./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G --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 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:29:42,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:29:42,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:29:42,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:29:42,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:29:42,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:29:42,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:29:42,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:29:42,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:29:42,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:29:42,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:29:42,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:29:42,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:29:42,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:29:42,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:29:42,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:29:42,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:29:42,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:29:42,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:29:42,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:29:42,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:29:42,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:29:42,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:29:42,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:29:42,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:29:42,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:29:42,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:29:42,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:29:42,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:29:42,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:29:42,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:29:42,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:29:42,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:29:42,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:29:42,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:29:42,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:29:42,823 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:29:42,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:29:42,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:29:42,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:29:42,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:29:42,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 12:29:42,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:29:42,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:29:42,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:29:42,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:29:42,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:29:42,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:29:42,856 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:29:42,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:29:42,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:29:42,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:29:42,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:29:42,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:29:42,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:29:42,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:29:42,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:29:42,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:29:42,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:29:42,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:29:42,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:29:42,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:29:42,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:29:42,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:29:42,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:29:42,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:29:42,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:29:42,860 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:29:42,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:29:42,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:29:42,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:29:42,861 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_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa [2021-11-23 12:29:43,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:29:43,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:29:43,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:29:43,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:29:43,149 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:29:43,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2021-11-23 12:29:43,254 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/data/9838ea9ff/8091de0be9c64c8ca9b2555b2be6e6cc/FLAGa69cd2c7c [2021-11-23 12:29:44,075 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:29:44,075 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i [2021-11-23 12:29:44,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/data/9838ea9ff/8091de0be9c64c8ca9b2555b2be6e6cc/FLAGa69cd2c7c [2021-11-23 12:29:44,572 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/data/9838ea9ff/8091de0be9c64c8ca9b2555b2be6e6cc [2021-11-23 12:29:44,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:29:44,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:29:44,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:29:44,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:29:44,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:29:44,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:29:44" (1/1) ... [2021-11-23 12:29:44,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390235a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:44, skipping insertion in model container [2021-11-23 12:29:44,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:29:44" (1/1) ... [2021-11-23 12:29:44,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:29:44,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:29:45,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2021-11-23 12:29:45,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2021-11-23 12:29:46,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,184 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,185 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,186 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,187 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:46,687 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 12:29:46,688 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 12:29:46,690 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 12:29:46,691 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 12:29:46,694 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 12:29:46,695 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 12:29:46,696 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 12:29:46,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 12:29:46,698 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 12:29:46,699 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 12:29:46,919 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 12:29:47,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:29:47,311 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:29:47,325 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2021-11-23 12:29:47,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/sv-benchmarks/c/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2021-11-23 12:29:47,368 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,369 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,370 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,380 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,384 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,388 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,437 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 12:29:47,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 12:29:47,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 12:29:47,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 12:29:47,441 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 12:29:47,442 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 12:29:47,458 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 12:29:47,459 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 12:29:47,459 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 12:29:47,460 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 12:29:47,486 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 12:29:47,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,608 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 12:29:47,667 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:29:47,961 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:29:47,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47 WrapperNode [2021-11-23 