./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa --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 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:03:42,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:03:42,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:03:42,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:03:42,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:03:42,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:03:42,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:03:42,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:03:42,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:03:42,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:03:42,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:03:42,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:03:42,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:03:42,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:03:42,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:03:42,400 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:03:42,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:03:42,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:03:42,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:03:42,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:03:42,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:03:42,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:03:42,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:03:42,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:03:42,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:03:42,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:03:42,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:03:42,423 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:03:42,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:03:42,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:03:42,425 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:03:42,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:03:42,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:03:42,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:03:42,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:03:42,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:03:42,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:03:42,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:03:42,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:03:42,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:03:42,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:03:42,430 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 17:03:42,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:03:42,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:03:42,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:03:42,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:03:42,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:03:42,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:03:42,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:03:42,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:03:42,449 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:03:42,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:03:42,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:03:42,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:03:42,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:03:42,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:03:42,452 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:03:42,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:03:42,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:03:42,452 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_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-12-06 17:03:42,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:03:42,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:03:42,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:03:42,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:03:42,648 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:03:42,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-06 17:03:42,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/data/88b7db679/3c21155115aa4c42bacf00bd02ee37f3/FLAGf814281e7 [2021-12-06 17:03:43,267 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:03:43,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-12-06 17:03:43,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/data/88b7db679/3c21155115aa4c42bacf00bd02ee37f3/FLAGf814281e7 [2021-12-06 17:03:43,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/data/88b7db679/3c21155115aa4c42bacf00bd02ee37f3 [2021-12-06 17:03:43,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:03:43,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:03:43,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:03:43,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:03:43,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:03:43,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:03:43" (1/1) ... [2021-12-06 17:03:43,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e827d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:43, skipping insertion in model container [2021-12-06 17:03:43,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:03:43" (1/1) ... [2021-12-06 17:03:43,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:03:43,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:03:43,975 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-12-06 17:03:43,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-12-06 17:03:44,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,676 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,677 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,678 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,679 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,680 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,681 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:44,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 17:03:44,965 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 17:03:44,966 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 17:03:44,967 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 17:03:44,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 17:03:44,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 17:03:44,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 17:03:44,969 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 17:03:44,970 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 17:03:44,970 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 17:03:45,083 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 17:03:45,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,159 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,162 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:03:45,198 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:03:45,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-12-06 17:03:45,209 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-12-06 17:03:45,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,234 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,240 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 17:03:45,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 17:03:45,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 17:03:45,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 17:03:45,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 17:03:45,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 17:03:45,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 17:03:45,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 17:03:45,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 17:03:45,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 17:03:45,300 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 17:03:45,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,317 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,340 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,343 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,350 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,351 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,351 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:03:45,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:03:45,503 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:03:45,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45 WrapperNode [2021-12-06 17:03:45,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:03:45,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:03:45,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:03:45,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:03:45,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,647 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 919 [2021-12-06 17:03:45,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:03:45,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:03:45,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:03:45,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:03:45,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:03:45,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:03:45,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:03:45,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:03:45,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (1/1) ... [2021-12-06 17:03:45,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:03:45,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:45,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:03:45,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:03:45,795 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2021-12-06 17:03:45,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2021-12-06 17:03:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-12-06 17:03:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-12-06 17:03:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-12-06 17:03:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-12-06 17:03:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:03:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-12-06 17:03:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-12-06 17:03:45,796 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-12-06 17:03:45,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-12-06 17:03:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 17:03:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 17:03:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-12-06 17:03:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-12-06 17:03:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:03:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-06 17:03:45,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-06 17:03:45,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:03:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:03:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:03:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:03:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:03:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-12-06 17:03:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-12-06 17:03:45,798 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-06 17:03:45,798 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-06 17:03:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:03:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:03:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 17:03:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 17:03:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-06 17:03:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-06 17:03:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-06 17:03:45,799 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-06 17:03:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-12-06 17:03:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-12-06 17:03:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:03:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-06 17:03:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:03:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-12-06 17:03:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 17:03:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-06 17:03:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-12-06 17:03:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-12-06 17:03:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 17:03:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-12-06 17:03:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 17:03:45,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 17:03:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:03:46,028 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:03:46,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:03:46,816 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:03:46,825 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:03:46,825 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-06 17:03:46,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:03:46 BoogieIcfgContainer [2021-12-06 17:03:46,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:03:46,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:03:46,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:03:46,831 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:03:46,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:03:43" (1/3) ... [2021-12-06 17:03:46,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a70b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:03:46, skipping insertion in model container [2021-12-06 17:03:46,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:03:45" (2/3) ... [2021-12-06 17:03:46,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a70b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:03:46, skipping insertion in model container [2021-12-06 17:03:46,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:03:46" (3/3) ... [2021-12-06 17:03:46,833 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-12-06 17:03:46,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:03:46,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 17:03:46,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:03:46,882 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:03:46,882 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 17:03:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2021-12-06 17:03:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:03:46,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:46,921 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:46,922 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1703596242, now seen corresponding path program 1 times [2021-12-06 17:03:46,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:46,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849354863] [2021-12-06 17:03:46,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:46,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:03:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:03:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:03:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:03:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:03:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:03:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:03:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 17:03:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:03:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:03:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:03:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 17:03:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-06 17:03:47,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:47,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849354863] [2021-12-06 17:03:47,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849354863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:47,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:47,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:03:47,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571980515] [2021-12-06 17:03:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:47,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:03:47,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:47,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:03:47,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:03:47,509 INFO L87 Difference]: Start difference. First operand has 358 states, 218 states have (on average 1.2660550458715596) internal successors, (276), 221 states have internal predecessors, (276), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:03:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:48,305 INFO L93 Difference]: Finished difference Result 821 states and 1341 transitions. [2021-12-06 17:03:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:03:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-12-06 17:03:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:48,320 INFO L225 Difference]: With dead ends: 821 [2021-12-06 17:03:48,320 INFO L226 Difference]: Without dead ends: 469 [2021-12-06 17:03:48,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:03:48,331 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 267 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:48,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 623 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:03:48,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2021-12-06 17:03:48,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 351. [2021-12-06 17:03:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 213 states have (on average 1.2300469483568075) internal successors, (262), 215 states have internal predecessors, (262), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-06 17:03:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 486 transitions. [2021-12-06 17:03:48,405 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 486 transitions. Word has length 103 [2021-12-06 17:03:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:48,405 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 486 transitions. [2021-12-06 17:03:48,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:03:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 486 transitions. [2021-12-06 17:03:48,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:03:48,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:48,409 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:48,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:03:48,410 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:48,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:48,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1175202252, now seen corresponding path program 1 times [2021-12-06 17:03:48,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:48,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068870256] [2021-12-06 17:03:48,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:48,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:03:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:03:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:03:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:03:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:03:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:03:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:03:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 17:03:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:03:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:03:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:03:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 17:03:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-06 17:03:48,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068870256] [2021-12-06 17:03:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068870256] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:03:48,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033604101] [2021-12-06 17:03:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:48,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:48,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:48,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:03:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:48,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:03:48,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 17:03:49,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:49,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033604101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:49,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:03:49,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 17:03:49,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451493577] [2021-12-06 17:03:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:49,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:03:49,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:03:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:03:49,091 INFO L87 Difference]: Start difference. First operand 351 states and 486 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:03:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:49,114 INFO L93 Difference]: Finished difference Result 437 states and 596 transitions. [2021-12-06 17:03:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:03:49,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-12-06 17:03:49,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:49,118 INFO L225 Difference]: With dead ends: 437 [2021-12-06 17:03:49,118 INFO L226 Difference]: Without dead ends: 352 [2021-12-06 17:03:49,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:03:49,120 INFO L933 BasicCegarLoop]: 485 mSDtfsCounter, 0 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:49,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:03:49,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-06 17:03:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2021-12-06 17:03:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 214 states have (on average 1.2289719626168225) internal successors, (263), 216 states have internal predecessors, (263), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-12-06 17:03:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 487 transitions. [2021-12-06 17:03:49,147 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 487 transitions. Word has length 103 [2021-12-06 17:03:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:49,148 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 487 transitions. [2021-12-06 17:03:49,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 17:03:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 487 transitions. [2021-12-06 17:03:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 17:03:49,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:49,151 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 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] [2021-12-06 17:03:49,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:03:49,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:49,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:49,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -99696786, now seen corresponding path program 1 times [2021-12-06 17:03:49,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:49,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828100550] [2021-12-06 17:03:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:49,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:03:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:03:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:03:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:03:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:49,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:03:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:03:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 17:03:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 17:03:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 17:03:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:03:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 17:03:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 17:03:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 17:03:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 17:03:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 17:03:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-06 17:03:49,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:49,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828100550] [2021-12-06 17:03:49,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828100550] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:03:49,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987176218] [2021-12-06 