./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:42:17,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:42:17,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:42:17,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:42:17,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:42:17,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:42:17,343 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:42:17,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:42:17,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:42:17,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:42:17,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:42:17,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:42:17,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:42:17,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:42:17,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:42:17,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:42:17,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:42:17,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:42:17,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:42:17,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:42:17,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:42:17,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:42:17,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:42:17,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:42:17,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:42:17,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:42:17,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:42:17,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:42:17,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:42:17,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:42:17,381 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:42:17,382 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:42:17,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:42:17,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:42:17,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:42:17,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:42:17,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:42:17,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:42:17,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:42:17,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:42:17,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:42:17,401 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:42:17,434 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:42:17,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:42:17,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:42:17,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:42:17,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:42:17,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:42:17,445 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:42:17,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:42:17,445 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:42:17,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:42:17,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:42:17,447 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:42:17,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:42:17,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:42:17,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:42:17,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:42:17,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:42:17,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:42:17,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:42:17,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:42:17,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:42:17,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:17,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:42:17,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:42:17,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:42:17,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:42:17,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:42:17,451 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:42:17,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:42:17,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:42:17,452 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_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2022-11-20 12:42:17,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:42:17,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:42:17,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:42:17,796 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:42:17,797 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:42:17,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-20 12:42:20,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:42:21,569 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:42:21,570 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-20 12:42:21,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/data/61e5319fc/22e9968bd692450e9601262eb0a9bd7c/FLAG0e9949fa5 [2022-11-20 12:42:21,639 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/data/61e5319fc/22e9968bd692450e9601262eb0a9bd7c [2022-11-20 12:42:21,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:42:21,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:42:21,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:21,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:42:21,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:42:21,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:21" (1/1) ... [2022-11-20 12:42:21,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1069a681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:21, skipping insertion in model container [2022-11-20 12:42:21,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:42:21" (1/1) ... [2022-11-20 12:42:21,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:42:21,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:42:22,144 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-20 12:42:22,154 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-20 12:42:23,471 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,474 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,478 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,481 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,502 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,531 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,539 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,542 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:23,544 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,098 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:42:24,100 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:42:24,101 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:42:24,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:42:24,105 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:42:24,106 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:42:24,107 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:42:24,107 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:42:24,108 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:42:24,109 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:42:24,331 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:42:24,467 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,472 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:24,633 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:42:24,663 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-20 12:42:24,673 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-20 12:42:24,715 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,716 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,716 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,717 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,718 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,725 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,725 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,726 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,727 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,760 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:42:24,761 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:42:24,762 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:42:24,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:42:24,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:42:24,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:42:24,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:42:24,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:42:24,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:42:24,766 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:42:24,789 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:42:24,847 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,847 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:42:24,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:42:25,147 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:42:25,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25 WrapperNode [2022-11-20 12:42:25,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:42:25,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:25,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:42:25,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:42:25,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,380 INFO L138 Inliner]: procedures = 690, calls = 2614, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2022-11-20 12:42:25,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:42:25,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:42:25,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:42:25,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:42:25,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:42:25,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:42:25,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:42:25,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:42:25,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (1/1) ... [2022-11-20 12:42:25,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:42:25,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:25,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:42:25,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:42:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-20 12:42:25,545 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-20 12:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:42:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:42:25,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:42:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:42:25,547 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:42:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 12:42:25,548 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 12:42:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:42:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:42:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2022-11-20 12:42:25,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2022-11-20 12:42:25,861 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:42:25,862 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:42:27,357 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:42:27,367 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:42:27,368 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:42:27,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:27 BoogieIcfgContainer [2022-11-20 12:42:27,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:42:27,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:42:27,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:42:27,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:42:27,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:42:21" (1/3) ... [2022-11-20 12:42:27,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed85823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:27, skipping insertion in model container [2022-11-20 12:42:27,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:42:25" (2/3) ... [2022-11-20 12:42:27,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed85823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:42:27, skipping insertion in model container [2022-11-20 12:42:27,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:27" (3/3) ... [2022-11-20 12:42:27,387 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2022-11-20 12:42:27,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:42:27,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:42:27,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:42:27,499 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@57dce105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:42:27,499 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:42:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 12:42:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 12:42:27,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:27,515 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:27,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:27,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2742655, now seen corresponding path program 1 times [2022-11-20 12:42:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67251593] [2022-11-20 12:42:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:27,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:27,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67251593] [2022-11-20 12:42:28,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67251593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:28,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:28,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:42:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580403026] [2022-11-20 12:42:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:28,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:42:28,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:42:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:28,370 INFO L87 Difference]: Start difference. First operand has 73 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:28,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:28,730 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2022-11-20 12:42:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:42:28,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-11-20 12:42:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:28,743 INFO L225 Difference]: With dead ends: 141 [2022-11-20 12:42:28,744 INFO L226 Difference]: Without dead ends: 66 [2022-11-20 12:42:28,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:42:28,752 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 35 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:28,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:42:28,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-20 12:42:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-20 12:42:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 45 states have internal predecessors, (52), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:42:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-20 12:42:28,804 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 31 [2022-11-20 12:42:28,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:28,804 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-20 12:42:28,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:28,805 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-20 12:42:28,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 12:42:28,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:28,807 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:28,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:42:28,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:28,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:28,809 INFO L85 PathProgramCache]: Analyzing trace with hash -873311295, now seen corresponding path program 1 times [2022-11-20 12:42:28,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:28,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619386713] [2022-11-20 12:42:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:28,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:29,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:29,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:29,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619386713] [2022-11-20 12:42:29,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619386713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:29,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:29,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:42:29,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832259356] [2022-11-20 12:42:29,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:29,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:42:29,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:29,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:42:29,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:42:29,760 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:30,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:30,127 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2022-11-20 12:42:30,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:42:30,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-11-20 12:42:30,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:30,133 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:42:30,133 INFO L226 Difference]: Without dead ends: 69 [2022-11-20 12:42:30,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:42:30,138 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 58 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:30,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 119 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:42:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-20 12:42:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-20 12:42:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-20 12:42:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2022-11-20 12:42:30,162 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 31 [2022-11-20 12:42:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:30,164 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2022-11-20 12:42:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2022-11-20 12:42:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-20 12:42:30,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:30,166 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:30,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:42:30,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash 355281356, now seen corresponding path program 1 times [2022-11-20 12:42:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:30,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3978905] [2022-11-20 12:42:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:31,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:31,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3978905] [2022-11-20 12:42:31,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3978905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:31,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:31,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:42:31,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018076105] [2022-11-20 12:42:31,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:31,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:42:31,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:42:31,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:42:31,454 