12:29:47,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:29:47,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:29:47,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:29:47,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:29:47,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,256 INFO L137 Inliner]: procedures = 690, calls = 2737, calls flagged for inlining = 1035, calls inlined = 41, statements flattened = 1020 [2021-11-23 12:29:48,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:29:48,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:29:48,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:29:48,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:29:48,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:29:48,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:29:48,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:29:48,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:29:48,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (1/1) ... [2021-11-23 12:29:48,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:29:48,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:29:48,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:29:48,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:29:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:29:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2021-11-23 12:29:48,495 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 12:29:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 12:29:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:29:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 12:29:48,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:29:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 12:29:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:29:48,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:29:48,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 12:29:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 12:29:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:29:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 12:29:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:29:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2021-11-23 12:29:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:29:48,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:29:48,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:29:50,406 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !true; [2021-11-23 12:29:50,406 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:29:50,413 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:29:50,414 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:29:50,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:29:50 BoogieIcfgContainer [2021-11-23 12:29:50,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:29:50,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:29:50,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:29:50,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:29:50,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:29:44" (1/3) ... [2021-11-23 12:29:50,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f9c987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:29:50, skipping insertion in model container [2021-11-23 12:29:50,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:29:47" (2/3) ... [2021-11-23 12:29:50,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f9c987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:29:50, skipping insertion in model container [2021-11-23 12:29:50,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:29:50" (3/3) ... [2021-11-23 12:29:50,426 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i [2021-11-23 12:29:50,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:29:50,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 12:29:50,503 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:29:50,510 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:29:50,511 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 12:29:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 85 states have (on average 1.411764705882353) internal successors, (120), 91 states have internal predecessors, (120), 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) [2021-11-23 12:29:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 12:29:50,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:50,536 INFO L514 BasicCegarLoop]: trace 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] [2021-11-23 12:29:50,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:50,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2112400035, now seen corresponding path program 1 times [2021-11-23 12:29:50,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:50,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218762312] [2021-11-23 12:29:50,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:50,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:51,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218762312] [2021-11-23 12:29:51,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218762312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:51,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:51,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:29:51,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999398993] [2021-11-23 12:29:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:51,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:29:51,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:29:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:29:51,127 INFO L87 Difference]: Start difference. First operand has 92 states, 85 states have (on average 1.411764705882353) internal successors, (120), 91 states have internal predecessors, (120), 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) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-11-23 12:29:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:51,153 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2021-11-23 12:29:51,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:29:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) Word has length 25 [2021-11-23 12:29:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:51,169 INFO L225 Difference]: With dead ends: 179 [2021-11-23 12:29:51,169 INFO L226 Difference]: Without dead ends: 86 [2021-11-23 12:29:51,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:29:51,176 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:51,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:51,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-23 12:29:51,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-11-23 12:29:51,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.2125) internal successors, (97), 85 states have internal predecessors, (97), 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) [2021-11-23 12:29:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2021-11-23 12:29:51,219 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 25 [2021-11-23 12:29:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:51,219 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2021-11-23 12:29:51,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2021-11-23 12:29:51,220 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2021-11-23 12:29:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 12:29:51,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:51,221 INFO L514 BasicCegarLoop]: trace 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] [2021-11-23 12:29:51,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:29:51,222 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1235816865, now seen corresponding path program 1 times [2021-11-23 12:29:51,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:51,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162153451] [2021-11-23 12:29:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:51,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:51,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:51,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162153451] [2021-11-23 12:29:51,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162153451] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:51,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:51,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:29:51,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568314798] [2021-11-23 12:29:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:51,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:29:51,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:29:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:29:51,497 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-23 12:29:51,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:51,563 INFO L93 Difference]: Finished difference Result 183 states and 206 transitions. [2021-11-23 12:29:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:29:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) Word has length 25 [2021-11-23 12:29:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:51,566 INFO L225 Difference]: With dead ends: 183 [2021-11-23 12:29:51,566 INFO L226 Difference]: Without dead ends: 152 [2021-11-23 12:29:51,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:29:51,568 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 147 