17:03:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:49,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:49,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:49,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:03:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:49,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2271 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:03:49,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-06 17:03:50,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:50,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987176218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:50,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:03:50,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-06 17:03:50,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220997641] [2021-12-06 17:03:50,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:50,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:03:50,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:50,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:03:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:03:50,135 INFO L87 Difference]: Start difference. First operand 352 states and 487 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 17:03:50,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:50,321 INFO L93 Difference]: Finished difference Result 670 states and 938 transitions. [2021-12-06 17:03:50,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:03:50,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2021-12-06 17:03:50,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:50,326 INFO L225 Difference]: With dead ends: 670 [2021-12-06 17:03:50,326 INFO L226 Difference]: Without dead ends: 354 [2021-12-06 17:03:50,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:03:50,330 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 504 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:50,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1717 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:03:50,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-06 17:03:50,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2021-12-06 17:03:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 215 states have (on average 1.2279069767441861) internal successors, (264), 218 states have internal predecessors, (264), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2021-12-06 17:03:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 496 transitions. [2021-12-06 17:03:50,364 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 496 transitions. Word has length 124 [2021-12-06 17:03:50,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:50,365 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 496 transitions. [2021-12-06 17:03:50,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-06 17:03:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 496 transitions. [2021-12-06 17:03:50,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 17:03:50,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:50,368 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:50,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:03:50,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-06 17:03:50,570 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:50,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:50,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2138740587, now seen corresponding path program 1 times [2021-12-06 17:03:50,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:50,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76698356] [2021-12-06 17:03:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:50,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:03:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:03:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:03:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:03:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 17:03:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 17:03:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:03:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:03:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:03:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 17:03:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 17:03:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:03:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 17:03:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 17:03:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 17:03:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 17:03:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 17:03:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 17:03:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-06 17:03:50,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76698356] [2021-12-06 17:03:50,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76698356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:03:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006851942] [2021-12-06 17:03:50,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:50,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:50,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:50,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:03:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:51,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2321 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:03:51,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-06 17:03:51,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:51,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006851942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:51,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:03:51,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-06 17:03:51,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831400699] [2021-12-06 17:03:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:51,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:03:51,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:03:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:03:51,333 INFO L87 Difference]: Start difference. First operand 354 states and 496 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 17:03:51,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:51,532 INFO L93 Difference]: Finished difference Result 693 states and 993 transitions. [2021-12-06 17:03:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:03:51,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 132 [2021-12-06 17:03:51,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:51,536 INFO L225 Difference]: With dead ends: 693 [2021-12-06 17:03:51,536 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 17:03:51,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:03:51,539 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 96 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:51,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 2601 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:03:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 17:03:51,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2021-12-06 17:03:51,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-06 17:03:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-06 17:03:51,559 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 132 [2021-12-06 17:03:51,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:51,560 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-06 17:03:51,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-06 17:03:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-06 17:03:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 17:03:51,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:51,562 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:51,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:03:51,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:51,764 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:51,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1048395964, now seen corresponding path program 1 times [2021-12-06 17:03:51,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:51,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062408503] [2021-12-06 17:03:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:51,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:51,918 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:51,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751609917] [2021-12-06 17:03:51,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:51,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:51,920 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:51,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:03:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:52,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:03:52,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-06 17:03:52,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:52,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062408503] [2021-12-06 17:03:52,352 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:52,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751609917] [2021-12-06 17:03:52,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751609917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:52,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:52,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:03:52,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683416873] [2021-12-06 17:03:52,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:52,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:03:52,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:52,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:03:52,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:03:52,354 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 17:03:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:52,521 INFO L93 Difference]: Finished difference Result 718 states and 1050 transitions. [2021-12-06 17:03:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:03:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 147 [2021-12-06 17:03:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:52,525 INFO L225 Difference]: With dead ends: 718 [2021-12-06 17:03:52,525 INFO L226 Difference]: Without dead ends: 381 [2021-12-06 17:03:52,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:03:52,527 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 528 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:52,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2112 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:03:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-06 17:03:52,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-12-06 17:03:52,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-06 17:03:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-06 17:03:52,547 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 147 [2021-12-06 17:03:52,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:52,547 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-06 17:03:52,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 17:03:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-06 17:03:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 17:03:52,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:52,550 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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] [2021-12-06 17:03:52,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:03:52,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:52,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:52,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1514523470, now seen corresponding path program 1 times [2021-12-06 17:03:52,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804335566] [2021-12-06 17:03:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:52,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:52,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:52,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878538183] [2021-12-06 17:03:52,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:52,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:52,797 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:52,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:03:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:53,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:03:53,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 17:03:53,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:53,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:53,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804335566] [2021-12-06 17:03:53,221 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:53,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878538183] [2021-12-06 17:03:53,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878538183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:53,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:53,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:03:53,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569264981] [2021-12-06 17:03:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:53,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:03:53,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:03:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:03:53,223 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-06 17:03:53,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:53,482 INFO L93 Difference]: Finished difference Result 744 states and 1088 transitions. [2021-12-06 17:03:53,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:03:53,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 163 [2021-12-06 17:03:53,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:53,487 INFO L225 Difference]: With dead ends: 744 [2021-12-06 17:03:53,487 INFO L226 Difference]: Without dead ends: 407 [2021-12-06 17:03:53,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:03:53,490 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 117 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:53,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2993 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:03:53,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-06 17:03:53,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 373. [2021-12-06 17:03:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 231 states have (on average 1.2380952380952381) internal successors, (286), 234 states have internal predecessors, (286), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-12-06 17:03:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2021-12-06 17:03:53,513 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 163 [2021-12-06 17:03:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:53,514 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2021-12-06 17:03:53,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 5 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2021-12-06 17:03:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2021-12-06 17:03:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 17:03:53,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:53,517 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:53,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:03:53,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:03:53,718 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:53,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1136730081, now seen corresponding path program 1 times [2021-12-06 17:03:53,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:53,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734795681] [2021-12-06 17:03:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:53,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:53,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:53,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991156030] [2021-12-06 17:03:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:53,771 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:53,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:53,772 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:53,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:03:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:54,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:03:54,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-06 17:03:54,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:54,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734795681] [2021-12-06 17:03:54,209 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991156030] [2021-12-06 17:03:54,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991156030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:54,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:54,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:03:54,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173416500] [2021-12-06 17:03:54,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:54,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:03:54,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:54,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:03:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:03:54,211 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 17:03:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:54,422 INFO L93 Difference]: Finished difference Result 683 states and 991 transitions. [2021-12-06 17:03:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:03:54,422 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 178 [2021-12-06 17:03:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:54,425 INFO L225 Difference]: With dead ends: 683 [2021-12-06 17:03:54,425 INFO L226 Difference]: Without dead ends: 375 [2021-12-06 17:03:54,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:03:54,427 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 545 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:54,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 2448 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:03:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-06 17:03:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-06 17:03:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 232 states have (on average 1.2370689655172413) internal successors, (287), 236 states have internal predecessors, (287), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-06 17:03:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 540 transitions. [2021-12-06 17:03:54,444 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 540 transitions. Word has length 178 [2021-12-06 17:03:54,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:54,445 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 540 transitions. [2021-12-06 17:03:54,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 17:03:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 540 transitions. [2021-12-06 17:03:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-06 17:03:54,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:54,447 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:54,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:03:54,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:54,648 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:54,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:54,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1083469799, now seen corresponding path program 1 times [2021-12-06 17:03:54,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:54,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221995579] [2021-12-06 17:03:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:54,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:54,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:54,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068933066] [2021-12-06 17:03:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:54,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:54,718 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:54,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:03:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:03:55,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-12-06 17:03:55,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:55,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:55,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221995579] [2021-12-06 17:03:55,288 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:55,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068933066] [2021-12-06 17:03:55,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068933066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:55,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:55,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:03:55,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796300460] [2021-12-06 17:03:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:55,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:03:55,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:03:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:03:55,290 INFO L87 Difference]: Start difference. First operand 375 states and 540 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:03:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:55,571 INFO L93 Difference]: Finished difference Result 688 states and 1006 transitions. [2021-12-06 17:03:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:03:55,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 201 [2021-12-06 17:03:55,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:55,574 INFO L225 Difference]: With dead ends: 688 [2021-12-06 17:03:55,574 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 17:03:55,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:03:55,577 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 569 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:55,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 2814 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:03:55,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 17:03:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-12-06 17:03:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 233 states have (on average 1.2360515021459229) internal successors, (288), 237 states have internal predecessors, (288), 115 states have call successors, (115), 24 states have call predecessors, (115), 26 states have return successors, (138), 114 states have call predecessors, (138), 113 states have call successors, (138) [2021-12-06 17:03:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 541 transitions. [2021-12-06 17:03:55,593 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 541 transitions. Word has length 201 [2021-12-06 17:03:55,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:55,593 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 541 transitions. [2021-12-06 17:03:55,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 5 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-12-06 17:03:55,594 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 541 transitions. [2021-12-06 17:03:55,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-06 17:03:55,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:55,596 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:55,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:03:55,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:55,798 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:55,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2112387732, now seen corresponding path program 2 times [2021-12-06 17:03:55,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:55,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264767955] [2021-12-06 17:03:55,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:55,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:55,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:55,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1035486848] [2021-12-06 17:03:55,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:03:55,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:55,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:55,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:55,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:03:56,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:03:56,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:03:56,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:03:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-12-06 17:03:56,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:56,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:56,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264767955] [2021-12-06 