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:32,032 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2022-11-20 12:42:32,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:42:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2022-11-20 12:42:32,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:32,034 INFO L225 Difference]: With dead ends: 81 [2022-11-20 12:42:32,034 INFO L226 Difference]: Without dead ends: 79 [2022-11-20 12:42:32,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:42:32,036 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 62 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:32,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 250 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:42:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-20 12:42:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2022-11-20 12:42:32,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 55 states have internal predecessors, (60), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 12:42:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-11-20 12:42:32,049 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 37 [2022-11-20 12:42:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:32,050 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-11-20 12:42:32,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:32,050 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-11-20 12:42:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:42:32,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:32,052 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:32,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:42:32,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:32,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1397933292, now seen corresponding path program 1 times [2022-11-20 12:42:32,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:32,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140656992] [2022-11-20 12:42:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:32,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:32,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:33,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:33,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:33,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140656992] [2022-11-20 12:42:33,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140656992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:33,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:33,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:42:33,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124923916] [2022-11-20 12:42:33,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:33,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:42:33,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:33,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:42:33,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:42:33,182 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:33,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:33,644 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2022-11-20 12:42:33,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:42:33,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-20 12:42:33,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:33,646 INFO L225 Difference]: With dead ends: 162 [2022-11-20 12:42:33,647 INFO L226 Difference]: Without dead ends: 103 [2022-11-20 12:42:33,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:42:33,648 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 115 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:33,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 120 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:42:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-20 12:42:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2022-11-20 12:42:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 60 states have internal predecessors, (67), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 12:42:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2022-11-20 12:42:33,673 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 41 [2022-11-20 12:42:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:33,676 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2022-11-20 12:42:33,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2022-11-20 12:42:33,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:42:33,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:33,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:33,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:42:33,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1139767854, now seen corresponding path program 1 times [2022-11-20 12:42:33,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:33,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090835304] [2022-11-20 12:42:33,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:38,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:38,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090835304] [2022-11-20 12:42:38,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090835304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:38,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:38,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:42:38,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586756016] [2022-11-20 12:42:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:38,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:42:38,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:42:38,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:42:38,271 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:39,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:39,395 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2022-11-20 12:42:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:42:39,396 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-20 12:42:39,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:39,397 INFO L225 Difference]: With dead ends: 166 [2022-11-20 12:42:39,397 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 12:42:39,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:42:39,399 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 148 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:39,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 223 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:42:39,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 12:42:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2022-11-20 12:42:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 72 states have internal predecessors, (84), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 12:42:39,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2022-11-20 12:42:39,409 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 41 [2022-11-20 12:42:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2022-11-20 12:42:39,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2022-11-20 12:42:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:42:39,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:39,411 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:39,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:42:39,412 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:39,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:39,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1875335764, now seen corresponding path program 1 times [2022-11-20 12:42:39,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:39,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126056053] [2022-11-20 12:42:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:39,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:41,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:42,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126056053] [2022-11-20 12:42:42,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126056053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:42,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:42,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:42:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585398355] [2022-11-20 12:42:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:42,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:42:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:42:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:42:42,377 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:43,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:43,578 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2022-11-20 12:42:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:42:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-20 12:42:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:43,581 INFO L225 Difference]: With dead ends: 199 [2022-11-20 12:42:43,581 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 12:42:43,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:42:43,583 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 168 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:43,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 207 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:42:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 12:42:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2022-11-20 12:42:43,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 71 states have internal predecessors, (83), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-20 12:42:43,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2022-11-20 12:42:43,595 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 41 [2022-11-20 12:42:43,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:43,596 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2022-11-20 12:42:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:43,596 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2022-11-20 12:42:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:42:43,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:43,597 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:43,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:42:43,598 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:43,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:43,598 INFO L85 PathProgramCache]: Analyzing trace with hash 28822424, now seen corresponding path program 1 times [2022-11-20 12:42:43,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:43,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520419542] [2022-11-20 12:42:43,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:43,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:46,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:46,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:42:46,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520419542] [2022-11-20 12:42:46,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520419542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:42:46,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239760696] [2022-11-20 12:42:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:46,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:42:46,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:42:46,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:42:46,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:42:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:42:47,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:42:47,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:47,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:42:47,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:42:48,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:48,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:42:48,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239760696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:48,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:42:48,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-11-20 12:42:48,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504897483] [2022-11-20 12:42:48,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:42:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:48,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:42:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:42:48,169 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:48,252 INFO L93 Difference]: Finished difference Result 216 states and 269 transitions. [2022-11-20 12:42:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:42:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-20 12:42:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:48,254 INFO L225 Difference]: With dead ends: 216 [2022-11-20 12:42:48,254 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 12:42:48,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:42:48,255 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 25 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:48,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 396 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-11-20 12:42:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 12:42:48,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-20 12:42:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 95 states have internal predecessors, (112), 16 states have call successors, (16), 8 states have call predecessors, (16), 11 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-20 12:42:48,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2022-11-20 12:42:48,272 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 41 [2022-11-20 12:42:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:48,273 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2022-11-20 12:42:48,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:42:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2022-11-20 12:42:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:42:48,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:48,278 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:48,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:42:48,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 12:42:48,488 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash 286987862, now seen corresponding path program 1 times [2022-11-20 12:42:48,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:48,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364205414] [2022-11-20 12:42:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:48,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:49,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:49,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364205414] [2022-11-20 12:42:49,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364205414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:49,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:49,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:42:49,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528297787] [2022-11-20 12:42:49,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:49,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:42:49,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:49,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:42:49,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:42:49,175 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:49,535 INFO L93 Difference]: Finished difference Result 207 states and 259 transitions. [2022-11-20 12:42:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:42:49,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-20 12:42:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:49,537 INFO L225 Difference]: With dead ends: 207 [2022-11-20 12:42:49,537 INFO L226 Difference]: Without dead ends: 123 [2022-11-20 12:42:49,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:42:49,538 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 67 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:49,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 120 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:42:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-20 12:42:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2022-11-20 12:42:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 86 states have internal predecessors, (99), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-20 12:42:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2022-11-20 12:42:49,558 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 41 [2022-11-20 12:42:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:49,560 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2022-11-20 12:42:49,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2022-11-20 12:42:49,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 12:42:49,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:49,565 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:49,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:42:49,566 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:49,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 379920541, now seen corresponding path program 1 times [2022-11-20 12:42:49,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:49,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498942594] [2022-11-20 12:42:49,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:49,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:50,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:50,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498942594] [2022-11-20 12:42:50,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498942594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:50,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:50,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:42:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580661394] [2022-11-20 12:42:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:50,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:42:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:42:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:42:50,449 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:51,002 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2022-11-20 12:42:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:42:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-11-20 12:42:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:51,004 INFO L225 Difference]: With dead ends: 132 [2022-11-20 12:42:51,004 INFO L226 Difference]: Without dead ends: 130 [2022-11-20 12:42:51,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:42:51,005 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:51,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 316 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:42:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-20 12:42:51,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2022-11-20 12:42:51,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.188235294117647) internal successors, (101), 88 states have internal predecessors, (101), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-20 12:42:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2022-11-20 12:42:51,015 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 43 [2022-11-20 12:42:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:51,016 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2022-11-20 12:42:51,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 12:42:51,016 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2022-11-20 12:42:51,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 