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:51,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 439 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:51,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-23 12:29:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 89. [2021-11-23 12:29:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.2048192771084338) internal successors, (100), 88 states have internal predecessors, (100), 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) [2021-11-23 12:29:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 100 transitions. [2021-11-23 12:29:51,583 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 100 transitions. Word has length 25 [2021-11-23 12:29:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:51,583 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 100 transitions. [2021-11-23 12:29:51,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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) [2021-11-23 12:29:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 100 transitions. [2021-11-23 12:29:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 12:29:51,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:51,585 INFO L514 BasicCegarLoop]: trace 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] [2021-11-23 12:29:51,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:29:51,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 293799461, now seen corresponding path program 1 times [2021-11-23 12:29:51,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:51,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881129644] [2021-11-23 12:29:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:51,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:51,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:51,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:51,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881129644] [2021-11-23 12:29:51,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881129644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:51,805 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:51,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:29:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515795411] [2021-11-23 12:29:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:29:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:29:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:29:51,807 INFO L87 Difference]: Start difference. First operand 89 states and 100 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 12:29:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:51,841 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2021-11-23 12:29:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:29:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) Word has length 27 [2021-11-23 12:29:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:51,843 INFO L225 Difference]: With dead ends: 120 [2021-11-23 12:29:51,843 INFO L226 Difference]: Without dead ends: 89 [2021-11-23 12:29:51,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:29:51,845 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 1 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:51,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:51,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-11-23 12:29:51,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2021-11-23 12:29:51,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.1875) internal successors, (95), 85 states have internal predecessors, (95), 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) [2021-11-23 12:29:51,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-11-23 12:29:51,855 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 27 [2021-11-23 12:29:51,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:51,855 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-11-23 12:29:51,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 12:29:51,856 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-11-23 12:29:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 12:29:51,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:51,857 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:51,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:29:51,858 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash 659600795, now seen corresponding path program 1 times [2021-11-23 12:29:51,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:51,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544374272] [2021-11-23 12:29:51,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:51,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:52,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:52,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:52,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544374272] [2021-11-23 12:29:52,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544374272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:52,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:52,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:29:52,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690357249] [2021-11-23 12:29:52,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:52,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:29:52,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:52,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:29:52,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:29:52,196 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-23 12:29:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:52,264 INFO L93 Difference]: Finished difference Result 232 states and 260 transitions. [2021-11-23 12:29:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:29:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) Word has length 46 [2021-11-23 12:29:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:52,271 INFO L225 Difference]: With dead ends: 232 [2021-11-23 12:29:52,271 INFO L226 Difference]: Without dead ends: 185 [2021-11-23 12:29:52,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:29:52,278 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 168 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:52,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 410 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:52,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-23 12:29:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 89. [2021-11-23 12:29:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.180722891566265) internal successors, (98), 88 states have internal predecessors, (98), 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) [2021-11-23 12:29:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2021-11-23 12:29:52,308 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 46 [2021-11-23 12:29:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:52,313 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2021-11-23 12:29:52,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2021-11-23 12:29:52,314 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2021-11-23 12:29:52,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 12:29:52,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:52,318 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:52,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:29:52,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:52,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash 20122135, now seen corresponding path program 1 times [2021-11-23 12:29:52,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:52,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393756599] [2021-11-23 12:29:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:52,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:52,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:52,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393756599] [2021-11-23 12:29:52,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393756599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:52,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:52,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 12:29:52,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647046235] [2021-11-23 12:29:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:52,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:29:52,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:52,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:29:52,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:29:52,617 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-23 12:29:52,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:52,758 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2021-11-23 12:29:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:29:52,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) Word has length 48 [2021-11-23 12:29:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:52,761 INFO L225 Difference]: With dead ends: 141 [2021-11-23 12:29:52,761 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 12:29:52,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:29:52,771 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 12 