17:03:56,919 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:56,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035486848] [2021-12-06 17:03:56,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035486848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:56,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:56,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:03:56,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297060548] [2021-12-06 17:03:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:56,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:03:56,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:03:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:03:56,920 INFO L87 Difference]: Start difference. First operand 376 states and 541 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 17:03:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:57,213 INFO L93 Difference]: Finished difference Result 680 states and 990 transitions. [2021-12-06 17:03:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:03:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 232 [2021-12-06 17:03:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:57,216 INFO L225 Difference]: With dead ends: 680 [2021-12-06 17:03:57,216 INFO L226 Difference]: Without dead ends: 378 [2021-12-06 17:03:57,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:03:57,218 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 585 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:57,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 3171 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:03:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-12-06 17:03:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2021-12-06 17:03:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 234 states have (on average 1.235042735042735) internal successors, (289), 239 states have internal predecessors, (289), 115 states have call successors, (115), 24 states have call predecessors, (115), 27 states have return successors, (142), 114 states have call predecessors, (142), 113 states have call successors, (142) [2021-12-06 17:03:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 546 transitions. [2021-12-06 17:03:57,238 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 546 transitions. Word has length 232 [2021-12-06 17:03:57,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:57,238 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 546 transitions. [2021-12-06 17:03:57,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2021-12-06 17:03:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 546 transitions. [2021-12-06 17:03:57,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-12-06 17:03:57,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:57,241 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 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, 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] [2021-12-06 17:03:57,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:03:57,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:57,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:57,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash -352400544, now seen corresponding path program 1 times [2021-12-06 17:03:57,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:57,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464414198] [2021-12-06 17:03:57,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:57,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:57,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283614877] [2021-12-06 17:03:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:57,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:57,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:57,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:03:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:03:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2897 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:03:57,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 169 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-06 17:03:58,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:03:58,281 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 25 proven. 23 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-06 17:03:58,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:58,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464414198] [2021-12-06 17:03:58,281 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:58,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283614877] [2021-12-06 17:03:58,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283614877] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:03:58,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:03:58,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-06 17:03:58,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819287940] [2021-12-06 17:03:58,282 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:03:58,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:03:58,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:58,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:03:58,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:03:58,283 INFO L87 Difference]: Start difference. First operand 378 states and 546 transitions. Second operand has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) [2021-12-06 17:03:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:58,504 INFO L93 Difference]: Finished difference Result 710 states and 1045 transitions. [2021-12-06 17:03:58,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:03:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) Word has length 218 [2021-12-06 17:03:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:58,508 INFO L225 Difference]: With dead ends: 710 [2021-12-06 17:03:58,508 INFO L226 Difference]: Without dead ends: 397 [2021-12-06 17:03:58,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:03:58,510 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 174 mSDsluCounter, 3902 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 4367 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:58,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 4367 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:03:58,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-06 17:03:58,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 391. [2021-12-06 17:03:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2439024390243902) internal successors, (306), 250 states have internal predecessors, (306), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-06 17:03:58,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 565 transitions. [2021-12-06 17:03:58,526 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 565 transitions. Word has length 218 [2021-12-06 17:03:58,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:58,527 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 565 transitions. [2021-12-06 17:03:58,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.75) internal successors, (117), 12 states have internal predecessors, (117), 9 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (40), 5 states have call predecessors, (40), 9 states have call successors, (40) [2021-12-06 17:03:58,527 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 565 transitions. [2021-12-06 17:03:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 17:03:58,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:58,529 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:58,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:03:58,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:58,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:58,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:58,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1261405169, now seen corresponding path program 2 times [2021-12-06 17:03:58,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707248459] [2021-12-06 17:03:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:58,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:58,836 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:58,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051729110] [2021-12-06 17:03:58,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:03:58,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:58,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:58,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:58,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:03:59,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 17:03:59,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:03:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:03:59,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:03:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-12-06 17:03:59,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:03:59,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:03:59,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707248459] [2021-12-06 17:03:59,221 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:03:59,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051729110] [2021-12-06 17:03:59,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051729110] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:03:59,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:03:59,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:03:59,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676762259] [2021-12-06 17:03:59,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:03:59,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:03:59,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:03:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:03:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:03:59,222 INFO L87 Difference]: Start difference. First operand 391 states and 565 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-06 17:03:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:03:59,317 INFO L93 Difference]: Finished difference Result 711 states and 1047 transitions. [2021-12-06 17:03:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:03:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) Word has length 233 [2021-12-06 17:03:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:03:59,320 INFO L225 Difference]: With dead ends: 711 [2021-12-06 17:03:59,321 INFO L226 Difference]: Without dead ends: 394 [2021-12-06 17:03:59,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:03:59,322 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 74 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:03:59,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 2332 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:03:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-12-06 17:03:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 391. [2021-12-06 17:03:59,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2398373983739837) internal successors, (305), 250 states have internal predecessors, (305), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-06 17:03:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 564 transitions. [2021-12-06 17:03:59,338 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 564 transitions. Word has length 233 [2021-12-06 17:03:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:03:59,339 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 564 transitions. [2021-12-06 17:03:59,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-06 17:03:59,339 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 564 transitions. [2021-12-06 17:03:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-06 17:03:59,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:03:59,341 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:03:59,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 17:03:59,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:59,542 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:03:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:03:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash 688347363, now seen corresponding path program 3 times [2021-12-06 17:03:59,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:03:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909996392] [2021-12-06 17:03:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:03:59,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:03:59,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:03:59,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059615406] [2021-12-06 17:03:59,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:03:59,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:03:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:03:59,623 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:03:59,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:03:59,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-06 17:03:59,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:03:59,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:03:59,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-06 17:04:00,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:00,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:00,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909996392] [2021-12-06 17:04:00,080 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:00,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059615406] [2021-12-06 17:04:00,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059615406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:00,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:00,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:04:00,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292838826] [2021-12-06 17:04:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:00,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:04:00,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:04:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:00,082 INFO L87 Difference]: Start difference. First operand 391 states and 564 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 17:04:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:00,165 INFO L93 Difference]: Finished difference Result 708 states and 1037 transitions. [2021-12-06 17:04:00,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:04:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 263 [2021-12-06 17:04:00,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:00,170 INFO L225 Difference]: With dead ends: 708 [2021-12-06 17:04:00,170 INFO L226 Difference]: Without dead ends: 391 [2021-12-06 17:04:00,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:04:00,173 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 44 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:00,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1783 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:04:00,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-06 17:04:00,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-12-06 17:04:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2357723577235773) internal successors, (304), 250 states have internal predecessors, (304), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (143), 116 states have call predecessors, (143), 114 states have call successors, (143) [2021-12-06 17:04:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 563 transitions. [2021-12-06 17:04:00,196 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 563 transitions. Word has length 263 [2021-12-06 17:04:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:00,196 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 563 transitions. [2021-12-06 17:04:00,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 17:04:00,196 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 563 transitions. [2021-12-06 17:04:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-12-06 17:04:00,198 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:00,198 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:00,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:04:00,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 17:04:00,399 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:00,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:00,400 INFO L85 PathProgramCache]: Analyzing trace with hash 473503328, now seen corresponding path program 1 times [2021-12-06 17:04:00,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:00,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377745425] [2021-12-06 17:04:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:00,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:00,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:00,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077365245] [2021-12-06 17:04:00,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:00,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:00,484 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:00,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:04:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 3120 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:04:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-12-06 17:04:01,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:01,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:01,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377745425] [2021-12-06 17:04:01,013 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:01,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077365245] [2021-12-06 17:04:01,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077365245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:01,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:01,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:04:01,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280205901] [2021-12-06 17:04:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:01,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:04:01,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:04:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:04:01,015 INFO L87 Difference]: Start difference. First operand 391 states and 563 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 17:04:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:01,243 INFO L93 Difference]: Finished difference Result 677 states and 977 transitions. [2021-12-06 17:04:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:04:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) Word has length 248 [2021-12-06 17:04:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:01,247 INFO L225 Difference]: With dead ends: 677 [2021-12-06 17:04:01,247 INFO L226 Difference]: Without dead ends: 396 [2021-12-06 17:04:01,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:04:01,249 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 565 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2857 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:01,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2857 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:01,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-06 17:04:01,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2021-12-06 17:04:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2357723577235773) internal successors, (304), 250 states have internal predecessors, (304), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (141), 116 states have call predecessors, (141), 114 states have call successors, (141) [2021-12-06 17:04:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 561 transitions. [2021-12-06 17:04:01,265 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 561 transitions. Word has length 248 [2021-12-06 17:04:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:01,266 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 561 transitions. [2021-12-06 17:04:01,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 17:04:01,266 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 561 transitions. [2021-12-06 17:04:01,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-12-06 17:04:01,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:01,268 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:01,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 17:04:01,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:01,469 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -817196209, now seen corresponding path program 1 times [2021-12-06 17:04:01,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:01,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372924813] [2021-12-06 17:04:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:01,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:01,553 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:01,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777683914] [2021-12-06 17:04:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:01,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:01,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:01,554 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:01,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:04:01,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:01,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 3242 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:04:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 210 proven. 