12:42:51,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:51,017 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:51,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:42:51,018 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:51,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1080985119, now seen corresponding path program 1 times [2022-11-20 12:42:51,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:51,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74728215] [2022-11-20 12:42:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:42:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 12:42:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:42:54,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:54,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74728215] [2022-11-20 12:42:54,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74728215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:54,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:54,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-20 12:42:54,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150585790] [2022-11-20 12:42:54,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:54,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 12:42:54,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 12:42:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:42:54,764 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 12:42:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:56,722 INFO L93 Difference]: Finished difference Result 149 states and 175 transitions. [2022-11-20 12:42:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:42:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2022-11-20 12:42:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:56,747 INFO L225 Difference]: With dead ends: 149 [2022-11-20 12:42:56,747 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 12:42:56,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 12:42:56,748 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 121 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:56,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 363 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 12:42:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 12:42:56,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 105. [2022-11-20 12:42:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.2) internal successors, (96), 82 states have internal predecessors, (96), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-20 12:42:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2022-11-20 12:42:56,758 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 43 [2022-11-20 12:42:56,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:56,758 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2022-11-20 12:42:56,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 12:42:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2022-11-20 12:42:56,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 12:42:56,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:56,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:56,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:42:56,760 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:56,761 INFO L85 PathProgramCache]: Analyzing trace with hash -471568136, now seen corresponding path program 1 times [2022-11-20 12:42:56,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:56,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141505853] [2022-11-20 12:42:56,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:56,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:42:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:57,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:42:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:42:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:42:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:57,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:42:57,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:57,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141505853] [2022-11-20 12:42:57,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141505853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:57,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:57,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:42:57,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190868623] [2022-11-20 12:42:57,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:42:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:42:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:42:57,295 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:42:57,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:57,611 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2022-11-20 12:42:57,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:42:57,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2022-11-20 12:42:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:57,614 INFO L225 Difference]: With dead ends: 137 [2022-11-20 12:42:57,614 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 12:42:57,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:42:57,615 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 99 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:57,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 111 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:42:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 12:42:57,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 12:42:57,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 82 states have internal predecessors, (95), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-20 12:42:57,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2022-11-20 12:42:57,624 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 52 [2022-11-20 12:42:57,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:57,625 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2022-11-20 12:42:57,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:42:57,625 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2022-11-20 12:42:57,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-20 12:42:57,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:57,626 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:57,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:42:57,627 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash 416252355, now seen corresponding path program 1 times [2022-11-20 12:42:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:57,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476722783] [2022-11-20 12:42:57,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:57,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:42:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:58,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:42:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:42:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:42:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:42:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:42:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:42:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:42:58,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:42:58,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476722783] [2022-11-20 12:42:58,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476722783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:42:58,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:42:58,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:42:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568176221] [2022-11-20 12:42:58,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:42:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:42:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:42:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:42:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:42:58,488 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:42:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:42:59,011 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2022-11-20 12:42:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:42:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2022-11-20 12:42:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:42:59,013 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:42:59,013 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 12:42:59,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:42:59,014 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:42:59,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 234 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:42:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 12:42:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2022-11-20 12:42:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 93 states have internal predecessors, (104), 16 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-20 12:42:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2022-11-20 12:42:59,031 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 58 [2022-11-20 12:42:59,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:42:59,032 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2022-11-20 12:42:59,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:42:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2022-11-20 12:42:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:42:59,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:42:59,034 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:42:59,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:42:59,035 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:42:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:42:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash 361728585, now seen corresponding path program 1 times [2022-11-20 12:42:59,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:42:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740232333] [2022-11-20 12:42:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:42:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:42:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:02,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:02,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740232333] [2022-11-20 12:43:02,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740232333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:02,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420919297] [2022-11-20 12:43:02,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:02,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:02,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:02,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:43:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:03,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-20 12:43:03,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:03,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:43:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:43:04,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:05,635 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:43:05,635 INFO L350 Elim1Store]: Elim1 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 129 treesize of output 1 [2022-11-20 12:43:06,123 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-20 12:43:06,124 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:43:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:43:06,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420919297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:06,215 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:06,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 14] total 38 [2022-11-20 12:43:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776911176] [2022-11-20 12:43:06,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:06,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:43:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:06,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:43:06,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 12:43:06,218 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 12:43:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:10,161 INFO L93 Difference]: Finished difference Result 227 states and 281 transitions. [2022-11-20 12:43:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 12:43:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 62 [2022-11-20 12:43:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:10,163 INFO L225 Difference]: With dead ends: 227 [2022-11-20 12:43:10,164 INFO L226 Difference]: Without dead ends: 190 [2022-11-20 12:43:10,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 117 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=641, Invalid=3519, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 12:43:10,167 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 238 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 723 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:10,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 617 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1146 Invalid, 0 Unknown, 723 Unchecked, 1.3s Time] [2022-11-20 12:43:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-20 12:43:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2022-11-20 12:43:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 115 states have internal predecessors, (130), 18 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (27), 18 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-20 12:43:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 175 transitions. [2022-11-20 12:43:10,183 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 175 transitions. Word has length 62 [2022-11-20 12:43:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:10,184 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 175 transitions. [2022-11-20 12:43:10,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-20 12:43:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 175 transitions. [2022-11-20 12:43:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:43:10,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:10,186 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:10,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:43:10,397 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash -918135093, now seen corresponding path program 1 times [2022-11-20 12:43:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799044435] [2022-11-20 12:43:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:11,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:12,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799044435] [2022-11-20 12:43:12,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799044435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:12,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340778007] [2022-11-20 12:43:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:12,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:12,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:12,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:12,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:43:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 12:43:12,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:12,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:12,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:43:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:43:14,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:14,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 334 [2022-11-20 12:43:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:43:15,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340778007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:15,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:15,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 14] total 38 [2022-11-20 12:43:15,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042604431] [2022-11-20 12:43:15,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:15,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-20 12:43:15,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:15,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-20 12:43:15,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 12:43:15,190 INFO L87 Difference]: Start difference. First operand 145 states and 175 transitions. Second operand has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 12:43:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:17,813 INFO L93 Difference]: Finished difference Result 293 states and 353 transitions. [2022-11-20 12:43:17,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 12:43:17,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 62 [2022-11-20 12:43:17,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:17,817 INFO L225 Difference]: With dead ends: 293 [2022-11-20 12:43:17,817 INFO L226 Difference]: Without dead ends: 250 [2022-11-20 12:43:17,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 108 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=364, Invalid=2716, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 12:43:17,820 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 487 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 612 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:17,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 646 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1235 Invalid, 0 Unknown, 612 Unchecked, 1.3s Time] [2022-11-20 12:43:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-20 12:43:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 189. [2022-11-20 12:43:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 154 states have internal predecessors, (173), 20 states have call successors, (20), 13 states have call predecessors, (20), 20 states have return successors, (32), 21 states have call predecessors, (32), 19 states have call successors, (32) [2022-11-20 12:43:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2022-11-20 12:43:17,844 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 62 [2022-11-20 12:43:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:17,845 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2022-11-20 12:43:17,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 12:43:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2022-11-20 12:43:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:43:17,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:17,848 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:17,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:18,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:43:18,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:18,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:18,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1484784755, now seen corresponding path program 1 times [2022-11-20 12:43:18,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:18,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559245037] [2022-11-20 12:43:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:18,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:18,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:18,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559245037] [2022-11-20 12:43:18,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559245037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:18,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:18,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:43:18,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291808850] [2022-11-20 