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:52,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 530 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 12:29:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-23 12:29:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 83 states have internal predecessors, (91), 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) [2021-11-23 12:29:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-11-23 12:29:52,787 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 48 [2021-11-23 12:29:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:52,789 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-11-23 12:29:52,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-23 12:29:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-11-23 12:29:52,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:29:52,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:52,794 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:52,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:29:52,794 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:52,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1019144308, now seen corresponding path program 1 times [2021-11-23 12:29:52,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:52,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944797945] [2021-11-23 12:29:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:52,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:53,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:53,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944797945] [2021-11-23 12:29:53,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944797945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:53,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:53,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 12:29:53,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415771886] [2021-11-23 12:29:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:53,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:29:53,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:29:53,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:29:53,142 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-11-23 12:29:53,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:53,304 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2021-11-23 12:29:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:29:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) Word has length 49 [2021-11-23 12:29:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:53,306 INFO L225 Difference]: With dead ends: 123 [2021-11-23 12:29:53,306 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 12:29:53,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:29:53,307 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 329 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:53,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 392 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:29:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 12:29:53,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-23 12:29:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 83 states have internal predecessors, (90), 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) [2021-11-23 12:29:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2021-11-23 12:29:53,330 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 49 [2021-11-23 12:29:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:53,331 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2021-11-23 12:29:53,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 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) [2021-11-23 12:29:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2021-11-23 12:29:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 12:29:53,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:53,333 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:53,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:29:53,334 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:53,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:53,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1500815626, now seen corresponding path program 1 times [2021-11-23 12:29:53,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:53,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288554345] [2021-11-23 12:29:53,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:53,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:54,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:54,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:54,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288554345] [2021-11-23 12:29:54,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288554345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:54,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:54,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-23 12:29:54,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605791533] [2021-11-23 12:29:54,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:54,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 12:29:54,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:54,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 12:29:54,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-23 12:29:54,704 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2021-11-23 12:29:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:57,637 INFO L93 Difference]: Finished difference Result 201 states and 218 transitions. [2021-11-23 12:29:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:29:57,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) Word has length 49 [2021-11-23 12:29:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:57,643 INFO L225 Difference]: With dead ends: 201 [2021-11-23 12:29:57,643 INFO L226 Difference]: Without dead ends: 158 [2021-11-23 12:29:57,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2021-11-23 12:29:57,645 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 870 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:57,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 583 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 12:29:57,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-23 12:29:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 105. [2021-11-23 12:29:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 99 states have (on average 1.121212121212121) internal successors, (111), 104 states have internal predecessors, (111), 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) [2021-11-23 12:29:57,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2021-11-23 12:29:57,664 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 49 [2021-11-23 12:29:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:57,664 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2021-11-23 12:29:57,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 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) [2021-11-23 12:29:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2021-11-23 12:29:57,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:29:57,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:57,666 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:57,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:29:57,667 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:57,668 INFO L85 PathProgramCache]: Analyzing trace with hash -30992467, now seen corresponding path program 1 times [2021-11-23 12:29:57,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:57,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782530765] [2021-11-23 12:29:57,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:57,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:57,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:57,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782530765] [2021-11-23 12:29:57,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782530765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:29:57,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144481382] [2021-11-23 12:29:57,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:57,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:29:57,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:29:57,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:29:58,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:29:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:58,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2565 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:29:58,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:29:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:58,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:29:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:58,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144481382] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 12:29:58,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 12:29:58,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2021-11-23 12:29:58,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916248730] [2021-11-23 