3 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2021-12-06 17:04:02,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:04:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2021-12-06 17:04:02,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:02,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372924813] [2021-12-06 17:04:02,487 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:02,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777683914] [2021-12-06 17:04:02,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777683914] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:04:02,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:04:02,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-12-06 17:04:02,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812690476] [2021-12-06 17:04:02,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:04:02,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:04:02,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:02,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:04:02,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:04:02,489 INFO L87 Difference]: Start difference. First operand 391 states and 561 transitions. Second operand has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) [2021-12-06 17:04:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:02,730 INFO L93 Difference]: Finished difference Result 677 states and 974 transitions. [2021-12-06 17:04:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:04:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) Word has length 272 [2021-12-06 17:04:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:02,733 INFO L225 Difference]: With dead ends: 677 [2021-12-06 17:04:02,733 INFO L226 Difference]: Without dead ends: 396 [2021-12-06 17:04:02,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:04:02,735 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 245 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 4206 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:02,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 4206 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:02,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-06 17:04:02,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 391. [2021-12-06 17:04:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 246 states have (on average 1.2357723577235773) internal successors, (304), 250 states have internal predecessors, (304), 116 states have call successors, (116), 24 states have call predecessors, (116), 27 states have return successors, (139), 116 states have call predecessors, (139), 114 states have call successors, (139) [2021-12-06 17:04:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 559 transitions. [2021-12-06 17:04:02,750 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 559 transitions. Word has length 272 [2021-12-06 17:04:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:02,751 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 559 transitions. [2021-12-06 17:04:02,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 8.214285714285714) internal successors, (115), 14 states have internal predecessors, (115), 11 states have call successors, (49), 4 states have call predecessors, (49), 4 states have return successors, (45), 7 states have call predecessors, (45), 11 states have call successors, (45) [2021-12-06 17:04:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 559 transitions. [2021-12-06 17:04:02,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-12-06 17:04:02,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:02,760 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:04:02,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-06 17:04:02,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:04:02,961 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:02,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1306212493, now seen corresponding path program 2 times [2021-12-06 17:04:02,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:02,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647648454] [2021-12-06 17:04:02,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:02,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:03,044 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:03,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844814668] [2021-12-06 17:04:03,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:04:03,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:03,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:03,046 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:03,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:04:03,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:04:03,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:04:03,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 3524 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:04:03,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-12-06 17:04:03,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:03,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:03,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647648454] [2021-12-06 17:04:03,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:03,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844814668] [2021-12-06 17:04:03,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844814668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:03,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:04:03,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642116730] [2021-12-06 17:04:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:03,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:04:03,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:04:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:04:03,914 INFO L87 Difference]: Start difference. First operand 391 states and 559 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 17:04:04,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:04,221 INFO L93 Difference]: Finished difference Result 684 states and 983 transitions. [2021-12-06 17:04:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:04:04,221 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) Word has length 302 [2021-12-06 17:04:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:04,224 INFO L225 Difference]: With dead ends: 684 [2021-12-06 17:04:04,224 INFO L226 Difference]: Without dead ends: 408 [2021-12-06 17:04:04,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:04:04,225 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 573 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:04,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [593 Valid, 3653 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-06 17:04:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 403. [2021-12-06 17:04:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 252 states have (on average 1.2341269841269842) internal successors, (311), 256 states have internal predecessors, (311), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (144), 121 states have call predecessors, (144), 119 states have call successors, (144) [2021-12-06 17:04:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 576 transitions. [2021-12-06 17:04:04,240 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 576 transitions. Word has length 302 [2021-12-06 17:04:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:04,241 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 576 transitions. [2021-12-06 17:04:04,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 6 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 6 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 17:04:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 576 transitions. [2021-12-06 17:04:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-06 17:04:04,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:04,243 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:04,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:04:04,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:04:04,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 954978234, now seen corresponding path program 1 times [2021-12-06 17:04:04,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272292365] [2021-12-06 17:04:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:04,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:04,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752795304] [2021-12-06 17:04:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:04,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:04,494 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 17:04:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:04,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 3887 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:04:04,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2021-12-06 17:04:05,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:05,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:05,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272292365] [2021-12-06 17:04:05,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:05,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752795304] [2021-12-06 17:04:05,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752795304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:05,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:05,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:04:05,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861008685] [2021-12-06 17:04:05,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:05,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:04:05,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:05,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:04:05,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:04:05,248 INFO L87 Difference]: Start difference. First operand 403 states and 576 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 17:04:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:05,524 INFO L93 Difference]: Finished difference Result 824 states and 1222 transitions. [2021-12-06 17:04:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:04:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 340 [2021-12-06 17:04:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:05,528 INFO L225 Difference]: With dead ends: 824 [2021-12-06 17:04:05,528 INFO L226 Difference]: Without dead ends: 457 [2021-12-06 17:04:05,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:04:05,531 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 21 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:05,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2245 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-06 17:04:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 415. [2021-12-06 17:04:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 264 states have (on average 1.2348484848484849) internal successors, (326), 268 states have internal predecessors, (326), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (144), 121 states have call predecessors, (144), 119 states have call successors, (144) [2021-12-06 17:04:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 591 transitions. [2021-12-06 17:04:05,550 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 591 transitions. Word has length 340 [2021-12-06 17:04:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:05,550 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 591 transitions. [2021-12-06 17:04:05,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 17:04:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 591 transitions. [2021-12-06 17:04:05,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-06 17:04:05,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:05,553 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:05,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 17:04:05,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 17:04:05,754 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash 69797058, now seen corresponding path program 1 times [2021-12-06 17:04:05,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:05,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060005262] [2021-12-06 17:04:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:05,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:05,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343576055] [2021-12-06 17:04:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:05,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:05,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:05,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 17:04:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:06,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3875 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:04:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-06 17:04:06,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:06,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:06,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060005262] [2021-12-06 17:04:06,459 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:06,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343576055] [2021-12-06 17:04:06,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343576055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:06,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:06,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:04:06,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863052796] [2021-12-06 17:04:06,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:06,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:04:06,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:06,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:04:06,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:04:06,460 INFO L87 Difference]: Start difference. First operand 415 states and 591 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 17:04:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:06,486 INFO L93 Difference]: Finished difference Result 806 states and 1176 transitions. [2021-12-06 17:04:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:04:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 340 [2021-12-06 17:04:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:06,489 INFO L225 Difference]: With dead ends: 806 [2021-12-06 17:04:06,489 INFO L226 Difference]: Without dead ends: 427 [2021-12-06 17:04:06,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:06,491 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 3 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1441 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 [2021-12-06 17:04:06,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1441 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:06,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-12-06 17:04:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 421. [2021-12-06 17:04:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 270 states have (on average 1.2296296296296296) internal successors, (332), 274 states have internal predecessors, (332), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (144), 121 states have call predecessors, (144), 119 states have call successors, (144) [2021-12-06 17:04:06,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 597 transitions. [2021-12-06 17:04:06,507 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 597 transitions. Word has length 340 [2021-12-06 17:04:06,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:06,507 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 597 transitions. [2021-12-06 17:04:06,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-06 17:04:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 597 transitions. [2021-12-06 17:04:06,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-12-06 17:04:06,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:06,510 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:06,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 17:04:06,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:06,711 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash 901758371, now seen corresponding path program 1 times [2021-12-06 17:04:06,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:06,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357362446] [2021-12-06 17:04:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:06,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:06,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:06,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158607502] [2021-12-06 17:04:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:06,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:06,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:06,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 17:04:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:07,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 3432 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:04:07,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2021-12-06 17:04:07,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:07,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357362446] [2021-12-06 17:04:07,392 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158607502] [2021-12-06 17:04:07,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158607502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:07,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:07,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:04:07,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609051559] [2021-12-06 17:04:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:07,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:04:07,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:07,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:04:07,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:04:07,394 INFO L87 Difference]: Start difference. First operand 421 states and 597 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:04:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:07,635 INFO L93 Difference]: Finished difference Result 799 states and 1142 transitions. [2021-12-06 17:04:07,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:04:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) Word has length 295 [2021-12-06 17:04:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:07,638 INFO L225 Difference]: With dead ends: 799 [2021-12-06 17:04:07,638 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 17:04:07,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:04:07,640 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 178 mSDsluCounter, 3312 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 3753 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:07,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 3753 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 17:04:07,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 421. [2021-12-06 17:04:07,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 270 states have (on average 1.2296296296296296) internal successors, (332), 274 states have internal predecessors, (332), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (142), 121 states have call predecessors, (142), 119 states have call successors, (142) [2021-12-06 17:04:07,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 595 transitions. [2021-12-06 17:04:07,655 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 595 transitions. Word has length 295 [2021-12-06 17:04:07,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:07,655 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 595 transitions. [2021-12-06 17:04:07,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 6 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (27), 5 states have call predecessors, (27), 6 states have call successors, (27) [2021-12-06 17:04:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 595 transitions. [2021-12-06 17:04:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-12-06 17:04:07,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:07,658 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:07,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 17:04:07,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 17:04:07,859 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 478629852, now seen corresponding path program 2 times [2021-12-06 17:04:07,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46538856] [2021-12-06 17:04:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:07,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:07,941 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:07,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548687154] [2021-12-06 17:04:07,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:04:07,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:07,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:07,942 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:07,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 17:04:08,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 17:04:08,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:04:08,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 17:04:08,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2021-12-06 17:04:08,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:08,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:08,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46538856] [2021-12-06 17:04:08,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:08,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548687154] [2021-12-06 17:04:08,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548687154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:08,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:08,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:04:08,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546361610] [2021-12-06 17:04:08,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:08,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:04:08,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:04:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:08,410 INFO L87 Difference]: Start difference. First operand 421 states and 595 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-06 17:04:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:08,443 INFO L93 Difference]: Finished difference Result 771 states and 1108 transitions. [2021-12-06 17:04:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:04:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) Word has length 310 [2021-12-06 17:04:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:08,447 INFO L225 Difference]: With dead ends: 771 [2021-12-06 17:04:08,447 INFO L226 Difference]: Without dead ends: 424 [2021-12-06 17:04:08,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:04:08,449 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 12 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:08,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1933 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-06 17:04:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 419. [2021-12-06 17:04:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 268 states have (on average 1.2238805970149254) internal successors, (328), 271 states have internal predecessors, (328), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (142), 122 states have call predecessors, (142), 119 states have call successors, (142) [2021-12-06 17:04:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 591 transitions. [2021-12-06 17:04:08,473 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 591 transitions. Word has length 310 [2021-12-06 17:04:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:08,473 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 591 transitions. [2021-12-06 17:04:08,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 1 states have call successors, (22) [2021-12-06 17:04:08,473 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 591 transitions. [2021-12-06 17:04:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-06 17:04:08,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:08,475 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:08,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-06 17:04:08,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:08,676 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash 431352706, now seen corresponding path program 1 times [2021-12-06 17:04:08,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:08,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022564537] [2021-12-06 17:04:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:08,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:08,717 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:08,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315593694] [2021-12-06 17:04:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:08,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:08,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:08,718 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:08,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 17:04:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:09,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 3301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:04:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-12-06 17:04:09,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:09,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:09,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022564537] [2021-12-06 17:04:09,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:09,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315593694] [2021-12-06 17:04:09,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315593694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:09,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:09,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:04:09,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364219283] [2021-12-06 17:04:09,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:09,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:04:09,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:09,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:04:09,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:04:09,259 INFO L87 Difference]: Start difference. First operand 419 states and 591 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:04:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:09,290 INFO L93 Difference]: Finished difference Result 804 states and 1161 transitions. [2021-12-06 17:04:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:04:09,290 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 280 [2021-12-06 17:04:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:09,293 INFO L225 Difference]: With dead ends: 804 [2021-12-06 17:04:09,293 INFO L226 Difference]: Without dead ends: 421 [2021-12-06 17:04:09,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:09,295 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 3 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1441 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 [2021-12-06 17:04:09,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1441 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-12-06 17:04:09,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2021-12-06 17:04:09,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 268 states have (on average 1.212686567164179) internal successors, (325), 271 states have internal predecessors, (325), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (142), 122 states have call predecessors, (142), 119 states have call successors, (142) [2021-12-06 17:04:09,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 588 transitions. [2021-12-06 17:04:09,310 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 588 transitions. Word has length 280 [2021-12-06 17:04:09,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:09,311 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 588 transitions. [2021-12-06 17:04:09,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 17:04:09,311 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 588 transitions. [2021-12-06 