12:43:18,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:18,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:43:18,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:18,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:43:18,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:43:18,398 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:18,729 INFO L93 Difference]: Finished difference Result 288 states and 341 transitions. [2022-11-20 12:43:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:43:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2022-11-20 12:43:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:18,731 INFO L225 Difference]: With dead ends: 288 [2022-11-20 12:43:18,731 INFO L226 Difference]: Without dead ends: 192 [2022-11-20 12:43:18,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:43:18,732 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 95 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:18,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 120 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:43:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-20 12:43:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 180. [2022-11-20 12:43:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.15) internal successors, (161), 145 states have internal predecessors, (161), 20 states have call successors, (20), 13 states have call predecessors, (20), 19 states have return successors, (31), 21 states have call predecessors, (31), 19 states have call successors, (31) [2022-11-20 12:43:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 212 transitions. [2022-11-20 12:43:18,754 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 212 transitions. Word has length 62 [2022-11-20 12:43:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:18,755 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 212 transitions. [2022-11-20 12:43:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 212 transitions. [2022-11-20 12:43:18,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:43:18,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:18,762 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:18,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:43:18,763 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:18,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:18,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1530318863, now seen corresponding path program 1 times [2022-11-20 12:43:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:18,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570474835] [2022-11-20 12:43:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:20,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570474835] [2022-11-20 12:43:20,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570474835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:20,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982095787] [2022-11-20 12:43:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:20,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:20,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:20,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:20,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:43:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:21,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-20 12:43:21,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:21,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:21,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:21,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:43:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:43:22,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:24,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:43:24,073 INFO L350 Elim1Store]: Elim1 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 24182 treesize of output 1 [2022-11-20 12:43:24,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982095787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:24,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:24,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 31 [2022-11-20 12:43:24,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605070708] [2022-11-20 12:43:24,356 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:24,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:43:24,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:24,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:43:24,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1492, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 12:43:24,357 INFO L87 Difference]: Start difference. First operand 180 states and 212 transitions. Second operand has 31 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 25 states have internal predecessors, (69), 9 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:43:26,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:26,698 INFO L93 Difference]: Finished difference Result 249 states and 295 transitions. [2022-11-20 12:43:26,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 12:43:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 25 states have internal predecessors, (69), 9 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 62 [2022-11-20 12:43:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:26,701 INFO L225 Difference]: With dead ends: 249 [2022-11-20 12:43:26,701 INFO L226 Difference]: Without dead ends: 215 [2022-11-20 12:43:26,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=317, Invalid=2981, Unknown=8, NotChecked=0, Total=3306 [2022-11-20 12:43:26,704 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 236 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 411 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:26,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 862 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1045 Invalid, 0 Unknown, 411 Unchecked, 1.0s Time] [2022-11-20 12:43:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-20 12:43:26,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 178. [2022-11-20 12:43:26,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 138 states have (on average 1.144927536231884) internal successors, (158), 143 states have internal predecessors, (158), 20 states have call successors, (20), 13 states have call predecessors, (20), 19 states have return successors, (31), 21 states have call predecessors, (31), 19 states have call successors, (31) [2022-11-20 12:43:26,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 209 transitions. [2022-11-20 12:43:26,721 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 209 transitions. Word has length 62 [2022-11-20 12:43:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 209 transitions. [2022-11-20 12:43:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 25 states have internal predecessors, (69), 9 states have call successors, (14), 5 states have call predecessors, (14), 7 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-20 12:43:26,722 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 209 transitions. [2022-11-20 12:43:26,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 12:43:26,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:26,723 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:26,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:26,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:43:26,940 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1953106119, now seen corresponding path program 1 times [2022-11-20 12:43:26,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:26,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144504284] [2022-11-20 12:43:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,291 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 12:43:27,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:27,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144504284] [2022-11-20 12:43:27,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144504284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290284422] [2022-11-20 12:43:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:27,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:27,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:27,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:27,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:43:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:27,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:43:27,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:43:27,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:27,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290284422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:27,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:27,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-20 12:43:27,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435132054] [2022-11-20 12:43:27,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:27,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:43:27,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:27,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:43:27,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:43:27,884 INFO L87 Difference]: Start difference. First operand 178 states and 209 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:43:27,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:27,918 INFO L93 Difference]: Finished difference Result 246 states and 284 transitions. [2022-11-20 12:43:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:43:27,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2022-11-20 12:43:27,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:27,920 INFO L225 Difference]: With dead ends: 246 [2022-11-20 12:43:27,921 INFO L226 Difference]: Without dead ends: 153 [2022-11-20 12:43:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:43:27,922 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 20 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 230 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:43:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-20 12:43:27,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 143. [2022-11-20 12:43:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.1090909090909091) internal successors, (122), 113 states have internal predecessors, (122), 18 states have call successors, (18), 11 states have call predecessors, (18), 14 states have return successors, (22), 18 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-20 12:43:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2022-11-20 12:43:27,938 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 62 [2022-11-20 12:43:27,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:27,939 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2022-11-20 12:43:27,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 12:43:27,939 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2022-11-20 12:43:27,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:43:27,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:27,941 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:27,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:28,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:28,150 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -357159951, now seen corresponding path program 1 times [2022-11-20 12:43:28,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:28,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708431675] [2022-11-20 12:43:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:28,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:43:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:43:29,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708431675] [2022-11-20 12:43:29,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708431675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:29,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:29,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:43:29,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731737454] [2022-11-20 12:43:29,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:29,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:43:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:43:29,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:43:29,753 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:43:30,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:30,387 INFO L93 Difference]: Finished difference Result 149 states and 167 transitions. [2022-11-20 12:43:30,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:43:30,391 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 64 [2022-11-20 12:43:30,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:30,392 INFO L225 Difference]: With dead ends: 149 [2022-11-20 12:43:30,393 INFO L226 Difference]: Without dead ends: 147 [2022-11-20 12:43:30,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:43:30,394 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:30,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 137 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:43:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-20 12:43:30,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-20 12:43:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 113 states have (on average 1.1061946902654867) internal successors, (125), 116 states have internal predecessors, (125), 18 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (22), 18 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-20 12:43:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 165 transitions. [2022-11-20 12:43:30,407 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 165 transitions. Word has length 64 [2022-11-20 12:43:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:30,408 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 165 transitions. [2022-11-20 12:43:30,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 8 states have internal predecessors, (31), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 12:43:30,408 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 165 transitions. [2022-11-20 12:43:30,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:43:30,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:30,409 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:30,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:43:30,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:30,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2139655408, now seen corresponding path program 1 times [2022-11-20 12:43:30,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:30,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261575862] [2022-11-20 12:43:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:30,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:43:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:30,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261575862] [2022-11-20 12:43:30,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261575862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:30,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:30,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:43:30,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359048317] [2022-11-20 12:43:30,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:30,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:43:30,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:30,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:43:30,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:43:30,687 INFO L87 Difference]: Start difference. First operand 147 states and 165 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:31,004 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2022-11-20 12:43:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:43:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-11-20 12:43:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:31,005 INFO L225 Difference]: With dead ends: 197 [2022-11-20 12:43:31,006 INFO L226 Difference]: Without dead ends: 145 [2022-11-20 12:43:31,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:43:31,007 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 46 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:31,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 126 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:43:31,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-20 12:43:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2022-11-20 12:43:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 108 states have (on average 1.0833333333333333) internal successors, (117), 111 states have internal predecessors, (117), 18 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (22), 18 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-20 12:43:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2022-11-20 12:43:31,020 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 64 [2022-11-20 12:43:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2022-11-20 12:43:31,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2022-11-20 12:43:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:43:31,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:31,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:31,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:43:31,022 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:31,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1477485396, now seen corresponding path program 1 times [2022-11-20 12:43:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993900649] [2022-11-20 12:43:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:31,811 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:43:31,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:31,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993900649] [2022-11-20 12:43:31,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993900649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:31,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:31,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:43:31,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846578654] [2022-11-20 12:43:31,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:31,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:43:31,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:31,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:43:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:43:31,817 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:32,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:32,441 INFO L93 Difference]: Finished difference Result 162 states and 178 transitions. [2022-11-20 12:43:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:43:32,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-11-20 12:43:32,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:32,443 INFO L225 Difference]: With dead ends: 162 [2022-11-20 12:43:32,443 INFO L226 Difference]: Without dead ends: 160 [2022-11-20 12:43:32,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:43:32,444 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 107 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:32,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 296 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:43:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-20 12:43:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2022-11-20 12:43:32,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 115 states have (on average 1.0782608695652174) internal successors, (124), 119 states have internal predecessors, (124), 18 states have call successors, (18), 12 states have call predecessors, (18), 16 states have return successors, (24), 18 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-20 12:43:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2022-11-20 