12:29:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:58,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:29:58,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:29:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:29:58,846 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-23 12:29:59,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:59,042 INFO L93 Difference]: Finished difference Result 192 states and 207 transitions. [2021-11-23 12:29:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:29:59,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) Word has length 50 [2021-11-23 12:29:59,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:59,044 INFO L225 Difference]: With dead ends: 192 [2021-11-23 12:29:59,044 INFO L226 Difference]: Without dead ends: 150 [2021-11-23 12:29:59,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:29:59,045 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 47 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:59,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 348 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:29:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-23 12:29:59,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 107. [2021-11-23 12:29:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 101 states have (on average 1.1287128712871286) internal successors, (114), 106 states have internal predecessors, (114), 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) [2021-11-23 12:29:59,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2021-11-23 12:29:59,063 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 50 [2021-11-23 12:29:59,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:59,063 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2021-11-23 12:29:59,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-11-23 12:29:59,064 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2021-11-23 12:29:59,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:29:59,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:59,065 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:59,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:29:59,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:29:59,278 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:59,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1734719090, now seen corresponding path program 1 times [2021-11-23 12:29:59,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:59,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704542253] [2021-11-23 12:29:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:59,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:29:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:29:59,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:29:59,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704542253] [2021-11-23 12:29:59,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704542253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:29:59,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:29:59,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 12:29:59,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510737278] [2021-11-23 12:29:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:29:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:29:59,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:29:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:29:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:29:59,450 INFO L87 Difference]: Start difference. First operand 107 states and 114 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-11-23 12:29:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:29:59,500 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2021-11-23 12:29:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:29:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) Word has length 51 [2021-11-23 12:29:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:29:59,502 INFO L225 Difference]: With dead ends: 152 [2021-11-23 12:29:59,502 INFO L226 Difference]: Without dead ends: 84 [2021-11-23 12:29:59,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 12:29:59,505 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 6 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:29:59,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 434 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:29:59,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-23 12:29:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-11-23 12:29:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 78 states have (on average 1.141025641025641) internal successors, (89), 83 states have internal predecessors, (89), 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) [2021-11-23 12:29:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-11-23 12:29:59,517 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 51 [2021-11-23 12:29:59,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:29:59,518 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-11-23 12:29:59,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 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) [2021-11-23 12:29:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-11-23 12:29:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:29:59,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:29:59,522 INFO L514 BasicCegarLoop]: trace 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:29:59,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:29:59,522 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:29:59,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:29:59,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1387891500, now seen corresponding path program 1 times [2021-11-23 12:29:59,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:29:59,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563913232] [2021-11-23 12:29:59,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:29:59,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:29:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:30:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:30:00,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:30:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563913232] [2021-11-23 12:30:00,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563913232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:30:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001355209] [2021-11-23 12:30:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:30:00,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:30:00,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:30:00,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:30:00,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:30:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:30:01,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2576 conjuncts, 98 conjunts are in the unsatisfiable core [2021-11-23 12:30:01,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:30:02,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 12:30:02,656 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:30:02,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-23 12:30:02,925 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:30:02,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 12:30:03,089 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 12:30:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 106 treesize of output 86 [2021-11-23 12:30:03,143 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 12:30:03,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 51 [2021-11-23 12:30:03,397 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 12:30:03,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 72 [2021-11-23 12:30:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:30:03,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:30:10,350 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9| 0) (let ((.cse6 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616))) (and (or (and (forall ((v_DerPreprocessor_3 Int)) (let ((.cse2 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9|) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse0 (mod (select .cse2 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (<= .cse0 9223372036854775807) (let ((.cse1 (select .cse2 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) .cse0)))) (<= (div (* .cse1 (- 1)) (- 256)) (+ (div (+ .cse1 (- 256)) 256) 1))))))) (forall ((v_DerPreprocessor_3 Int)) (let ((.cse5 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9|) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse3 (mod (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (< 9223372036854775807 .cse3) (let ((.cse4 (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 .cse3)))) (<= (div (* .cse4 (- 1)) (- 256)) (+ (div (+ (- 256) .cse4) 256) 1)))))))) (<= .cse6 9223372036854775807)) (or (and (forall ((v_DerPreprocessor_3 Int)) (let ((.cse9 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9|) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse7 (mod (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (<= .cse7 9223372036854775807) (let ((.cse8 (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| .cse7 (- 