17:04:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-12-06 17:04:09,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:09,313 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:09,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 17:04:09,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:09,515 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:09,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash -641737782, now seen corresponding path program 1 times [2021-12-06 17:04:09,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:09,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744563299] [2021-12-06 17:04:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:09,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:09,602 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:09,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [588694250] [2021-12-06 17:04:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:09,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:09,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:09,603 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:09,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 17:04:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:10,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 3855 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:04:10,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2021-12-06 17:04:10,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:10,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744563299] [2021-12-06 17:04:10,301 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:10,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588694250] [2021-12-06 17:04:10,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588694250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:10,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:10,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:04:10,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737580189] [2021-12-06 17:04:10,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:10,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:04:10,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:10,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:04:10,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:04:10,302 INFO L87 Difference]: Start difference. First operand 419 states and 588 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 17:04:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:10,402 INFO L93 Difference]: Finished difference Result 778 states and 1105 transitions. [2021-12-06 17:04:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:04:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 340 [2021-12-06 17:04:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:10,406 INFO L225 Difference]: With dead ends: 778 [2021-12-06 17:04:10,406 INFO L226 Difference]: Without dead ends: 461 [2021-12-06 17:04:10,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:04:10,408 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 82 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:10,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 2532 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:04:10,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-06 17:04:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 422. [2021-12-06 17:04:10,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 271 states have (on average 1.2103321033210332) internal successors, (328), 274 states have internal predecessors, (328), 121 states have call successors, (121), 25 states have call predecessors, (121), 28 states have return successors, (142), 122 states have call predecessors, (142), 119 states have call successors, (142) [2021-12-06 17:04:10,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 591 transitions. [2021-12-06 17:04:10,425 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 591 transitions. Word has length 340 [2021-12-06 17:04:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:10,425 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 591 transitions. [2021-12-06 17:04:10,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-12-06 17:04:10,425 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 591 transitions. [2021-12-06 17:04:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-06 17:04:10,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:10,427 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:10,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 17:04:10,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 17:04:10,628 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 544058322, now seen corresponding path program 1 times [2021-12-06 17:04:10,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:10,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076813762] [2021-12-06 17:04:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:10,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:10,691 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:10,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736849409] [2021-12-06 17:04:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:10,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:10,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:10,692 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:10,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 17:04:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:11,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 3641 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:04:11,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 363 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-12-06 17:04:11,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:11,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:11,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076813762] [2021-12-06 17:04:11,382 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:11,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736849409] [2021-12-06 17:04:11,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736849409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:11,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:11,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:04:11,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284126764] [2021-12-06 17:04:11,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:11,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:04:11,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:11,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:04:11,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:04:11,383 INFO L87 Difference]: Start difference. First operand 422 states and 591 transitions. Second operand has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-06 17:04:11,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:11,701 INFO L93 Difference]: Finished difference Result 752 states and 1055 transitions. [2021-12-06 17:04:11,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:04:11,702 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) Word has length 317 [2021-12-06 17:04:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:11,704 INFO L225 Difference]: With dead ends: 752 [2021-12-06 17:04:11,705 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 17:04:11,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:04:11,707 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 197 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:11,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 4148 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:04:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 17:04:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 404. [2021-12-06 17:04:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 255 states have (on average 1.2117647058823529) internal successors, (309), 258 states have internal predecessors, (309), 120 states have call successors, (120), 25 states have call predecessors, (120), 27 states have return successors, (135), 120 states have call predecessors, (135), 118 states have call successors, (135) [2021-12-06 17:04:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 564 transitions. [2021-12-06 17:04:11,722 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 564 transitions. Word has length 317 [2021-12-06 17:04:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 564 transitions. [2021-12-06 17:04:11,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 7 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 6 states have call predecessors, (28), 7 states have call successors, (28) [2021-12-06 17:04:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 564 transitions. [2021-12-06 17:04:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-06 17:04:11,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:11,724 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:11,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 17:04:11,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 17:04:11,925 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2117085201, now seen corresponding path program 1 times [2021-12-06 17:04:11,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:11,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217268349] [2021-12-06 17:04:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:11,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:11,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:11,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400602633] [2021-12-06 17:04:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:11,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:11,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:12,000 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:12,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 17:04:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:12,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 17:04:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:12,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2021-12-06 17:04:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 357 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2021-12-06 17:04:12,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:12,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:12,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217268349] [2021-12-06 17:04:12,890 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:12,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400602633] [2021-12-06 17:04:12,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400602633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:12,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:12,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:04:12,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535979832] [2021-12-06 17:04:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:12,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:04:12,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:04:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:04:12,892 INFO L87 Difference]: Start difference. First operand 404 states and 564 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-06 17:04:13,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:13,278 INFO L93 Difference]: Finished difference Result 819 states and 1184 transitions. [2021-12-06 17:04:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:04:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) Word has length 332 [2021-12-06 17:04:13,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:13,281 INFO L225 Difference]: With dead ends: 819 [2021-12-06 17:04:13,281 INFO L226 Difference]: Without dead ends: 447 [2021-12-06 17:04:13,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:04:13,284 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 106 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:13,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 3468 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:04:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-06 17:04:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 423. [2021-12-06 17:04:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 273 states have (on average 1.2124542124542124) internal successors, (331), 275 states have internal predecessors, (331), 120 states have call successors, (120), 25 states have call predecessors, (120), 28 states have return successors, (148), 122 states have call predecessors, (148), 118 states have call successors, (148) [2021-12-06 17:04:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 599 transitions. [2021-12-06 17:04:13,300 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 599 transitions. Word has length 332 [2021-12-06 17:04:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:13,300 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 599 transitions. [2021-12-06 17:04:13,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 6 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 6 states have call predecessors, (29), 6 states have call successors, (29) [2021-12-06 17:04:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 599 transitions. [2021-12-06 17:04:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-06 17:04:13,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:13,302 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:13,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 17:04:13,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 17:04:13,503 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:13,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 368552399, now seen corresponding path program 1 times [2021-12-06 17:04:13,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:13,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544474456] [2021-12-06 17:04:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:13,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:13,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:13,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777281678] [2021-12-06 17:04:13,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:13,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:13,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:13,558 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:13,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 17:04:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 3775 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:04:13,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 467 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-12-06 17:04:14,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:14,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544474456] [2021-12-06 17:04:14,228 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:14,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777281678] [2021-12-06 17:04:14,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777281678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:14,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:14,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:04:14,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252948746] [2021-12-06 17:04:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:14,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:04:14,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:04:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:04:14,230 INFO L87 Difference]: Start difference. First operand 423 states and 599 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 17:04:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:14,259 INFO L93 Difference]: Finished difference Result 810 states and 1191 transitions. [2021-12-06 17:04:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:04:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 332 [2021-12-06 17:04:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:14,263 INFO L225 Difference]: With dead ends: 810 [2021-12-06 17:04:14,263 INFO L226 Difference]: Without dead ends: 423 [2021-12-06 17:04:14,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:14,266 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 7 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1447 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 [2021-12-06 17:04:14,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1447 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-06 17:04:14,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2021-12-06 17:04:14,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 273 states have (on average 1.2087912087912087) internal successors, (330), 275 states have internal predecessors, (330), 120 states have call successors, (120), 25 states have call predecessors, (120), 28 states have return successors, (148), 122 states have call predecessors, (148), 118 states have call successors, (148) [2021-12-06 17:04:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 598 transitions. [2021-12-06 17:04:14,281 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 598 transitions. Word has length 332 [2021-12-06 17:04:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:14,281 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 598 transitions. [2021-12-06 17:04:14,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-06 17:04:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 598 transitions. [2021-12-06 17:04:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-06 17:04:14,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:14,283 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:14,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 17:04:14,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 17:04:14,484 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash -201858609, now seen corresponding path program 1 times [2021-12-06 17:04:14,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:14,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862468551] [2021-12-06 17:04:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:14,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:14,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:14,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379594333] [2021-12-06 17:04:14,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:14,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:14,573 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:14,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 17:04:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:15,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 3791 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 17:04:15,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-12-06 17:04:15,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:15,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:15,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862468551] [2021-12-06 17:04:15,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:15,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379594333] [2021-12-06 17:04:15,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379594333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:15,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:15,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:04:15,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65116333] [2021-12-06 17:04:15,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:15,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:04:15,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:04:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:15,288 INFO L87 Difference]: Start difference. First operand 423 states and 598 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 17:04:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:15,321 INFO L93 Difference]: Finished difference Result 830 states and 1203 transitions. [2021-12-06 17:04:15,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:04:15,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 332 [2021-12-06 17:04:15,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:15,324 INFO L225 Difference]: With dead ends: 830 [2021-12-06 17:04:15,324 INFO L226 Difference]: Without dead ends: 443 [2021-12-06 17:04:15,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:04:15,331 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 9 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:15,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1962 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:04:15,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-06 17:04:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 431. [2021-12-06 17:04:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 281 states have (on average 1.2028469750889679) internal successors, (338), 283 states have internal predecessors, (338), 120 states have call successors, (120), 25 states have call predecessors, (120), 28 states have return successors, (148), 122 states have call predecessors, (148), 118 states have call successors, (148) [2021-12-06 17:04:15,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 606 transitions. [2021-12-06 17:04:15,347 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 606 transitions. Word has length 332 [2021-12-06 17:04:15,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:15,348 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 606 transitions. [2021-12-06 17:04:15,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 17:04:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 606 transitions. [2021-12-06 17:04:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-06 17:04:15,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:15,350 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:15,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 17:04:15,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:15,550 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1623540425, now seen corresponding path program 1 times [2021-12-06 17:04:15,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:15,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508796201] [2021-12-06 17:04:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:15,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:15,595 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:15,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281632258] [2021-12-06 17:04:15,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:15,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:15,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:15,596 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:15,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 17:04:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:16,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:04:16,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:16,304 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2021-12-06 17:04:16,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:04:16,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:04:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508796201] [2021-12-06 17:04:16,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:04:16,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281632258] [2021-12-06 17:04:16,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281632258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:04:16,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:04:16,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:04:16,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875492449] [2021-12-06 17:04:16,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:04:16,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:04:16,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:04:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:04:16,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:04:16,307 INFO L87 Difference]: Start difference. First operand 431 states and 606 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 17:04:16,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:04:16,504 INFO L93 Difference]: Finished difference Result 826 states and 1205 transitions. [2021-12-06 17:04:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:04:16,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 338 [2021-12-06 17:04:16,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:04:16,507 INFO L225 Difference]: With dead ends: 826 [2021-12-06 17:04:16,507 INFO L226 Difference]: Without dead ends: 431 [2021-12-06 17:04:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:04:16,510 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 7 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:04:16,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1860 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:04:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-12-06 17:04:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-12-06 17:04:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 281 states have (on average 1.199288256227758) internal successors, (337), 283 states have internal predecessors, (337), 120 states have call successors, (120), 25 states have call predecessors, (120), 28 states have return successors, (148), 122 states have call predecessors, (148), 118 states have call successors, (148) [2021-12-06 17:04:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 605 transitions. [2021-12-06 17:04:16,527 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 605 transitions. Word has length 338 [2021-12-06 17:04:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:04:16,527 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 605 transitions. [2021-12-06 17:04:16,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-06 17:04:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 605 transitions. [2021-12-06 17:04:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-12-06 17:04:16,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:04:16,529 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:04:16,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 17:04:16,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 17:04:16,731 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:04:16,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:04:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1177846795, now seen corresponding path program 1 times [2021-12-06 17:04:16,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:04:16,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029205016] [2021-12-06 17:04:16,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:16,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:04:16,826 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:04:16,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782914279] [2021-12-06 17:04:16,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:04:16,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:04:16,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:04:16,827 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:04:16,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 17:04:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:04:17,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3797 conjuncts, 200 conjunts are in the unsatisfiable core [2021-12-06 17:04:17,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:04:17,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:04:17,695 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 17:04:17,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:04:17,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:17,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:04:18,105 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 17:04:18,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:04:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:21,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:04:21,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:21,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:04:23,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:23,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:04:23,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:23,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:04:23,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:23,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 17:04:25,824 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4766 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4766))) (exists ((v_ArrVal_4768 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4768))) (exists ((v_ArrVal_4767 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_4767) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 17:04:26,498 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4769 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4769))) is different from true [2021-12-06 17:04:26,748 WARN L860 $PredicateComparison]: unable to prove that (and (not (= (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616) 0)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_4769 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_4769)))) is different from true [2021-12-06 17:04:28,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:28,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-12-06 17:04:28,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:28,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 17:04:28,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:04:28,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-06 17:04:28,823 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:04:28,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 17:04:28,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-12-06 17:05:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 833 backedges. 398 proven. 52 refuted. 0 times theorem prover too weak. 377 trivial. 6 not checked. [2021-12-06 17:05:33,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:05:35,332 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-06 17:05:35,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-06 17:05:35,338 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-06 17:05:35,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 17:05:35,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:35,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029205016] [2021-12-06 17:05:35,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:05:35,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782914279] [2021-12-06 17:05:35,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782914279] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:05:35,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:05:35,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2021-12-06 17:05:35,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117883394] [2021-12-06 17:05:35,442 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:05:35,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-06 17:05:35,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:35,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-06 17:05:35,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=3060, Unknown=55, NotChecked=342, Total=3660 [2021-12-06 17:05:35,444 INFO L87 Difference]: Start difference. First operand 431 states and 605 transitions. Second operand has 50 states, 46 states have (on average 3.0) internal successors, (138), 42 states have internal predecessors, (138), 15 states have call successors, (35), 11 states have call predecessors, (35), 14 states have return successors, (32), 13 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-06 17:05:53,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 17:05:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:55,293 INFO L93 Difference]: Finished difference Result 1074 states and 1628 transitions. [2021-12-06 17:05:55,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 17:05:55,294 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 46 states have (on average 3.0) internal successors, (138), 42 states have internal predecessors, (138), 15 states have call successors, (35), 11 states have call predecessors, (35), 14 states have return successors, (32), 13 states have call predecessors, (32), 15 states have call successors, (32) Word has length 338 [2021-12-06 17:05:55,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:55,300 INFO L225 Difference]: With dead ends: 1074 [2021-12-06 17:05:55,300 INFO L226 Difference]: Without dead ends: 705 [2021-12-06 17:05:55,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 508 SyntacticMatches, 12 SemanticMatches, 82 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1869 ImplicationChecksByTransitivity, 89.2s TimeCoverageRelationStatistics Valid=396, Invalid=6003, Unknown=93, NotChecked=480, Total=6972 [2021-12-06 17:05:55,306 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 412 mSDsluCounter, 8263 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 419 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 8785 SdHoareTripleChecker+Invalid, 17978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 11970 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:55,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 8785 Invalid, 17978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 5588 Invalid, 1 Unknown, 11970 Unchecked, 5.5s Time] [2021-12-06 17:05:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-12-06 17:05:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 498. [2021-12-06 17:05:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 332 states have (on average 1.1897590361445782) internal successors, (395), 336 states have internal predecessors, (395), 126 states have call successors, (126), 30 states have call predecessors, (126), 38 states have return successors, (199), 131 states have call predecessors, (199), 124 states have call successors, (199) [2021-12-06 17:05:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 720 transitions. [2021-12-06 17:05:55,336 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 720 transitions. Word has length 338 [2021-12-06 17:05:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:55,336 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 720 transitions. [2021-12-06 17:05:55,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 46 states have (on average 3.0) internal successors, (138), 42 states have internal predecessors, (138), 15 states have call successors, (35), 11 states have call predecessors, (35), 14 states have return successors, (32), 13 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-06 17:05:55,336 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 720 transitions. [2021-12-06 17:05:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-06 17:05:55,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:55,339 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:05:55,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 17:05:55,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 17:05:55,540 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:55,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:55,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1472667813, now seen corresponding path program 1 times [2021-12-06 17:05:55,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:55,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992332093] [2021-12-06 17:05:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:55,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:55,622 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:05:55,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [650161927] [2021-12-06 17:05:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:55,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:05:55,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:05:55,623 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:05:55,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 17:05:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:56,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 3810 conjuncts, 35 conjunts are in the unsatisfiable core [2021-12-06 17:05:56,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:05:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 427 proven. 1 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2021-12-06 17:05:56,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:05:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 87 proven. 20 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-12-06 17:05:57,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992332093] [2021-12-06 17:05:57,043 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:05:57,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650161927] [2021-12-06 17:05:57,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650161927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:05:57,043 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:05:57,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 19 [2021-12-06 17:05:57,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770253291] [2021-12-06 17:05:57,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:05:57,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 17:05:57,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:57,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 17:05:57,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:05:57,045 INFO L87 Difference]: Start difference. First operand 498 states and 720 transitions. Second operand has 19 states, 18 states have (on average 7.5) internal successors, (135), 12 states have internal predecessors, (135), 3 states have call successors, (37), 3 states have call predecessors, (37), 6 states have return successors, (38), 8 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-06 17:05:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:05:57,191 INFO L93 Difference]: Finished difference Result 971 states and 1438 transitions. [2021-12-06 17:05:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:05:57,192 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.5) internal successors, (135), 12 states have internal predecessors, (135), 3 states have call successors, (37), 3 states have call predecessors, (37), 6 states have return successors, (38), 8 states have call predecessors, (38), 2 states have call successors, (38) Word has length 352 [2021-12-06 17:05:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:05:57,195 INFO L225 Difference]: With dead ends: 971 [2021-12-06 17:05:57,195 INFO L226 Difference]: Without dead ends: 535 [2021-12-06 17:05:57,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 685 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:05:57,198 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 22 mSDsluCounter, 7454 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 7955 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:05:57,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 7955 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:05:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-12-06 17:05:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 511. [2021-12-06 17:05:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 344 states have (on average 1.188953488372093) internal successors, (409), 346 states have internal predecessors, (409), 126 states have call successors, (126), 30 states have call predecessors, (126), 39 states have return successors, (213), 134 states have call predecessors, (213), 124 states have call successors, (213) [2021-12-06 17:05:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 748 transitions. [2021-12-06 17:05:57,220 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 748 transitions. Word has length 352 [2021-12-06 17:05:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:05:57,220 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 748 transitions. [2021-12-06 17:05:57,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.5) internal successors, (135), 12 states have internal predecessors, (135), 3 states have call successors, (37), 3 states have call predecessors, (37), 6 states have return successors, (38), 8 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-06 17:05:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 748 transitions. [2021-12-06 17:05:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-12-06 17:05:57,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:05:57,223 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:05:57,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 17:05:57,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 17:05:57,423 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:05:57,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:05:57,424 INFO L85 PathProgramCache]: Analyzing trace with hash -617274466, now seen corresponding path program 1 times [2021-12-06 17:05:57,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:05:57,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816215785] [2021-12-06 17:05:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:57,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:05:57,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:05:57,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193294322] [2021-12-06 17:05:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:05:57,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:05:57,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:05:57,476 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:05:57,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 17:05:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:05:57,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 3859 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 17:05:57,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:05:58,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 17:05:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 234 proven. 23 refuted. 0 times theorem prover too weak. 599 trivial. 0 not checked. [2021-12-06 17:05:58,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:05:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 90 proven. 13 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2021-12-06 17:05:59,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:05:59,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816215785] [2021-12-06 17:05:59,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:05:59,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193294322] [2021-12-06 17:05:59,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193294322] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:05:59,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:05:59,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 26 [2021-12-06 17:05:59,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670025850] [2021-12-06 17:05:59,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:05:59,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 17:05:59,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:05:59,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 17:05:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:05:59,199 INFO L87 Difference]: Start difference. First operand 511 states and 748 transitions. Second operand has 26 states, 21 states have (on average 6.571428571428571) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 8 states have return successors, (39), 9 states have call predecessors, (39), 6 states have call successors, (39) [2021-12-06 17:06:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:00,045 INFO L93 Difference]: Finished difference Result 932 states and 1394 transitions. [2021-12-06 17:06:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:06:00,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 21 states have (on average 6.571428571428571) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 8 states have return successors, (39), 9 states have call predecessors, (39), 6 states have call successors, (39) Word has length 362 [2021-12-06 17:06:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:00,050 INFO L225 Difference]: With dead ends: 932 [2021-12-06 17:06:00,050 INFO L226 Difference]: Without dead ends: 527 [2021-12-06 17:06:00,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 697 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=852, Unknown=0, NotChecked=0, Total=930 [2021-12-06 17:06:00,060 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 24 mSDsluCounter, 9501 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9966 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:00,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 9966 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:06:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-06 17:06:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 511. [2021-12-06 17:06:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 344 states have (on average 1.188953488372093) internal successors, (409), 346 states have internal predecessors, (409), 126 states have call successors, (126), 30 states have call predecessors, (126), 39 states have return successors, (208), 134 states have call predecessors, (208), 124 states have call successors, (208) [2021-12-06 17:06:00,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 743 transitions. [2021-12-06 17:06:00,091 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 743 transitions. Word has length 362 [2021-12-06 17:06:00,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:00,105 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 743 transitions. [2021-12-06 17:06:00,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 21 states have (on average 6.571428571428571) internal successors, (138), 19 states have internal predecessors, (138), 7 states have call successors, (39), 3 states have call predecessors, (39), 8 states have return successors, (39), 9 states have call predecessors, (39), 6 states have call successors, (39) [2021-12-06 17:06:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 743 transitions. [2021-12-06 17:06:00,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-06 17:06:00,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:00,107 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:06:00,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 17:06:00,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 17:06:00,309 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1132465797, now seen corresponding path program 1 times [2021-12-06 17:06:00,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:00,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997787346] [2021-12-06 17:06:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:00,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:00,391 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:06:00,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638449336] [2021-12-06 17:06:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:00,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:06:00,392 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:06:00,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 17:06:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:01,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 3812 conjuncts, 130 conjunts are in the unsatisfiable core [2021-12-06 17:06:01,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:06:01,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:06:01,320 INFO L354 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2021-12-06 17:06:01,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:01,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:06:01,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:15,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:06:15,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:15,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:06:15,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:15,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:06:15,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:15,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:06:15,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 17:06:18,094 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5562 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5562))) (exists ((v_ArrVal_5561 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5561)))) is different from true [2021-12-06 17:06:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 857 backedges. 381 proven. 37 refuted. 3 times theorem prover too weak. 436 trivial. 0 not checked. [2021-12-06 17:06:19,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:06:20,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997787346] [2021-12-06 17:06:20,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:06:20,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638449336] [2021-12-06 17:06:20,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638449336] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:06:20,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:06:20,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-12-06 17:06:20,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327301112] [2021-12-06 17:06:20,633 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:06:20,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 17:06:20,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:20,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 17:06:20,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=992, Unknown=28, NotChecked=64, Total=1190 [2021-12-06 17:06:20,634 INFO L87 Difference]: Start difference. First operand 511 states and 743 transitions. Second operand has 31 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 9 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-06 17:06:44,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 17:06:46,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-12-06 17:06:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:47,493 INFO L93 Difference]: Finished difference Result 1223 states and 1894 transitions. [2021-12-06 17:06:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 17:06:47,493 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 9 states have call predecessors, (32), 13 states have call successors, (32) Word has length 344 [2021-12-06 17:06:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:47,498 INFO L225 Difference]: With dead ends: 1223 [2021-12-06 17:06:47,498 INFO L226 Difference]: Without dead ends: 774 [2021-12-06 17:06:47,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 533 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=203, Invalid=1901, Unknown=62, NotChecked=90, Total=2256 [2021-12-06 17:06:47,502 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 261 mSDsluCounter, 4645 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 8104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4337 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:47,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 5142 Invalid, 8104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3557 Invalid, 1 Unknown, 4337 Unchecked, 5.6s Time] [2021-12-06 17:06:47,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2021-12-06 17:06:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 532. [2021-12-06 17:06:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 362 states have (on average 1.1878453038674033) internal successors, (430), 365 states have internal predecessors, (430), 127 states have call successors, (127), 30 states have call predecessors, (127), 41 states have return successors, (239), 136 states have call predecessors, (239), 125 states have call successors, (239) [2021-12-06 17:06:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 796 transitions. [2021-12-06 17:06:47,529 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 796 transitions. Word has length 344 [2021-12-06 17:06:47,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:47,529 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 796 transitions. [2021-12-06 17:06:47,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.928571428571429) internal successors, (138), 27 states have internal predecessors, (138), 13 states have call successors, (35), 7 states have call predecessors, (35), 10 states have return successors, (32), 9 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-06 17:06:47,530 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 796 transitions. [2021-12-06 17:06:47,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-12-06 17:06:47,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:47,532 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:06:47,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 17:06:47,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:47,733 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1291082092, now seen corresponding path program 1 times [2021-12-06 17:06:47,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:47,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57286231] [2021-12-06 17:06:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:47,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:47,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:06:47,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712511819] [2021-12-06 17:06:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:47,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:06:47,819 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:06:47,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 17:06:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:48,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 3841 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 17:06:48,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:06:48,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 17:06:49,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2021-12-06 17:06:49,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-12-06 17:06:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 433 proven. 6 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2021-12-06 17:06:49,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:06:50,409 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-06 17:06:50,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 33 [2021-12-06 17:06:50,425 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-06 17:06:50,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 20 [2021-12-06 17:06:50,647 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-06 17:06:50,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-06 17:06:50,652 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-06 17:06:50,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 17:06:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 11 proven. 96 refuted. 0 times theorem prover too weak. 725 trivial. 0 not checked. [2021-12-06 17:06:50,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:06:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57286231] [2021-12-06 17:06:50,878 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:06:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712511819] [2021-12-06 17:06:50,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712511819] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:06:50,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:06:50,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 31 [2021-12-06 17:06:50,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513766444] [2021-12-06 17:06:50,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:06:50,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 17:06:50,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:06:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 17:06:50,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2021-12-06 17:06:50,880 INFO L87 Difference]: Start difference. First operand 532 states and 796 transitions. Second operand has 31 states, 28 states have (on average 6.357142857142857) internal successors, (178), 27 states have internal predecessors, (178), 11 states have call successors, (58), 4 states have call predecessors, (58), 8 states have return successors, (55), 11 states have call predecessors, (55), 10 states have call successors, (55) [2021-12-06 17:06:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:06:53,275 INFO L93 Difference]: Finished difference Result 1078 states and 1635 transitions. [2021-12-06 17:06:53,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:06:53,276 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 6.357142857142857) internal successors, (178), 27 states have internal predecessors, (178), 11 states have call successors, (58), 4 states have call predecessors, (58), 8 states have return successors, (55), 11 states have call predecessors, (55), 10 states have call successors, (55) Word has length 346 [2021-12-06 17:06:53,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:06:53,281 INFO L225 Difference]: With dead ends: 1078 [2021-12-06 17:06:53,281 INFO L226 Difference]: Without dead ends: 634 [2021-12-06 17:06:53,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 665 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=2070, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 17:06:53,285 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 195 mSDsluCounter, 9909 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 10335 SdHoareTripleChecker+Invalid, 3376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 168 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:06:53,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 10335 Invalid, 3376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3161 Invalid, 0 Unknown, 168 Unchecked, 1.9s Time] [2021-12-06 17:06:53,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-12-06 17:06:53,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 541. [2021-12-06 17:06:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 369 states have (on average 1.184281842818428) internal successors, (437), 373 states have internal predecessors, (437), 128 states have call successors, (128), 30 states have call predecessors, (128), 42 states have return successors, (241), 137 states have call predecessors, (241), 126 states have call successors, (241) [2021-12-06 17:06:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 806 transitions. [2021-12-06 17:06:53,313 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 806 transitions. Word has length 346 [2021-12-06 17:06:53,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:06:53,313 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 806 transitions. [2021-12-06 17:06:53,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 6.357142857142857) internal successors, (178), 27 states have internal predecessors, (178), 11 states have call successors, (58), 4 states have call predecessors, (58), 8 states have return successors, (55), 11 states have call predecessors, (55), 10 states have call successors, (55) [2021-12-06 17:06:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 806 transitions. [2021-12-06 17:06:53,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2021-12-06 17:06:53,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:06:53,316 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:06:53,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 17:06:53,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:53,518 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:06:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:06:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1393235244, now seen corresponding path program 1 times [2021-12-06 17:06:53,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:06:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974298199] [2021-12-06 17:06:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:53,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:06:53,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:06:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544677327] [2021-12-06 17:06:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:06:53,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:06:53,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:06:53,610 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:06:53,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 17:06:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:06:54,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3847 conjuncts, 120 conjunts are in the unsatisfiable core [2021-12-06 17:06:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:06:56,511 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6126 Int) (v_ArrVal_6125 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6126))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6125))))) is different from true [2021-12-06 17:06:58,531 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6126 Int) (v_ArrVal_6125 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6126))) (= |c_#memory_$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_6125))))) is different from true [2021-12-06 17:06:58,594 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 17:06:58,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 42 [2021-12-06 17:06:58,607 INFO L354 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2021-12-06 17:06:58,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 36 [2021-12-06 17:07:01,067 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6131 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6129 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6131)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6129))))) is different from true [2021-12-06 17:07:30,434 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6131 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6129 Int)) (let ((.cse0 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (and (= (select (select (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6129)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse0) 0) (= (select (select (store |c_old(#memory_$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_6131)) |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse0) 0)))) is different from true [2021-12-06 17:07:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 519 proven. 35 refuted. 15 times theorem prover too weak. 227 trivial. 36 not checked. [2021-12-06 17:07:30,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:07:33,043 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6152 Int) (v_ArrVal_6151 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_424| Int)) (let ((.cse0 (+ |c_s_sift_either_~queue#1.offset| 40))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_424| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_424|) 0 v_ArrVal_6151)) |c_s_sift_either_~queue#1.base|) .cse0) 0)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_424| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_424|) 0 v_ArrVal_6152)) |c_s_sift_either_~queue#1.base|) .cse0) 0))))) is different from false [2021-12-06 17:07:33,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:07:33,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974298199] [2021-12-06 17:07:33,045 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:07:33,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544677327] [2021-12-06 17:07:33,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544677327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:07:33,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:07:33,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2021-12-06 17:07:33,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385532353] [2021-12-06 17:07:33,046 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:07:33,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 17:07:33,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:07:33,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 17:07:33,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=530, Unknown=14, NotChecked=250, Total=870 [2021-12-06 17:07:33,047 INFO L87 Difference]: Start difference. First operand 541 states and 806 transitions. Second operand has 29 states, 26 states have (on average 6.923076923076923) internal successors, (180), 27 states have internal predecessors, (180), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) [2021-12-06 17:07:35,360 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6131 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6129 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6131)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6129))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6126 Int) (v_ArrVal_6125 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6126))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6125)))))) is different from true [2021-12-06 17:08:26,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:08:26,812 INFO L93 Difference]: Finished difference Result 1498 states and 2362 transitions. [2021-12-06 17:08:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 17:08:26,812 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 6.923076923076923) internal successors, (180), 27 states have internal predecessors, (180), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) Word has length 354 [2021-12-06 17:08:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:08:26,819 INFO L225 Difference]: With dead ends: 1498 [2021-12-06 17:08:26,819 INFO L226 Difference]: Without dead ends: 1019 [2021-12-06 17:08:26,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 480 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 88.2s TimeCoverageRelationStatistics Valid=234, Invalid=1645, Unknown=37, NotChecked=534, Total=2450 [2021-12-06 17:08:26,823 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 429 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 5020 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 10484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 5020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5225 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:08:26,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 5648 Invalid, 10484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 5020 Invalid, 0 Unknown, 5225 Unchecked, 3.0s Time] [2021-12-06 17:08:26,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2021-12-06 17:08:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 718. [2021-12-06 17:08:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 520 states have (on average 1.1692307692307693) internal successors, (608), 524 states have internal predecessors, (608), 142 states have call successors, (142), 34 states have call predecessors, (142), 54 states have return successors, (341), 159 states have call predecessors, (341), 140 states have call successors, (341) [2021-12-06 17:08:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1091 transitions. [2021-12-06 17:08:26,871 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1091 transitions. Word has length 354 [2021-12-06 17:08:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:08:26,871 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1091 transitions. [2021-12-06 17:08:26,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 6.923076923076923) internal successors, (180), 27 states have internal predecessors, (180), 13 states have call successors, (41), 5 states have call predecessors, (41), 10 states have return successors, (38), 11 states have call predecessors, (38), 13 states have call successors, (38) [2021-12-06 17:08:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1091 transitions. [2021-12-06 17:08:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-12-06 17:08:26,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:08:26,875 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:08:26,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 17:08:27,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:08:27,076 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:08:27,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:08:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 525711995, now seen corresponding path program 1 times [2021-12-06 17:08:27,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:08:27,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768568639] [2021-12-06 17:08:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:27,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:08:27,155 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:08:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1087774621] [2021-12-06 17:08:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:27,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:08:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:08:27,157 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:08:27,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 17:08:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:27,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 3851 conjuncts, 51 conjunts are in the unsatisfiable core [2021-12-06 17:08:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:08:27,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 17:08:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 426 proven. 24 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2021-12-06 17:08:28,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:08:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 838 backedges. 98 proven. 39 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2021-12-06 17:08:29,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:08:29,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768568639] [2021-12-06 17:08:29,358 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:08:29,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087774621] [2021-12-06 17:08:29,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087774621] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:08:29,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:08:29,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 32 [2021-12-06 17:08:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399578638] [2021-12-06 17:08:29,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:08:29,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 17:08:29,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:08:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 17:08:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:08:29,360 INFO L87 Difference]: Start difference. First operand 718 states and 1091 transitions. Second operand has 32 states, 27 states have (on average 6.222222222222222) internal successors, (168), 23 states have internal predecessors, (168), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (46), 13 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-06 17:08:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:08:30,508 INFO L93 Difference]: Finished difference Result 1391 states and 2119 transitions. [2021-12-06 17:08:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:08:30,509 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 6.222222222222222) internal successors, (168), 23 states have internal predecessors, (168), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (46), 13 states have call predecessors, (46), 8 states have call successors, (46) Word has length 360 [2021-12-06 17:08:30,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:08:30,516 INFO L225 Difference]: With dead ends: 1391 [2021-12-06 17:08:30,516 INFO L226 Difference]: Without dead ends: 865 [2021-12-06 17:08:30,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 687 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 17:08:30,520 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 42 mSDsluCounter, 11774 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 12275 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:08:30,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 12275 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:08:30,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2021-12-06 17:08:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 821. [2021-12-06 17:08:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 614 states have (on average 1.1693811074918568) internal successors, (718), 616 states have internal predecessors, (718), 147 states have call successors, (147), 34 states have call predecessors, (147), 58 states have return successors, (396), 170 states have call predecessors, (396), 145 states have call successors, (396) [2021-12-06 17:08:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1261 transitions. [2021-12-06 17:08:30,582 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1261 transitions. Word has length 360 [2021-12-06 17:08:30,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:08:30,583 INFO L470 AbstractCegarLoop]: Abstraction has 821 states and 1261 transitions. [2021-12-06 17:08:30,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 6.222222222222222) internal successors, (168), 23 states have internal predecessors, (168), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (46), 13 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-06 17:08:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1261 transitions. [2021-12-06 17:08:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2021-12-06 17:08:30,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:08:30,598 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:08:30,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-06 17:08:30,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:08:30,798 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:08:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:08:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1454982707, now seen corresponding path program 2 times [2021-12-06 17:08:30,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:08:30,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950372949] [2021-12-06 17:08:30,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:30,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:08:30,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:08:30,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [511476988] [2021-12-06 17:08:30,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:08:30,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:08:30,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:08:30,848 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:08:30,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 17:08:31,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:08:31,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:08:31,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 3861 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-06 17:08:31,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:08:31,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 17:08:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 546 proven. 19 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-12-06 17:08:32,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:08:33,520 INFO L134 CoverageAnalysis]: Checked inductivity of 856 backedges. 56 proven. 91 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2021-12-06 17:08:33,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:08:33,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950372949] [2021-12-06 17:08:33,520 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:08:33,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511476988] [2021-12-06 17:08:33,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511476988] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:08:33,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:08:33,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18] total 32 [2021-12-06 17:08:33,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757353276] [2021-12-06 17:08:33,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:08:33,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 17:08:33,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:08:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 17:08:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:08:33,527 INFO L87 Difference]: Start difference. First operand 821 states and 1261 transitions. Second operand has 32 states, 27 states have (on average 7.407407407407407) internal successors, (200), 23 states have internal predecessors, (200), 9 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 13 states have call predecessors, (52), 8 states have call successors, (52) [2021-12-06 17:08:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:08:34,800 INFO L93 Difference]: Finished difference Result 1542 states and 2357 transitions. [2021-12-06 17:08:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:08:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 7.407407407407407) internal successors, (200), 23 states have internal predecessors, (200), 9 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 13 states have call predecessors, (52), 8 states have call successors, (52) Word has length 364 [2021-12-06 17:08:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:08:34,805 INFO L225 Difference]: With dead ends: 1542 [2021-12-06 17:08:34,805 INFO L226 Difference]: Without dead ends: 837 [2021-12-06 17:08:34,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 695 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 17:08:34,808 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 30 mSDsluCounter, 13088 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 13585 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:08:34,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 13585 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:08:34,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-12-06 17:08:34,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 774. [2021-12-06 17:08:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 572 states have (on average 1.1748251748251748) internal successors, (672), 574 states have internal predecessors, (672), 144 states have call successors, (144), 34 states have call predecessors, (144), 56 states have return successors, (365), 165 states have call predecessors, (365), 142 states have call successors, (365) [2021-12-06 17:08:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1181 transitions. [2021-12-06 17:08:34,848 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1181 transitions. Word has length 364 [2021-12-06 17:08:34,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:08:34,848 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1181 transitions. [2021-12-06 17:08:34,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 7.407407407407407) internal successors, (200), 23 states have internal predecessors, (200), 9 states have call successors, (50), 3 states have call predecessors, (50), 10 states have return successors, (52), 13 states have call predecessors, (52), 8 states have call successors, (52) [2021-12-06 17:08:34,848 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1181 transitions. [2021-12-06 17:08:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-12-06 17:08:34,852 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:08:34,852 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:08:34,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-06 17:08:35,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-06 17:08:35,053 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:08:35,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:08:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 387030613, now seen corresponding path program 1 times [2021-12-06 17:08:35,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:08:35,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594819354] [2021-12-06 17:08:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:35,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:08:35,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:08:35,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561737102] [2021-12-06 17:08:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:08:35,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:08:35,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:08:35,146 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:08:35,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 17:08:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:08:35,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 3848 conjuncts, 241 conjunts are in the unsatisfiable core [2021-12-06 17:08:35,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:08:35,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-06 17:08:36,081 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6929 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6929) |c_#memory_$Pointer$.base|)) is different from true [2021-12-06 17:08:36,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:08:36,234 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6930 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6930))) is different from true [2021-12-06 17:08:36,768 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6932 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6932))) (exists ((v_ArrVal_6931 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 17:08:36,785 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6931 (Array Int Int)) (v_ArrVal_6932 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6932)))) is different from true [2021-12-06 17:08:36,836 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 17:08:36,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 37 [2021-12-06 17:08:36,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-06 17:08:36,905 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_557| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6931 (Array Int Int)) (v_ArrVal_6930 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_557| v_ArrVal_6930))) (and (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) (not (= (select (select |c_#memory_$Pointer$.offset| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)))) (= (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 17:08:37,183 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-06 17:08:37,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 67 [2021-12-06 17:08:37,387 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6933 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6933) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6934 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6934))))) is different from true [2021-12-06 17:08:38,266 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6936 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6935))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 17:08:38,290 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6936 (Array Int Int))) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6935))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|))) is different from true [2021-12-06 17:08:38,382 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| Int) (v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6933 (Array Int Int)) (v_ArrVal_6934 (Array Int Int)) (v_ArrVal_6936 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| v_ArrVal_6934)) (.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| v_ArrVal_6933))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.offset| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6935))) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 17:08:38,945 INFO L354 Elim1Store]: treesize reduction 78, result has 39.5 percent of original size [2021-12-06 17:08:38,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 63 treesize of output 107 [2021-12-06 17:08:38,968 INFO L354 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2021-12-06 17:08:38,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 51 [2021-12-06 17:08:38,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 17:08:39,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 17:08:39,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 17:08:40,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:08:40,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 51 [2021-12-06 17:08:40,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 17:08:40,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:08:40,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 46 treesize of output 51 [2021-12-06 17:08:40,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:08:40,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2021-12-06 17:08:40,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-06 17:08:40,251 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-06 17:08:40,477 INFO L354 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-06 17:08:40,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 61 [2021-12-06 17:08:41,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 17:08:41,006 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 17:08:41,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 40 [2021-12-06 17:08:43,389 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6938 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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_6938)))) is different from true [2021-12-06 17:09:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 436 proven. 72 refuted. 2 times theorem prover too weak. 167 trivial. 163 not checked. [2021-12-06 17:09:12,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:14,411 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6946 Int) (|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_570| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_570| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_570|) 0 v_ArrVal_6946)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) is different from false [2021-12-06 17:09:14,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:14,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594819354] [2021-12-06 17:09:14,414 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561737102] [2021-12-06 17:09:14,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561737102] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:09:14,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:09:14,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2021-12-06 17:09:14,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169404521] [2021-12-06 17:09:14,414 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:14,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-12-06 17:09:14,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:14,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-12-06 17:09:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2232, Unknown=206, NotChecked=1188, Total=3782 [2021-12-06 17:09:14,416 INFO L87 Difference]: Start difference. First operand 774 states and 1181 transitions. Second operand has 58 states, 52 states have (on average 4.173076923076923) internal successors, (217), 54 states have internal predecessors, (217), 24 states have call successors, (46), 7 states have call predecessors, (46), 18 states have return successors, (43), 22 states have call predecessors, (43), 24 states have call successors, (43) [2021-12-06 17:09:16,644 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6932 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6932))) (exists ((v_ArrVal_6931 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|)))) (exists ((v_ArrVal_6929 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6929) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_6933 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6933) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6934 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6934))))) (exists ((v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6936 (Array Int Int))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6935))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_6938 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_$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$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_6938)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6930 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6930)))) is different from true [2021-12-06 17:09:30,268 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6931 (Array Int Int)) (v_ArrVal_6932 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6932)))) (exists ((v_ArrVal_6929 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6929) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6936 (Array Int Int))) (and (= |c_#memory_$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$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6935))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|)))) is different from true [2021-12-06 17:09:30,676 WARN L860 $PredicateComparison]: unable to prove that (and (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short871#1|) (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| Int) (v_ArrVal_6935 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6933 (Array Int Int)) (v_ArrVal_6934 (Array Int Int)) (v_ArrVal_6936 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.offset)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| v_ArrVal_6934)) (.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|)) (.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_558| v_ArrVal_6933))) (and (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= |c_#memory_$Pointer$.offset| (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_6935))) (= (select (select .cse2 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0) (= (store .cse2 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6936) |c_#memory_$Pointer$.base|))))) is different from true [2021-12-06 17:09:30,935 WARN L860 $PredicateComparison]: unable to prove that (and (not |c_aws_priority_queue_is_valid_aws_priority_queue_backpointers_valid_#t~short871#1|) (exists ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_557| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_6931 (Array Int Int)) (v_ArrVal_6930 (Array Int Int))) (let ((.cse0 (store |c_old(#memory_$Pointer$.base)| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_557| v_ArrVal_6930))) (and (let ((.cse1 (+ 40 |c_aws_priority_queue_is_valid_#in~queue#1.offset|))) (or (not (= (select (select .cse0 |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)) (= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| |c_aws_priority_queue_is_valid_#in~queue#1.base|) (not (= (select (select |c_#memory_$Pointer$.offset| |c_aws_priority_queue_is_valid_#in~queue#1.base|) .cse1) 0)))) (= (store .cse0 |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_6931) |c_#memory_$Pointer$.base|))))) is different from true [2021-12-06 17:09:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:34,378 INFO L93 Difference]: Finished difference Result 1800 states and 2927 transitions. [2021-12-06 17:09:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 17:09:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 52 states have (on average 4.173076923076923) internal successors, (217), 54 states have internal predecessors, (217), 24 states have call successors, (46), 7 states have call predecessors, (46), 18 states have return successors, (43), 22 states have call predecessors, (43), 24 states have call successors, (43) Word has length 350 [2021-12-06 17:09:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:34,386 INFO L225 Difference]: With dead ends: 1800 [2021-12-06 17:09:34,386 INFO L226 Difference]: Without dead ends: 1201 [2021-12-06 17:09:34,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 322 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 50.9s TimeCoverageRelationStatistics Valid=366, Invalid=5669, Unknown=345, NotChecked=2550, Total=8930 [2021-12-06 17:09:34,391 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 536 mSDsluCounter, 11989 mSDsCounter, 0 mSdLazyCounter, 5903 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 12567 SdHoareTripleChecker+Invalid, 20985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 5903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14572 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:34,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 12567 Invalid, 20985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 5903 Invalid, 0 Unknown, 14572 Unchecked, 3.8s Time] [2021-12-06 17:09:34,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2021-12-06 17:09:34,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 798. [2021-12-06 17:09:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 586 states have (on average 1.1757679180887373) internal successors, (689), 588 states have internal predecessors, (689), 153 states have call successors, (153), 36 states have call predecessors, (153), 57 states have return successors, (381), 173 states have call predecessors, (381), 151 states have call successors, (381) [2021-12-06 17:09:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1223 transitions. [2021-12-06 17:09:34,451 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1223 transitions. Word has length 350 [2021-12-06 17:09:34,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:34,452 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 1223 transitions. [2021-12-06 17:09:34,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 52 states have (on average 4.173076923076923) internal successors, (217), 54 states have internal predecessors, (217), 24 states have call successors, (46), 7 states have call predecessors, (46), 18 states have return successors, (43), 22 states have call predecessors, (43), 24 states have call successors, (43) [2021-12-06 17:09:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1223 transitions. [2021-12-06 17:09:34,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-06 17:09:34,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:34,456 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:09:34,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 17:09:34,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:34,657 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:34,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2098650663, now seen corresponding path program 2 times [2021-12-06 17:09:34,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:34,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914434933] [2021-12-06 17:09:34,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:34,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:34,743 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:34,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993485921] [2021-12-06 17:09:34,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:09:34,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:34,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:34,744 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:34,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 17:09:35,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:09:35,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:35,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:09:35,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:36,088 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 463 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-12-06 17:09:36,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:09:36,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:36,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914434933] [2021-12-06 17:09:36,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:36,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993485921] [2021-12-06 17:09:36,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993485921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:36,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:36,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:09:36,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250039670] [2021-12-06 17:09:36,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:36,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:09:36,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:36,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:09:36,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:36,090 INFO L87 Difference]: Start difference. First operand 798 states and 1223 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:09:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:36,458 INFO L93 Difference]: Finished difference Result 1512 states and 2445 transitions. [2021-12-06 17:09:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:09:36,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 352 [2021-12-06 17:09:36,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:36,463 INFO L225 Difference]: With dead ends: 1512 [2021-12-06 17:09:36,464 INFO L226 Difference]: Without dead ends: 767 [2021-12-06 17:09:36,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:09:36,467 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 13 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:36,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 1842 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:09:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2021-12-06 17:09:36,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2021-12-06 17:09:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 556 states have (on average 1.169064748201439) internal successors, (650), 559 states have internal predecessors, (650), 152 states have call successors, (152), 36 states have call predecessors, (152), 55 states have return successors, (354), 169 states have call predecessors, (354), 150 states have call successors, (354) [2021-12-06 17:09:36,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1156 transitions. [2021-12-06 17:09:36,507 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1156 transitions. Word has length 352 [2021-12-06 17:09:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:36,507 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 1156 transitions. [2021-12-06 17:09:36,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-06 17:09:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1156 transitions. [2021-12-06 17:09:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-12-06 17:09:36,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:36,511 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 17:09:36,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-06 17:09:36,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 17:09:36,712 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:36,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:36,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1296851244, now seen corresponding path program 3 times [2021-12-06 17:09:36,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:36,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79223982] [2021-12-06 17:09:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:36,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:36,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912725165] [2021-12-06 17:09:36,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:09:36,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:36,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:36,789 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:36,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39ad2ac0-0cdd-499b-b8e3-987c940b6241/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process