12:43:32,458 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 64 [2022-11-20 12:43:32,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:32,458 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2022-11-20 12:43:32,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-20 12:43:32,459 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2022-11-20 12:43:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 12:43:32,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:32,460 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:32,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:43:32,460 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:32,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:32,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2116417322, now seen corresponding path program 1 times [2022-11-20 12:43:32,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:32,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843007463] [2022-11-20 12:43:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843007463] [2022-11-20 12:43:34,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843007463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990176671] [2022-11-20 12:43:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:34,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:34,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:34,371 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:34,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:43:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:35,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-20 12:43:35,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:35,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:35,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:35,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:43:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:43:36,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:36,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1492 treesize of output 1444 [2022-11-20 12:43:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:43:37,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990176671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:43:37,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:43:37,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 34 [2022-11-20 12:43:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257444958] [2022-11-20 12:43:37,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:37,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:43:37,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:43:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:43:37,652 INFO L87 Difference]: Start difference. First operand 150 states and 166 transitions. Second operand has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 12:43:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:40,375 INFO L93 Difference]: Finished difference Result 215 states and 242 transitions. [2022-11-20 12:43:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 12:43:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 64 [2022-11-20 12:43:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:40,403 INFO L225 Difference]: With dead ends: 215 [2022-11-20 12:43:40,403 INFO L226 Difference]: Without dead ends: 176 [2022-11-20 12:43:40,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 118 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=358, Invalid=2500, Unknown=4, NotChecked=0, Total=2862 [2022-11-20 12:43:40,408 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 263 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 355 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:40,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 603 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1081 Invalid, 0 Unknown, 355 Unchecked, 1.1s Time] [2022-11-20 12:43:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-20 12:43:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 144. [2022-11-20 12:43:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.0727272727272728) internal successors, (118), 113 states have internal predecessors, (118), 18 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (23), 18 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-20 12:43:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 159 transitions. [2022-11-20 12:43:40,427 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 159 transitions. Word has length 64 [2022-11-20 12:43:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:40,427 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 159 transitions. [2022-11-20 12:43:40,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 12:43:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 159 transitions. [2022-11-20 12:43:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 12:43:40,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:40,428 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 12:43:40,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:43:40,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:40,631 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:40,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:40,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1604664163, now seen corresponding path program 1 times [2022-11-20 12:43:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:40,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105690786] [2022-11-20 12:43:40,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:40,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:42,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:43:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:43:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:43:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:43:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-20 12:43:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105690786] [2022-11-20 12:43:43,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105690786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:43,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100688443] [2022-11-20 12:43:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:43,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:43,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:43,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:43:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:43,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 12:43:43,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:43,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:43,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:43:45,881 INFO L321 Elim1Store]: treesize reduction 13, result has 51.9 percent of original size [2022-11-20 12:43:45,881 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 48 treesize of output 34 [2022-11-20 12:43:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 12:43:46,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:43:46,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 335 [2022-11-20 12:43:47,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100688443] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:47,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:43:47,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 35 [2022-11-20 12:43:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10069428] [2022-11-20 12:43:47,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:43:47,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:43:47,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:43:47,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1679, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:43:47,259 INFO L87 Difference]: Start difference. First operand 144 states and 159 transitions. Second operand has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 12:43:50,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:50,969 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2022-11-20 12:43:50,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-20 12:43:50,975 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 70 [2022-11-20 12:43:50,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:50,979 INFO L225 Difference]: With dead ends: 183 [2022-11-20 12:43:50,979 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 12:43:50,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=389, Invalid=4857, Unknown=10, NotChecked=0, Total=5256 [2022-11-20 12:43:50,984 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 299 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:50,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 672 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1074 Invalid, 0 Unknown, 326 Unchecked, 1.1s Time] [2022-11-20 12:43:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 12:43:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 166. [2022-11-20 12:43:51,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.064516129032258) internal successors, (132), 127 states have internal predecessors, (132), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (29), 23 states have call predecessors, (29), 22 states have call successors, (29) [2022-11-20 12:43:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2022-11-20 12:43:51,009 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 70 [2022-11-20 12:43:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:51,010 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2022-11-20 12:43:51,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 12:43:51,010 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2022-11-20 12:43:51,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:43:51,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:51,011 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:51,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 12:43:51,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:43:51,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:51,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:51,221 INFO L85 PathProgramCache]: Analyzing trace with hash 809840792, now seen corresponding path program 1 times [2022-11-20 12:43:51,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:51,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423809986] [2022-11-20 12:43:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:43:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:43:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:43:54,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:54,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423809986] [2022-11-20 12:43:54,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423809986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:54,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:43:54,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 12:43:54,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493212909] [2022-11-20 12:43:54,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:54,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:43:54,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:54,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:43:54,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:43:54,579 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:43:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:55,844 INFO L93 Difference]: Finished difference Result 207 states and 228 transitions. [2022-11-20 12:43:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:43:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-20 12:43:55,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:55,846 INFO L225 Difference]: With dead ends: 207 [2022-11-20 12:43:55,846 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 12:43:55,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:43:55,847 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 138 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:55,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 165 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:43:55,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 12:43:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-20 12:43:55,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 124 states have (on average 1.0564516129032258) internal successors, (131), 127 states have internal predecessors, (131), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (29), 23 states have call predecessors, (29), 22 states have call successors, (29) [2022-11-20 12:43:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2022-11-20 12:43:55,872 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 68 [2022-11-20 12:43:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:55,873 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2022-11-20 12:43:55,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:43:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2022-11-20 12:43:55,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:43:55,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:55,879 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:43:55,881 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -470022886, now seen corresponding path program 1 times [2022-11-20 12:43:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:55,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377732824] [2022-11-20 12:43:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:43:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:43:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:43:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:43:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:43:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:43:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 12:43:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:43:57,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377732824] [2022-11-20 12:43:57,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377732824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:43:57,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141592426] [2022-11-20 12:43:57,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:57,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:43:57,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:43:57,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:43:57,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:43:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:43:58,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:43:58,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:43:58,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:58,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:43:58,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:43:59,096 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 12:43:59,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2022-11-20 12:43:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:43:59,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:43:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141592426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:43:59,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:43:59,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2022-11-20 12:43:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241393972] [2022-11-20 12:43:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:43:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:43:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:43:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:43:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:43:59,106 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:43:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:43:59,158 INFO L93 Difference]: Finished difference Result 262 states and 286 transitions. [2022-11-20 12:43:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:43:59,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-20 12:43:59,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:43:59,160 INFO L225 Difference]: With dead ends: 262 [2022-11-20 12:43:59,160 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 12:43:59,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:43:59,162 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 14 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:43:59,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 408 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 80 Unchecked, 0.0s Time] [2022-11-20 12:43:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 12:43:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2022-11-20 12:43:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.056) internal successors, (132), 128 states have internal predecessors, (132), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (28), 23 states have call predecessors, (28), 22 states have call successors, (28) [2022-11-20 12:43:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 183 transitions. [2022-11-20 12:43:59,183 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 183 transitions. Word has length 68 [2022-11-20 12:43:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:43:59,183 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 183 transitions. [2022-11-20 12:43:59,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:43:59,184 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 183 transitions. [2022-11-20 12:43:59,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:43:59,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:43:59,186 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:43:59,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 12:43:59,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 12:43:59,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:43:59,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:43:59,401 INFO L85 PathProgramCache]: Analyzing trace with hash -864389672, now seen corresponding path program 1 times [2022-11-20 12:43:59,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:43:59,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434934106] [2022-11-20 12:43:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:43:59,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:43:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:02,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:44:03,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:03,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434934106] [2022-11-20 12:44:03,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434934106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:03,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904024476] [2022-11-20 12:44:03,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:03,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:03,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:03,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:44:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:04,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 12:44:04,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:04,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:04,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:04,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:44:06,064 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:44:06,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:06,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 663 [2022-11-20 12:44:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:44:07,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904024476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:44:07,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:44:07,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 