18446744073709551600))))) (<= (div (* .cse8 (- 1)) (- 256)) (+ (div (+ (- 256) .cse8) 256) 1))))))) (forall ((v_DerPreprocessor_3 Int)) (let ((.cse11 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_9|) v_DerPreprocessor_3)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse12 (mod (select .cse11 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse10 (select .cse11 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| .cse12 16)))) (<= (div (* .cse10 (- 1)) (- 256)) (+ (div (+ (- 256) .cse10) 256) 1))) (< 9223372036854775807 .cse12)))))) (< 9223372036854775807 .cse6)))))) is different from false [2021-11-23 12:30:12,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 782 treesize of output 742 [2021-11-23 12:30:14,361 INFO L354 Elim1Store]: treesize reduction 802, result has 28.6 percent of original size [2021-11-23 12:30:14,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 1748468 treesize of output 1723188 [2021-11-23 12:31:49,572 WARN L227 SmtUtils]: Spent 1.59m on a formula simplification. DAG size of input: 2014 DAG size of output: 1757 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:31:49,601 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 12:31:49,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:31:49,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-23 12:31:49,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253590368] [2021-11-23 12:31:49,602 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 12:31:49,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 12:31:49,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:49,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 12:31:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=2119, Unknown=2, NotChecked=92, Total=2352 [2021-11-23 12:31:49,605 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 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) [2021-11-23 12:31:52,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 12:31:55,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:55,995 INFO L93 Difference]: Finished difference Result 190 states and 206 transitions. [2021-11-23 12:31:55,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:31:55,996 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 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) Word has length 51 [2021-11-23 12:31:55,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:55,998 INFO L225 Difference]: With dead ends: 190 [2021-11-23 12:31:55,998 INFO L226 Difference]: Without dead ends: 148 [2021-11-23 12:31:56,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=392, Invalid=4032, Unknown=2, NotChecked=130, Total=4556 [2021-11-23 12:31:56,001 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 702 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:56,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 904 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 12:31:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-23 12:31:56,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 86. [2021-11-23 12:31:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 80 states have (on average 1.15) internal successors, (92), 85 states have internal predecessors, (92), 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) [2021-11-23 12:31:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2021-11-23 12:31:56,015 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 51 [2021-11-23 12:31:56,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:56,015 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2021-11-23 12:31:56,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 19 states have internal predecessors, (51), 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) [2021-11-23 12:31:56,016 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2021-11-23 12:31:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:31:56,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:56,017 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 12:31:56,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 12:31:56,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:31:56,230 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:31:56,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1800870641, now seen corresponding path program 2 times [2021-11-23 12:31:56,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:56,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855608806] [2021-11-23 12:31:56,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:56,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:57,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855608806] [2021-11-23 12:31:57,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855608806] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:31:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601013449] [2021-11-23 12:31:57,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:31:57,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:31:57,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:57,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:31:57,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:31:59,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:31:59,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:31:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-23 12:31:59,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:00,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 12:32:00,680 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:32:00,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2021-11-23 12:32:00,852 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 12:32:00,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-23 12:32:01,076 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:32:01,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 12:32:01,212 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 12:32:01,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 86 [2021-11-23 12:32:01,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 12:32:01,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 13 [2021-11-23 12:32:01,465 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 12:32:01,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 72 [2021-11-23 12:32:01,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:01,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:05,792 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13| 0) (let ((.cse3 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616))) (and (or (forall ((v_DerPreprocessor_10 Int)) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_DerPreprocessor_10)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse2 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse0 (select .cse1 (+ .cse2 |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16)))) (<= (div (* .cse0 (- 1)) (- 256)) (+ (div (+ .cse0 (- 256)) 256) 1))) (< 9223372036854775807 .cse2))))) (<= .cse3 9223372036854775807)) (or (forall ((v_DerPreprocessor_10 Int)) (let ((.cse5 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_DerPreprocessor_10)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse6 (mod (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse4 (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 .cse6)))) (<= (div (* .cse4 (- 1)) (- 256)) (+ (div (+ .cse4 (- 256)) 256) 1))) (< 9223372036854775807 .cse6))))) (< 9223372036854775807 .cse3)) (forall ((v_DerPreprocessor_10 Int)) (let ((.cse8 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_DerPreprocessor_10)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse9 (mod (select .cse8 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse7 (select .cse8 (+ .cse9 |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600))))) (<= (div (* .cse7 (- 1)) (- 256)) (+ (div (+ (- 256) .cse7) 256) 1))) (<= .cse9 9223372036854775807))))))))) is different from false [2021-11-23 12:32:08,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13| Int)) (or (let ((.cse3 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616))) (and (or (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6| Int) (v_prenex_8 Int)) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1327#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_prenex_8)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse2 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse0 (select .cse1 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| .cse2 16)))) (<= (div (* .cse0 (- 1)) (- 256)) (+ (div (+ (- 256) .cse0) 256) 1))) (< 9223372036854775807 .cse2))))) (<= .cse3 9223372036854775807)) (or (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6| Int) (v_DerPreprocessor_10 Int)) (let ((.cse6 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1327#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_DerPreprocessor_10)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse4 (mod (select .cse6 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (< 9223372036854775807 .cse4) (let ((.cse5 (select .cse6 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 .cse4)))) (<= (div (* .cse5 (- 1)) (- 256)) (+ 1 (div (+ (- 256) .cse5) 256)))))))) (< 9223372036854775807 .cse3)) (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6| Int) (v_prenex_7 