13] total 41 [2022-11-20 12:44:07,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748922255] [2022-11-20 12:44:07,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-20 12:44:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:07,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-20 12:44:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 12:44:07,250 INFO L87 Difference]: Start difference. First operand 167 states and 183 transitions. Second operand has 41 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 33 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-20 12:44:09,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:09,726 INFO L93 Difference]: Finished difference Result 241 states and 264 transitions. [2022-11-20 12:44:09,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 12:44:09,727 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 33 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) Word has length 68 [2022-11-20 12:44:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:09,728 INFO L225 Difference]: With dead ends: 241 [2022-11-20 12:44:09,728 INFO L226 Difference]: Without dead ends: 175 [2022-11-20 12:44:09,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 12:44:09,730 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 191 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 800 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:09,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 853 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 821 Invalid, 0 Unknown, 800 Unchecked, 0.9s Time] [2022-11-20 12:44:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-20 12:44:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 162. [2022-11-20 12:44:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 120 states have (on average 1.0416666666666667) internal successors, (125), 123 states have internal predecessors, (125), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2022-11-20 12:44:09,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 175 transitions. [2022-11-20 12:44:09,753 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 175 transitions. Word has length 68 [2022-11-20 12:44:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 175 transitions. [2022-11-20 12:44:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 33 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-20 12:44:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 175 transitions. [2022-11-20 12:44:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:44:09,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:09,755 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:44:09,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 12:44:09,967 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1584064284, now seen corresponding path program 1 times [2022-11-20 12:44:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:09,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432976494] [2022-11-20 12:44:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:12,959 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 12:44:12,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:12,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432976494] [2022-11-20 12:44:12,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432976494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:12,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:12,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 12:44:12,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131402336] [2022-11-20 12:44:12,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:12,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:44:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:44:12,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:44:12,962 INFO L87 Difference]: Start difference. First operand 162 states and 175 transitions. Second operand has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:44:13,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:13,813 INFO L93 Difference]: Finished difference Result 195 states and 211 transitions. [2022-11-20 12:44:13,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:44:13,813 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-20 12:44:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:13,815 INFO L225 Difference]: With dead ends: 195 [2022-11-20 12:44:13,815 INFO L226 Difference]: Without dead ends: 157 [2022-11-20 12:44:13,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:44:13,816 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:13,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 154 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:44:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-11-20 12:44:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-11-20 12:44:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 116 states have (on average 1.0344827586206897) internal successors, (120), 118 states have internal predecessors, (120), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-20 12:44:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2022-11-20 12:44:13,836 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 68 [2022-11-20 12:44:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:13,837 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2022-11-20 12:44:13,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 12:44:13,837 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2022-11-20 12:44:13,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 12:44:13,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:13,838 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:44:13,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:44:13,839 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2006675293, now seen corresponding path program 1 times [2022-11-20 12:44:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:13,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858719095] [2022-11-20 12:44:13,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:16,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:44:17,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858719095] [2022-11-20 12:44:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858719095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:17,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719334890] [2022-11-20 12:44:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:17,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:17,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:17,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:44:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 12:44:18,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:18,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:18,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:18,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-20 12:44:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:18,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:18,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:44:19,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:44:19,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 54 [2022-11-20 12:44:21,130 INFO L321 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-11-20 12:44:21,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 58 [2022-11-20 12:44:21,233 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:44:21,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:22,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:44:22,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 96 [2022-11-20 12:44:22,805 INFO L321 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2022-11-20 12:44:22,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 74 [2022-11-20 12:44:22,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:44:22,819 INFO L350 Elim1Store]: Elim1 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 50 treesize of output 48 [2022-11-20 12:44:22,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-20 12:44:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2022-11-20 12:44:23,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719334890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:23,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:23,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 49 [2022-11-20 12:44:23,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950161195] [2022-11-20 12:44:23,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:23,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:44:23,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:44:23,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3732, Unknown=0, NotChecked=0, Total=3906 [2022-11-20 12:44:23,265 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:44:28,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:28,014 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2022-11-20 12:44:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 12:44:28,014 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 70 [2022-11-20 12:44:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:28,016 INFO L225 Difference]: With dead ends: 184 [2022-11-20 12:44:28,016 INFO L226 Difference]: Without dead ends: 182 [2022-11-20 12:44:28,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=538, Invalid=9562, Unknown=0, NotChecked=0, Total=10100 [2022-11-20 12:44:28,019 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 99 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:28,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 1118 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1761 Invalid, 0 Unknown, 604 Unchecked, 1.4s Time] [2022-11-20 12:44:28,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-20 12:44:28,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 160. [2022-11-20 12:44:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 119 states have (on average 1.0336134453781514) internal successors, (123), 121 states have internal predecessors, (123), 22 states have call successors, (22), 16 states have call predecessors, (22), 18 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-20 12:44:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 169 transitions. [2022-11-20 12:44:28,041 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 169 transitions. Word has length 70 [2022-11-20 12:44:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:28,041 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 169 transitions. [2022-11-20 12:44:28,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-20 12:44:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 169 transitions. [2022-11-20 12:44:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 12:44:28,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:28,043 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2022-11-20 12:44:28,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:28,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:44:28,254 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:28,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -865864377, now seen corresponding path program 1 times [2022-11-20 12:44:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377878267] [2022-11-20 12:44:28,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:44:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:44:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:44:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:44:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-20 12:44:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377878267] [2022-11-20 12:44:29,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377878267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:29,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:29,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:44:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266331928] [2022-11-20 12:44:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:44:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:29,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:44:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:29,252 INFO L87 Difference]: Start difference. First operand 160 states and 169 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:44:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:29,811 INFO L93 Difference]: Finished difference Result 166 states and 174 transitions. [2022-11-20 12:44:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:44:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2022-11-20 12:44:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:29,813 INFO L225 Difference]: With dead ends: 166 [2022-11-20 12:44:29,813 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 12:44:29,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:44:29,814 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:29,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 151 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:44:29,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 12:44:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 12:44:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 124 states have internal predecessors, (126), 22 states have call successors, (22), 17 states have call predecessors, (22), 19 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-20 12:44:29,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 172 transitions. [2022-11-20 12:44:29,845 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 172 transitions. Word has length 76 [2022-11-20 12:44:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:29,848 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 172 transitions. [2022-11-20 12:44:29,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 12:44:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 172 transitions. [2022-11-20 12:44:29,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-20 12:44:29,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:29,849 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2022-11-20 12:44:29,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 12:44:29,849 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1177486125, now seen corresponding path program 1 times [2022-11-20 12:44:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:29,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272671945] [2022-11-20 12:44:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:29,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:44:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:44:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:44:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:44:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:44:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:30,804 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:44:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:30,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272671945] [2022-11-20 12:44:30,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272671945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:30,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:30,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:44:30,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576504307] [2022-11-20 12:44:30,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:30,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:44:30,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:30,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:44:30,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:44:30,808 INFO L87 Difference]: Start difference. First operand 164 states and 172 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:44:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:31,274 INFO L93 Difference]: Finished difference Result 170 states and 177 transitions. [2022-11-20 12:44:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 12:44:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2022-11-20 12:44:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:31,276 INFO L225 Difference]: With dead ends: 170 [2022-11-20 12:44:31,276 INFO L226 Difference]: Without dead ends: 168 [2022-11-20 12:44:31,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:44:31,277 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:31,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:44:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-20 12:44:31,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-20 12:44:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.032) internal successors, (129), 127 states have internal predecessors, (129), 22 states have call successors, (22), 18 states have call predecessors, (22), 20 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-20 12:44:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2022-11-20 12:44:31,299 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 83 [2022-11-20 12:44:31,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:31,300 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 175 transitions. [2022-11-20 12:44:31,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 12:44:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 175 transitions. [2022-11-20 12:44:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:44:31,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:31,302 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-20 12:44:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 12:44:31,302 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1592962821, now seen corresponding path program 1 times [2022-11-20 12:44:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:31,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708468923] [2022-11-20 12:44:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:32,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:44:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-20 12:44:33,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708468923] [2022-11-20 12:44:33,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708468923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072785891] [2022-11-20 12:44:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:33,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:33,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:33,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:33,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:44:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:34,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 12:44:34,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:34,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:34,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:44:36,184 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2022-11-20 12:44:36,185 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 37 treesize of output 13 [2022-11-20 12:44:36,280 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 12:44:36,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:37,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 614 [2022-11-20 12:44:37,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072785891] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:37,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:37,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 35 [2022-11-20 12:44:37,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302114554] [2022-11-20 12:44:37,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:37,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:44:37,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:37,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:44:37,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1768, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 12:44:37,333 INFO L87 Difference]: Start difference. First operand 168 states and 175 transitions. Second operand has 35 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 10 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-20 12:44:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:39,066 INFO L93 Difference]: Finished difference Result 228 states and 235 transitions. [2022-11-20 12:44:39,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 12:44:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 10 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 82 [2022-11-20 12:44:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:39,068 INFO L225 Difference]: With dead ends: 228 [2022-11-20 12:44:39,068 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 12:44:39,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 110 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=243, Invalid=3539, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 12:44:39,071 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 35 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 677 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:39,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 862 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 485 Invalid, 0 Unknown, 677 Unchecked, 0.5s Time] [2022-11-20 12:44:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 12:44:39,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 157. [2022-11-20 12:44:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 118 states have (on average 1.0254237288135593) internal successors, (121), 119 states have internal predecessors, (121), 20 states have call successors, (20), 17 states have call predecessors, (20), 18 states have return successors, (21), 20 states have call predecessors, (21), 19 states have call successors, (21) [2022-11-20 12:44:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 162 transitions. [2022-11-20 12:44:39,102 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 162 transitions. Word has length 82 [2022-11-20 12:44:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:39,102 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 162 transitions. [2022-11-20 12:44:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.0) internal successors, (93), 28 states have internal predecessors, (93), 10 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-20 12:44:39,103 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 162 transitions. [2022-11-20 12:44:39,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-20 12:44:39,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:39,109 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2022-11-20 12:44:39,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:39,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:39,325 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:39,326 INFO L85 PathProgramCache]: Analyzing trace with hash 896566141, now seen corresponding path program 1 times [2022-11-20 12:44:39,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:39,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039349056] [2022-11-20 12:44:39,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:39,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:44:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 12:44:40,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:40,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039349056] [2022-11-20 12:44:40,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039349056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:40,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:40,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 12:44:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810787848] [2022-11-20 12:44:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:40,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:44:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:44:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:44:40,617 INFO L87 Difference]: Start difference. First operand 157 states and 162 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 12:44:41,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:41,148 INFO L93 Difference]: Finished difference Result 163 states and 167 transitions. [2022-11-20 12:44:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:44:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2022-11-20 12:44:41,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:41,150 INFO L225 Difference]: With dead ends: 163 [2022-11-20 12:44:41,150 INFO L226 Difference]: Without dead ends: 159 [2022-11-20 12:44:41,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:44:41,151 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:41,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 132 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:44:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-20 12:44:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2022-11-20 12:44:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 17 states have call successors, (17), 15 states have call predecessors, (17), 16 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-20 12:44:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2022-11-20 12:44:41,170 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 82 [2022-11-20 12:44:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:41,170 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2022-11-20 12:44:41,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 12:44:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2022-11-20 12:44:41,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-20 12:44:41,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:41,172 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2022-11-20 12:44:41,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 12:44:41,173 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:41,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -852279920, now seen corresponding path program 1 times [2022-11-20 12:44:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:41,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798815325] [2022-11-20 12:44:41,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:41,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:44:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:44:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:44:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:44:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:44:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 12:44:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:44:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 12:44:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-20 12:44:43,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:43,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798815325] [2022-11-20 12:44:43,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798815325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:43,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643467812] [2022-11-20 12:44:43,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:43,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:44:43,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:44:43,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:44:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:44,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:44:44,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:44:44,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:44,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:44:44,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-20 12:44:45,575 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-20 12:44:45,575 INFO L350 Elim1Store]: Elim1 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 34 treesize of output 14 [2022-11-20 12:44:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 12:44:45,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:44:45,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 728 treesize of output 704 [2022-11-20 12:44:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643467812] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:44:46,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:44:46,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2022-11-20 12:44:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115694239] [2022-11-20 12:44:46,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:44:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:44:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:44:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:44:46,434 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:44:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:49,112 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2022-11-20 12:44:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:44:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 100 [2022-11-20 12:44:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:49,113 INFO L225 Difference]: With dead ends: 204 [2022-11-20 12:44:49,113 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 12:44:49,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=214, Invalid=2042, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 12:44:49,115 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 107 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:49,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 506 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 740 Invalid, 0 Unknown, 296 Unchecked, 0.7s Time] [2022-11-20 12:44:49,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 12:44:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-20 12:44:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.0) internal successors, (77), 77 states have internal predecessors, (77), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-20 12:44:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-11-20 12:44:49,133 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2022-11-20 12:44:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:49,133 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-11-20 12:44:49,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:44:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-11-20 12:44:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 12:44:49,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:44:49,135 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2022-11-20 12:44:49,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:44:49,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:44:49,346 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:44:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:44:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash 534230128, now seen corresponding path program 1 times [2022-11-20 12:44:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:44:49,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465245895] [2022-11-20 12:44:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:44:49,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:44:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:51,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:44:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:51,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:44:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:44:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:44:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 12:44:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:44:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:44:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:44:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:44:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 12:44:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:44:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:44:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:44:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:44:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-20 12:44:52,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:44:52,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465245895] [2022-11-20 12:44:52,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465245895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:44:52,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:44:52,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-20 12:44:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950870354] [2022-11-20 12:44:52,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:44:52,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:44:52,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:44:52,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:44:52,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:44:52,336 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 8 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 12:44:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:44:53,137 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2022-11-20 12:44:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:44:53,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 8 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 112 [2022-11-20 12:44:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:44:53,138 INFO L225 Difference]: With dead ends: 105 [2022-11-20 12:44:53,138 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:44:53,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:44:53,139 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 72 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:44:53,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 166 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:44:53,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:44:53,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:44:53,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:44:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:44:53,141 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-11-20 12:44:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:44:53,141 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:44:53,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 8 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-20 12:44:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:44:53,141 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:44:53,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:44:53,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 12:44:53,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:44:56,622 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-20 12:44:56,622 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2022-11-20 12:44:56,622 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L895 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-20 12:44:56,623 INFO L902 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7375 7381) the Hoare annotation is: true [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-3(line 7377) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-1(line 7377) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377(lines 7377 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-7(lines 7377 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-6(lines 7377 7378) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-4(lines 7377 7378) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-11(lines 7377 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point L7377-9(lines 7377 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7375 7381) no Hoare annotation was computed. [2022-11-20 12:44:56,623 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7375 7381) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380-2(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380-6(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380-4(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380-3(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L7380-8(line 7380) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-20 12:44:56,624 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayFINAL(lines 8203 8216) no Hoare annotation was computed. [2022-11-20 12:44:56,625 INFO L899 garLoopResultBuilder]: For program point L8204-1(line 8204) no Hoare annotation was computed. [2022-11-20 12:44:56,625 INFO L895 garLoopResultBuilder]: At program point L8204(line 8204) the Hoare annotation is: (or (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (or (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= aws_byte_buf_from_array_~bytes.offset 0)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|)) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2022-11-20 12:44:56,625 INFO L895 garLoopResultBuilder]: At program point L8214(line 8214) the Hoare annotation is: (or (let ((.cse7 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse9 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8))) (let ((.cse1 (select .cse7 .cse9)) (.cse8 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse5 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse4 (= (select .cse5 .cse9) 0)) (.cse6 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse3 (select .cse8 |aws_byte_buf_from_array_~#buf~1.offset|)) (.cse0 (= .cse1 0)) (.cse2 (select .cse8 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16)))) (and (or .cse0 (and (< 0 (mod |aws_byte_buf_from_array_#in~len| 18446744073709551616)) (= .cse1 |aws_byte_buf_from_array_#in~bytes.base|))) (= .cse2 .cse3) (or .cse4 (not (= 0 |aws_byte_buf_from_array_#in~bytes.offset|))) (= (select .cse5 .cse6) 0) (or (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= aws_byte_buf_from_array_~bytes.offset 0)) (or .cse4 (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse3) 18446744073709551616))))) (= (select .cse7 .cse6) 0) (= |aws_byte_buf_from_array_~#buf~1.offset| 0) (not (= |aws_byte_buf_from_array_~#buf~1.base| 0)) (= |aws_byte_buf_from_array_#in~len| .cse3) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|) (or (not .cse0) (<= .cse2 (* 18446744073709551616 (div .cse2 18446744073709551616)))))))) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2022-11-20 12:44:56,625 INFO L895 garLoopResultBuilder]: At program point aws_byte_buf_from_arrayENTRY(lines 8203 8216) the Hoare annotation is: (or (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2022-11-20 12:44:56,625 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayEXIT(lines 8203 8216) no Hoare annotation was computed. [2022-11-20 12:44:56,625 INFO L899 garLoopResultBuilder]: For program point L8214-2(line 8214) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L895 garLoopResultBuilder]: At program point L8214-1(line 8214) the Hoare annotation is: (let ((.cse15 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse13 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse17 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8)) (.cse16 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse14 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse12 (select .cse16 |aws_byte_buf_from_array_~#buf~1.offset|)) (.cse8 (select .cse13 .cse17)) (.cse4 (= (select .cse15 .cse17) 0))) (let ((.cse0 (or (<= .cse12 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse12) 18446744073709551616)))) (and (= .cse8 0) .cse4))) (.cse1 (= (select .cse16 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16)) .cse12)) (.cse5 (= (select .cse15 .cse14) 0)) (.cse6 (= (select .cse13 .cse14) 0)) (.cse7 (= |aws_byte_buf_from_array_~#buf~1.offset| 0)) (.cse9 (not (= |aws_byte_buf_from_array_~#buf~1.base| 0))) (.cse10 (= |aws_byte_buf_from_array_#in~len| .cse12)) (.cse11 (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|)) (.cse3 (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) (or (let ((.cse2 (= aws_byte_buf_from_array_~bytes.offset 0))) (and .cse0 .cse1 (or (not .cse2) .cse3) (or .cse4 (not (= 0 |aws_byte_buf_from_array_#in~bytes.offset|))) .cse5 (or (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) .cse2) (<= |aws_byte_buf_from_array_#t~ret1045| 1) .cse6 (<= 1 |aws_byte_buf_from_array_#t~ret1045|) .cse7 (= .cse8 |aws_byte_buf_from_array_#in~bytes.base|) .cse9 (not (= aws_byte_buf_from_array_~bytes.base 0)) .cse10 .cse11)) (and .cse0 (= |aws_byte_buf_from_array_#t~ret1045| 1) .cse1 .cse5 .cse6 (<= 0 (+ |aws_byte_buf_from_array_#in~len| (* (div (- |aws_byte_buf_from_array_#in~len|) 18446744073709551616) 18446744073709551616))) .cse7 .cse9 .cse10 .cse11 .cse3) (= |aws_byte_buf_from_array_#in~bytes.base| 0))))) [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point L8962-1(line 8962) no Hoare annotation was computed. [2022-11-20 12:44:56,626 INFO L899 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2022-11-20 12:44:56,627 INFO L895 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse0 .cse7))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (= .cse2 0)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse5 (select .