Int)) (let ((.cse9 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1327#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~mem1335#1_6|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13|) v_prenex_7)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse7 (mod (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (<= .cse7 9223372036854775807) (let ((.cse8 (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) .cse7)))) (<= (div (* .cse8 (- 1)) (- 256)) (+ (div (+ (- 256) .cse8) 256) 1))))))))) (< |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_13| 0))) is different from false [2021-11-23 12:32:10,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 676 treesize of output 646 [2021-11-23 12:32:13,929 INFO L354 Elim1Store]: treesize reduction 744, result has 33.7 percent of original size [2021-11-23 12:32:13,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 9093435 treesize of output 8969509 [2021-11-23 12:43:23,932 WARN L227 SmtUtils]: Spent 11.17m on a formula simplification. DAG size of input: 4101 DAG size of output: 3809 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 12:43:24,009 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 12:43:24,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 12:43:24,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-23 12:43:24,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360683034] [2021-11-23 12:43:24,010 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 12:43:24,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:43:24,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:43:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1940, Unknown=2, NotChecked=178, Total=2256 [2021-11-23 12:43:24,012 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) [2021-11-23 12:43:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:26,925 INFO L93 Difference]: Finished difference Result 191 states and 207 transitions. [2021-11-23 12:43:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:43:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) Word has length 52 [2021-11-23 12:43:26,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:26,927 INFO L225 Difference]: With dead ends: 191 [2021-11-23 12:43:26,928 INFO L226 Difference]: Without dead ends: 149 [2021-11-23 12:43:26,930 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=327, Invalid=3461, Unknown=2, NotChecked=242, Total=4032 [2021-11-23 12:43:26,931 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 697 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:26,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 483 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 12:43:26,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-23 12:43:26,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 85. [2021-11-23 12:43:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.139240506329114) internal successors, (90), 84 states have internal predecessors, (90), 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) [2021-11-23 12:43:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2021-11-23 12:43:26,945 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 52 [2021-11-23 12:43:26,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:26,946 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2021-11-23 12:43:26,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) [2021-11-23 12:43:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2021-11-23 12:43:26,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 12:43:26,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:26,947 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 12:43:26,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 12:43:27,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 12:43:27,158 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:43:27,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:27,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1871345779, now seen corresponding path program 3 times [2021-11-23 12:43:27,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:27,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203144893] [2021-11-23 12:43:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:27,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:27,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203144893] [2021-11-23 12:43:27,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203144893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:43:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148964228] [2021-11-23 12:43:27,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:43:27,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:43:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:43:27,492 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:43:27,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a3129c6-870d-42b0-8052-f33cbd2cc538/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:43:29,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 12:43:29,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:43:29,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-23 12:43:29,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:43:30,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 12:43:30,658 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:43:30,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2021-11-23 12:43:30,886 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:43:30,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 12:43:30,997 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-23 12:43:30,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2021-11-23 12:43:31,125 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-23 12:43:31,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 86 [2021-11-23 12:43:31,142 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 12:43:31,170 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 12:43:31,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 51 [2021-11-23 12:43:31,378 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 12:43:31,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 72 [2021-11-23 12:43:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:31,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:43:39,566 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18| Int)) (or (< |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18| (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1| 8)) (let ((.cse0 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616))) (and (or (<= .cse0 9223372036854775807) (and (forall ((v_DerPreprocessor_18 Int) (v_prenex_13 Int)) (let ((.cse3 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) v_DerPreprocessor_18) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18|) v_prenex_13)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse1 (mod (select .cse3 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (<= .cse1 9223372036854775807) (let ((.cse2 (select .cse3 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| .cse1 (- 18446744073709551600))))) (<= (div (* .cse2 (- 1)) (- 256)) (+ (div (+ (- 256) .cse2) 256) 1))))))) (forall ((v_DerPreprocessor_17 Int) (v_DerPreprocessor_18 Int)) (let ((.cse5 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) v_DerPreprocessor_18) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18|) v_DerPreprocessor_17)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse6 (mod (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse4 (select .cse5 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| .cse6 16)))) (<= (div (* .cse4 (- 1)) (- 256)) (+ (div (+ .cse4 (- 256)) 256) 1))) (< 9223372036854775807 .cse6))))))) (or (< 9223372036854775807 .cse0) (and (forall ((v_prenex_15 Int) (v_DerPreprocessor_18 Int)) (let ((.cse9 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) v_DerPreprocessor_18) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18|) v_prenex_15)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse7 (mod (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (<= .cse7 9223372036854775807) (let ((.cse8 (select .cse9 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| (- 18446744073709551600) .cse7)))) (<= (div (* .cse8 (- 1)) (- 256)) (+ (div (+ .cse8 (- 256)) 256) 1))))))) (forall ((v_DerPreprocessor_18 Int) (v_prenex_14 Int)) (let ((.cse11 (store (select (store |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.base|) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1| |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset|) v_DerPreprocessor_18) (+ |c_ULTIMATE.start_#Ultimate.C_memcpy_dest#1.offset| |v_ULTIMATE.start_#Ultimate.C_memcpy_#t~loopctr1336#1_18|) v_prenex_14)) |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.base|) (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 (mod |c_ULTIMATE.start_aws_string_new_from_array_~len#1| 18446744073709551616)) 0))) (let ((.cse12 (mod (select .cse11 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 8)) 18446744073709551616))) (or (let ((.cse10 (select .cse11 (+ |c_ULTIMATE.start_aws_string_new_from_array_~str~2#1.offset| 16 .cse12)))) (<= (div (* .cse10 (- 1)) (- 256)) (+ (div (+ (- 256) .cse10) 256) 1))) (< 9223372036854775807 .cse12))))))))))) is different from false