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (or (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse3) (= (select .cse4 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or (<= .cse5 (+ 18446744073709551615 (* (div (+ (- 1) .cse5) 18446744073709551616) 18446744073709551616))) .cse3) (= (select .cse6 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse4 .cse7) 0) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0))))) [2022-11-20 12:44:56,627 INFO L895 garLoopResultBuilder]: At program point L8971(lines 8971 8973) the Hoare annotation is: (let ((.cse19 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse21 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse20 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (select .cse19 .cse21)) (.cse17 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse9 (= (select .cse17 .cse21) 0)) (.cse12 (= .cse14 0)) (.cse16 (select .cse20 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse15 (select .cse20 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse18 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse19 .cse18) 0)) (.cse2 (<= .cse16 .cse15)) (.cse3 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.offset| 0)) (.cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.base| 0)) (.cse5 (= (select .cse17 .cse18) 0)) (.cse6 (or (<= .cse16 (+ 18446744073709551615 (* (div (+ (- 1) .cse16) 18446744073709551616) 18446744073709551616))) (and .cse9 .cse12))) (.cse7 (= .cse15 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse10 (= .cse16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse11 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse13 (<= .cse15 (+ (* (div .cse16 18446744073709551616) 18446744073709551616) 18446744073709551615)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse6 .cse7 .cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse14) .cse9 .cse10 .cse11 .cse13)))))) [2022-11-20 12:44:56,627 INFO L899 garLoopResultBuilder]: For program point L8971-1(lines 8971 8973) no Hoare annotation was computed. [2022-11-20 12:44:56,627 INFO L895 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) [2022-11-20 12:44:56,627 INFO L899 garLoopResultBuilder]: For program point L8965-1(line 8965) no Hoare annotation was computed. [2022-11-20 12:44:56,627 INFO L895 garLoopResultBuilder]: At program point L8969(line 8969) the Hoare annotation is: (let ((.cse17 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse11 (select .cse17 .cse14)) (.cse15 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse12 (select .cse15 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse10 (= .cse11 0)) (.cse13 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse17 .cse16) 0)) (.cse2 (= (select .cse13 .cse16) 0)) (.cse3 (or (<= .cse12 (+ 18446744073709551615 (* (div (+ (- 1) .cse12) 18446744073709551616) 18446744073709551616))) .cse10)) (.cse4 (= (select .cse15 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse5 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse6 (= (select .cse13 .cse14) 0)) (.cse7 (= .cse12 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1202#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 .cse5 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse11) .cse6 .cse7 .cse8 .cse9)))))) [2022-11-20 12:44:56,627 INFO L899 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point L8969-1(line 8969) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L895 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse0 .cse7))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (= .cse2 0)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse5 (select .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (or (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse3) (= (select .cse4 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or (<= .cse5 (+ 18446744073709551615 (* (div (+ (- 1) .cse5) 18446744073709551616) 18446744073709551616))) .cse3) (= (select .cse6 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse4 .cse7) 0) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0))))) [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point L8959(lines 8959 8977) no Hoare annotation was computed. [2022-11-20 12:44:56,628 INFO L902 garLoopResultBuilder]: At program point L8978(line 8978) the Hoare annotation is: true [2022-11-20 12:44:56,628 INFO L899 garLoopResultBuilder]: For program point L8974-2(lines 8974 8976) no Hoare annotation was computed. [2022-11-20 12:44:56,629 INFO L895 garLoopResultBuilder]: At program point L8970(line 8970) the Hoare annotation is: (let ((.cse17 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse11 (select .cse17 .cse14)) (.cse15 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse12 (select .cse15 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse10 (= .cse11 0)) (.cse13 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse17 .cse16) 0)) (.cse2 (= (select .cse13 .cse16) 0)) (.cse3 (or (<= .cse12 (+ 18446744073709551615 (* (div (+ (- 1) .cse12) 18446744073709551616) 18446744073709551616))) .cse10)) (.cse4 (= (select .cse15 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse5 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse6 (= (select .cse13 .cse14) 0)) (.cse7 (= .cse12 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1203#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 .cse5 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse11) .cse6 .cse7 .cse8 .cse9)))))) [2022-11-20 12:44:56,629 INFO L899 garLoopResultBuilder]: For program point L8974(lines 8974 8976) no Hoare annotation was computed. [2022-11-20 12:44:56,629 INFO L895 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse0 .cse7))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (= .cse2 0)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse5 (select .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (= |ULTIMATE.start_assert_bytes_match_#t~mem585#1| |ULTIMATE.start_assert_bytes_match_#t~mem584#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (or (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse3) (= (select .cse4 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or (<= .cse5 (+ 18446744073709551615 (* (div (+ (- 1) .cse5) 18446744073709551616) 18446744073709551616))) .cse3) (= (select .cse6 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse4 .cse7) 0) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0))))) [2022-11-20 12:44:56,629 INFO L902 garLoopResultBuilder]: At program point L8962(line 8962) the Hoare annotation is: true [2022-11-20 12:44:56,629 INFO L899 garLoopResultBuilder]: For program point L8970-1(line 8970) no Hoare annotation was computed. [2022-11-20 12:44:56,629 INFO L895 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: (let ((.cse0 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse6 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse0 .cse7))) (let ((.cse1 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse3 (= .cse2 0)) (.cse4 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse5 (select .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse0 .cse1) 0) (or (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse3) (= (select .cse4 .cse1) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or (<= .cse5 (+ 18446744073709551615 (* (div (+ (- 1) .cse5) 18446744073709551616) 18446744073709551616))) .cse3) (= (select .cse6 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse4 .cse7) 0) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (not (= |ULTIMATE.start_assert_bytes_match_~a#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0))))) [2022-11-20 12:44:56,630 INFO L895 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: (let ((.cse21 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse12 (select .cse21 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse6 (select .cse21 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse18 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse19 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse17 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse20 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (= (select .cse17 .cse20) 0)) (.cse1 (= (select .cse19 .cse20) 0)) (.cse2 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse3 (= (select .cse19 .cse18) 0)) (.cse4 (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (select .cse17 .cse18)) (.cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse9 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_67| Int)) (let ((.cse15 (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_67|))) (let ((.cse16 (select .cse15 16))) (and (= (select .cse15 0) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= .cse16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= .cse12 .cse16))))))) (or (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) .cse0 .cse1 .cse2 .cse3 .cse4 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_74| Int)) (let ((.cse5 (select (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_74|) 0))) (and (<= .cse5 (* 18446744073709551616 (div .cse5 18446744073709551616))) (= .cse5 .cse6)))) .cse7 (= .cse8 0) .cse9) (and .cse0 .cse1 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse8) .cse3 .cse4 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_59| Int)) (let ((.cse10 (select (select |#memory_$Pointer$.base| |v_aws_byte_buf_from_array_~#buf~1.base_59|) 8))) (and (= .cse10 .cse8) (not (= .cse10 0))))) .cse7 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_49| Int)) (let ((.cse14 (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_49|))) (let ((.cse11 (select .cse14 0)) (.cse13 (select .cse14 16))) (and (not (= (mod .cse11 18446744073709551616) 0)) (= .cse12 .cse13) (= .cse11 .cse13))))) .cse9))))) [2022-11-20 12:44:56,630 INFO L895 garLoopResultBuilder]: At program point L8968-1(line 8968) the Hoare annotation is: (let ((.cse18 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse12 (select .cse18 .cse15)) (.cse16 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse13 (select .cse16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse11 (= .cse12 0)) (.cse14 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse17 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse18 .cse17) 0)) (.cse2 (= (select .cse14 .cse17) 0)) (.cse3 (or (<= .cse13 (+ 18446744073709551615 (* (div (+ (- 1) .cse13) 18446744073709551616) 18446744073709551616))) .cse11)) (.cse4 (= (select .cse16 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse5 (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1201#1| 1)) (.cse6 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse7 (= (select .cse14 .cse15) 0)) (.cse8 (= .cse13 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse9 (<= 1 |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1201#1|)) (.cse10 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse12) .cse7 .cse8 .cse9 .cse10)))))) [2022-11-20 12:44:56,631 INFO L899 garLoopResultBuilder]: For program point L8968-2(line 8968) no Hoare annotation was computed. [2022-11-20 12:44:56,631 INFO L899 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2022-11-20 12:44:56,631 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-20 12:44:56,631 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-20 12:44:56,631 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-20 12:44:56,631 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-20 12:44:56,632 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-20 12:44:56,632 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-20 12:44:56,635 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:44:56,637 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:44:56,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:44:56 BoogieIcfgContainer [2022-11-20 12:44:56,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:44:56,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:44:56,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:44:56,649 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:44:56,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:42:27" (3/4) ... [2022-11-20 12:44:56,652 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:44:56,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-20 12:44:56,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_from_array [2022-11-20 12:44:56,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-11-20 12:44:56,659 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2022-11-20 12:44:56,660 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 12:44:56,660 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 12:44:56,683 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2022-11-20 12:44:56,684 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2022-11-20 12:44:56,685 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-20 12:44:56,686 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 12:44:56,687 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 12:44:56,688 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:44:56,689 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:44:56,690 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:44:57,336 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:44:57,336 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:44:57,336 INFO L158 Benchmark]: Toolchain (without parser) took 155689.55ms. Allocated memory was 148.9MB in the beginning and 943.7MB in the end (delta: 794.8MB). Free memory was 96.5MB in the beginning and 719.1MB in the end (delta: -622.6MB). Peak memory consumption was 173.8MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,337 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:44:57,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3498.22ms. Allocated memory was 148.9MB in the beginning and 192.9MB in the end (delta: 44.0MB). Free memory was 96.5MB in the beginning and 81.1MB in the end (delta: 15.4MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 229.97ms. Allocated memory is still 192.9MB. Free memory was 81.1MB in the beginning and 134.9MB in the end (delta: -53.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,337 INFO L158 Benchmark]: Boogie Preprocessor took 71.16ms. Allocated memory is still 192.9MB. Free memory was 134.9MB in the beginning and 128.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,338 INFO L158 Benchmark]: RCFGBuilder took 1917.77ms. Allocated memory was 192.9MB in the beginning and 249.6MB in the end (delta: 56.6MB). Free memory was 128.6MB in the beginning and 188.6MB in the end (delta: -60.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,338 INFO L158 Benchmark]: TraceAbstraction took 149273.16ms. Allocated memory was 249.6MB in the beginning and 943.7MB in the end (delta: 694.2MB). Free memory was 187.7MB in the beginning and 848.0MB in the end (delta: -660.3MB). Peak memory consumption was 569.7MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,338 INFO L158 Benchmark]: Witness Printer took 687.68ms. Allocated memory is still 943.7MB. Free memory was 848.0MB in the beginning and 719.1MB in the end (delta: 129.0MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. [2022-11-20 12:44:57,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 62.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3498.22ms. Allocated memory was 148.9MB in the beginning and 192.9MB in the end (delta: 44.0MB). Free memory was 96.5MB in the beginning and 81.1MB in the end (delta: 15.4MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 229.97ms. Allocated memory is still 192.9MB. Free memory was 81.1MB in the beginning and 134.9MB in the end (delta: -53.8MB). Peak memory consumption was 22.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.16ms. Allocated memory is still 192.9MB. Free memory was 134.9MB in the beginning and 128.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1917.77ms. Allocated memory was 192.9MB in the beginning and 249.6MB in the end (delta: 56.6MB). Free memory was 128.6MB in the beginning and 188.6MB in the end (delta: -60.0MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * TraceAbstraction took 149273.16ms. Allocated memory was 249.6MB in the beginning and 943.7MB in the end (delta: 694.2MB). Free memory was 187.7MB in the beginning and 848.0MB in the end (delta: -660.3MB). Peak memory consumption was 569.7MB. Max. memory is 16.1GB. * Witness Printer took 687.68ms. Allocated memory is still 943.7MB. Free memory was 848.0MB in the beginning and 719.1MB in the end (delta: 129.0MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 149.2s, OverallIterations: 33, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 41.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4014 SdHoareTripleChecker+Valid, 19.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3838 mSDsluCounter, 11548 SdHoareTripleChecker+Invalid, 16.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4978 IncrementalHoareTripleChecker+Unchecked, 10026 mSDsCounter, 934 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18354 IncrementalHoareTripleChecker+Invalid, 24266 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 934 mSolverCounterUnsat, 1522 mSDtfsCounter, 18354 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2456 GetRequests, 1502 SyntacticMatches, 63 SemanticMatches, 891 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9140 ImplicationChecksByTransitivity, 43.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=14, InterpolantAutomatonStates: 559, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 33 MinimizatonAttempts, 421 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 237 PreInvPairs, 260 NumberOfFragments, 2113 HoareAnnotationTreeSize, 237 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 22 FomulaSimplificationsInter, 62164 FormulaSimplificationTreeSizeReductionInter, 3.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 10.1s SatisfiabilityAnalysisTime, 86.3s InterpolantComputationTime, 2824 NumberOfCodeBlocks, 2824 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 3031 ConstructedInterpolants, 344 QuantifiedInterpolants, 26640 SizeOfPredicates, 177 NumberOfNonLiveVariables, 30138 ConjunctsInSsa, 557 ConjunctsInUnsatCore, 49 InterpolantComputations, 24 PerfectInterpolantSequences, 877/1146 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8978]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 12:44:57,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e690bb93-c73b-4062-bd08-3799ad850b20/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE