./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:15:57,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:15:57,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:15:57,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:15:57,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:15:57,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:15:57,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:15:57,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:15:57,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:15:57,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:15:57,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:15:57,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:15:57,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:15:57,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:15:57,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:15:57,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:15:57,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:15:57,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:15:57,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:15:57,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:15:57,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:15:57,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:15:57,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:15:57,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:15:57,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:15:57,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:15:57,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:15:57,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:15:57,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:15:57,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:15:57,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:15:57,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:15:57,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:15:57,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:15:57,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:15:57,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:15:57,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:15:57,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:15:57,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:15:57,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:15:57,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:15:57,844 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 17:15:57,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:15:57,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:15:57,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:15:57,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:15:57,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:15:57,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:15:57,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:15:57,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:15:57,869 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:15:57,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:15:57,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:15:57,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:15:57,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:15:57,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:15:57,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:15:57,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:15:57,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:15:57,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:15:57,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:15:57,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:15:57,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:15:57,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:15:57,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:15:57,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:15:57,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:15:57,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:15:57,873 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_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2021-12-06 17:15:58,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:15:58,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:15:58,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:15:58,087 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:15:58,088 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:15:58,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-12-06 17:15:58,129 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/data/52db268eb/6984e545c90b476f9bd737d5e9374d22/FLAG86082bbe7 [2021-12-06 17:15:58,693 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:15:58,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-12-06 17:15:58,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/data/52db268eb/6984e545c90b476f9bd737d5e9374d22/FLAG86082bbe7 [2021-12-06 17:15:59,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/data/52db268eb/6984e545c90b476f9bd737d5e9374d22 [2021-12-06 17:15:59,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:15:59,119 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:15:59,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:15:59,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:15:59,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:15:59,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:59" (1/1) ... [2021-12-06 17:15:59,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f19900e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:15:59, skipping insertion in model container [2021-12-06 17:15:59,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:15:59" (1/1) ... [2021-12-06 17:15:59,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:15:59,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:15:59,398 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_a6c16522-1c9b-43a4-9749-10c101d219e5/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-12-06 17:15:59,403 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_a6c16522-1c9b-43a4-9749-10c101d219e5/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-12-06 17:16:00,090 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,093 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,396 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 17:16:00,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 17:16:00,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 17:16:00,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 17:16:00,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 17:16:00,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 17:16:00,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 17:16:00,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 17:16:00,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 17:16:00,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 17:16:00,547 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 17:16:00,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,625 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:16:00,669 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:16:00,678 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_a6c16522-1c9b-43a4-9749-10c101d219e5/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4499,4512] [2021-12-06 17:16:00,678 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_a6c16522-1c9b-43a4-9749-10c101d219e5/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i[4559,4572] [2021-12-06 17:16:00,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,703 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,704 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,708 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,709 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-06 17:16:00,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-06 17:16:00,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-06 17:16:00,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-06 17:16:00,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-06 17:16:00,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-06 17:16:00,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-06 17:16:00,734 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-06 17:16:00,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-06 17:16:00,735 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-06 17:16:00,749 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-06 17:16:00,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-06 17:16:00,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:16:00,957 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:16:00,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00 WrapperNode [2021-12-06 17:16:00,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:16:00,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:16:00,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:16:00,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:16:00,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,079 INFO L137 Inliner]: procedures = 681, calls = 2272, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 374 [2021-12-06 17:16:01,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:16:01,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:16:01,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:16:01,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:16:01,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:16:01,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:16:01,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:16:01,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:16:01,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (1/1) ... [2021-12-06 17:16:01,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:16:01,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:01,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:16:01,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:16:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-06 17:16:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-06 17:16:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2021-12-06 17:16:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2021-12-06 17:16:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-06 17:16:01,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-06 17:16:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-06 17:16:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-06 17:16:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:16:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:16:01,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:16:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:16:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:16:01,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:16:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:16:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:16:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-06 17:16:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-06 17:16:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 17:16:01,188 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 17:16:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 17:16:01,188 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-06 17:16:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-06 17:16:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-06 17:16:01,189 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-06 17:16:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:16:01,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:16:01,349 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:16:01,351 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:16:01,660 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:16:01,667 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:16:01,668 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:16:01,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:16:01 BoogieIcfgContainer [2021-12-06 17:16:01,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:16:01,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:16:01,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:16:01,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:16:01,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:15:59" (1/3) ... [2021-12-06 17:16:01,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31765eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:16:01, skipping insertion in model container [2021-12-06 17:16:01,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:16:00" (2/3) ... [2021-12-06 17:16:01,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31765eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:16:01, skipping insertion in model container [2021-12-06 17:16:01,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:16:01" (3/3) ... [2021-12-06 17:16:01,677 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2021-12-06 17:16:01,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:16:01,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:16:01,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:16:01,738 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:16:01,738 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:16:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-06 17:16:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 17:16:01,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:01,767 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:01,767 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:01,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1420882534, now seen corresponding path program 1 times [2021-12-06 17:16:01,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:01,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154684979] [2021-12-06 17:16:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:01,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:16:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:16:02,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:16:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:16:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:16:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:16:02,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:02,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154684979] [2021-12-06 17:16:02,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154684979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:02,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:02,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:16:02,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411953707] [2021-12-06 17:16:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:02,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:16:02,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:02,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:16:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:16:02,237 INFO L87 Difference]: Start difference. First operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:16:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:02,267 INFO L93 Difference]: Finished difference Result 193 states and 263 transitions. [2021-12-06 17:16:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:16:02,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2021-12-06 17:16:02,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:02,275 INFO L225 Difference]: With dead ends: 193 [2021-12-06 17:16:02,275 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 17:16:02,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:16:02,282 INFO L933 BasicCegarLoop]: 126 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, 126 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 [2021-12-06 17:16:02,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:16:02,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 17:16:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-06 17:16:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 17:16:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2021-12-06 17:16:02,324 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 49 [2021-12-06 17:16:02,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:02,326 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2021-12-06 17:16:02,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:16:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2021-12-06 17:16:02,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 17:16:02,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:02,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:02,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:16:02,330 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:02,331 INFO L85 PathProgramCache]: Analyzing trace with hash -206021594, now seen corresponding path program 1 times [2021-12-06 17:16:02,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904132471] [2021-12-06 17:16:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:02,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 17:16:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 17:16:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 17:16:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 17:16:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 17:16:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:16:02,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:02,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904132471] [2021-12-06 17:16:02,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904132471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:02,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:02,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:16:02,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272661316] [2021-12-06 17:16:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:02,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:16:02,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:02,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:16:02,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:16:02,567 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 17:16:02,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:02,670 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2021-12-06 17:16:02,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:16:02,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2021-12-06 17:16:02,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:02,673 INFO L225 Difference]: With dead ends: 174 [2021-12-06 17:16:02,673 INFO L226 Difference]: Without dead ends: 94 [2021-12-06 17:16:02,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:16:02,676 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 52 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:02,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 793 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:16:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-06 17:16:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-06 17:16:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 17:16:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2021-12-06 17:16:02,691 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 49 [2021-12-06 17:16:02,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:02,691 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2021-12-06 17:16:02,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 17:16:02,692 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2021-12-06 17:16:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 17:16:02,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:02,694 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:02,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:16:02,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:02,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1123217906, now seen corresponding path program 1 times [2021-12-06 17:16:02,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:02,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906840599] [2021-12-06 17:16:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:02,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:16:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:16:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:16:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:16:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:16:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,282 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:16:03,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:03,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906840599] [2021-12-06 17:16:03,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906840599] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:03,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507469408] [2021-12-06 17:16:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:03,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:03,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:03,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:03,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:16:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:03,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:16:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 17:16:03,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:03,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507469408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:03,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:03,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 32 [2021-12-06 17:16:03,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274996255] [2021-12-06 17:16:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:03,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:16:03,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:16:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:16:03,855 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:16:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:04,047 INFO L93 Difference]: Finished difference Result 119 states and 150 transitions. [2021-12-06 17:16:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:16:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 83 [2021-12-06 17:16:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:04,051 INFO L225 Difference]: With dead ends: 119 [2021-12-06 17:16:04,051 INFO L226 Difference]: Without dead ends: 100 [2021-12-06 17:16:04,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:16:04,054 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 39 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:04,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1147 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:16:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-06 17:16:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-12-06 17:16:04,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.2) internal successors, (78), 67 states have internal predecessors, (78), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2021-12-06 17:16:04,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 126 transitions. [2021-12-06 17:16:04,068 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 126 transitions. Word has length 83 [2021-12-06 17:16:04,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:04,069 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 126 transitions. [2021-12-06 17:16:04,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 17:16:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 126 transitions. [2021-12-06 17:16:04,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-06 17:16:04,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:04,074 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:04,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:04,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:04,276 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:04,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:04,277 INFO L85 PathProgramCache]: Analyzing trace with hash -313871280, now seen corresponding path program 1 times [2021-12-06 17:16:04,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:04,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980611244] [2021-12-06 17:16:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:04,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:16:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:16:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:16:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:16:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:16:04,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:16:04,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:04,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980611244] [2021-12-06 17:16:04,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980611244] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:04,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877555402] [2021-12-06 17:16:04,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:04,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:04,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:04,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:16:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:04,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 17:16:04,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:16:05,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:05,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877555402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:05,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:05,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 25 [2021-12-06 17:16:05,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703620964] [2021-12-06 17:16:05,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:05,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:16:05,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:05,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:16:05,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:16:05,147 INFO L87 Difference]: Start difference. First operand 99 states and 126 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 17:16:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:05,328 INFO L93 Difference]: Finished difference Result 170 states and 225 transitions. [2021-12-06 17:16:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:16:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 83 [2021-12-06 17:16:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:05,331 INFO L225 Difference]: With dead ends: 170 [2021-12-06 17:16:05,331 INFO L226 Difference]: Without dead ends: 123 [2021-12-06 17:16:05,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:16:05,334 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 63 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:05,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 1376 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:16:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-06 17:16:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2021-12-06 17:16:05,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.2) internal successors, (84), 72 states have internal predecessors, (84), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (28), 24 states have call predecessors, (28), 24 states have call successors, (28) [2021-12-06 17:16:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2021-12-06 17:16:05,349 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 83 [2021-12-06 17:16:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:05,350 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2021-12-06 17:16:05,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 17:16:05,350 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2021-12-06 17:16:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 17:16:05,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:05,353 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:05,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:16:05,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:05,555 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash -723341143, now seen corresponding path program 1 times [2021-12-06 17:16:05,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:05,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281471820] [2021-12-06 17:16:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:05,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:16:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:16:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:16:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:16:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:16:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:16:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:06,031 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 17:16:06,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:06,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281471820] [2021-12-06 17:16:06,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281471820] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:06,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634853112] [2021-12-06 17:16:06,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:06,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:06,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:06,035 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:06,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:16:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:06,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 17:16:06,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:16:06,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:06,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634853112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:06,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:06,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 32 [2021-12-06 17:16:06,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697828644] [2021-12-06 17:16:06,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:06,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:16:06,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:16:06,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=924, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:16:06,497 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:16:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:06,794 INFO L93 Difference]: Finished difference Result 172 states and 226 transitions. [2021-12-06 17:16:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 17:16:06,795 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2021-12-06 17:16:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:06,797 INFO L225 Difference]: With dead ends: 172 [2021-12-06 17:16:06,797 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 17:16:06,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=1526, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 17:16:06,799 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 79 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:06,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 1524 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:06,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 17:16:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2021-12-06 17:16:06,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.2) internal successors, (84), 73 states have internal predecessors, (84), 26 states have call successors, (26), 9 states have call predecessors, (26), 10 states have return successors, (29), 24 states have call predecessors, (29), 25 states have call successors, (29) [2021-12-06 17:16:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2021-12-06 17:16:06,812 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 92 [2021-12-06 17:16:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:06,813 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2021-12-06 17:16:06,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 15 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:16:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2021-12-06 17:16:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 17:16:06,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:06,815 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:06,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:07,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:07,017 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:07,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:07,018 INFO L85 PathProgramCache]: Analyzing trace with hash -785380757, now seen corresponding path program 1 times [2021-12-06 17:16:07,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:07,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336353232] [2021-12-06 17:16:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:07,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:16:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:16:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 17:16:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 17:16:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 17:16:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 17:16:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 17:16:07,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:07,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336353232] [2021-12-06 17:16:07,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336353232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:07,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921124160] [2021-12-06 17:16:07,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:07,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:07,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:07,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:07,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:16:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:07,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:16:07,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 17:16:07,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:07,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921124160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:07,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:07,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 26 [2021-12-06 17:16:07,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876236979] [2021-12-06 17:16:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:07,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:16:07,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:16:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:16:07,817 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:16:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:07,986 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2021-12-06 17:16:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:16:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2021-12-06 17:16:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:07,988 INFO L225 Difference]: With dead ends: 154 [2021-12-06 17:16:07,988 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 17:16:07,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:16:07,989 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 56 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:07,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1439 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:16:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 17:16:07,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2021-12-06 17:16:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 78 states have internal predecessors, (89), 29 states have call successors, (29), 9 states have call predecessors, (29), 10 states have return successors, (32), 27 states have call predecessors, (32), 28 states have call successors, (32) [2021-12-06 17:16:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 150 transitions. [2021-12-06 17:16:07,999 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 150 transitions. Word has length 92 [2021-12-06 17:16:07,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:07,999 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 150 transitions. [2021-12-06 17:16:07,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 12 states have internal predecessors, (50), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:16:07,999 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 150 transitions. [2021-12-06 17:16:08,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 17:16:08,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:08,001 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:08,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:16:08,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:08,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:16:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -871660918, now seen corresponding path program 1 times [2021-12-06 17:16:08,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231600639] [2021-12-06 17:16:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:08,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 17:16:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 17:16:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:16:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:16:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:16:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:16:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 17:16:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:16:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 17:16:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 17:16:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 17:16:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 12 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-06 17:16:08,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231600639] [2021-12-06 17:16:08,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231600639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767847934] [2021-12-06 17:16:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:08,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:08,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:08,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:08,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:16:08,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:16:08,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 17:16:08,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-06 17:16:08,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-06 17:16:09,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767847934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:09,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:16:09,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 26 [2021-12-06 17:16:09,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169494900] [2021-12-06 17:16:09,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:09,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 17:16:09,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 17:16:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:16:09,013 INFO L87 Difference]: Start difference. First operand 115 states and 150 transitions. Second operand has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) [2021-12-06 17:16:09,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:09,386 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2021-12-06 17:16:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:16:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) Word has length 111 [2021-12-06 17:16:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:09,387 INFO L225 Difference]: With dead ends: 148 [2021-12-06 17:16:09,387 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 17:16:09,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:16:09,388 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 57 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:09,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 409 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:16:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 17:16:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 17:16:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:16:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 17:16:09,389 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2021-12-06 17:16:09,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:09,390 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 17:16:09,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 19 states have internal predecessors, (82), 9 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (26), 12 states have call predecessors, (26), 9 states have call successors, (26) [2021-12-06 17:16:09,390 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 17:16:09,390 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 17:16:09,391 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:16:09,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:16:09,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:09,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 17:16:09,795 INFO L854 garLoopResultBuilder]: At program point L6816(lines 6807 6817) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 17:16:09,795 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2021-12-06 17:16:09,795 INFO L858 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2021-12-06 17:16:09,795 INFO L854 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 17:16:09,795 INFO L858 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2021-12-06 17:16:09,795 INFO L858 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2021-12-06 17:16:09,795 INFO L854 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (let ((.cse1 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (or (let ((.cse0 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616))) (<= (* 18446744073709551616 .cse0) (+ (* 18446744073709551616 (div (+ (* |ensure_string_is_allocated_bounded_length_~len~1#1| (- 1)) 15 (* .cse0 18446744073709551616)) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_~len~1#1|))) .cse1) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (or .cse1 (<= 0 (+ (* 18446744073709551616 (div (+ 15 (* |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| (- 1))) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|))))) [2021-12-06 17:16:09,795 INFO L858 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2021-12-06 17:16:09,795 INFO L854 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (and (<= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16))) [2021-12-06 17:16:09,796 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L854 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 17:16:09,796 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6801 6805) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6883 6888) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L854 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-12-06 17:16:09,796 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-12-06 17:16:09,796 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6890 6892) the Hoare annotation is: true [2021-12-06 17:16:09,797 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-06 17:16:09,797 INFO L858 garLoopResultBuilder]: For program point L7455-1(line 7455) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L861 garLoopResultBuilder]: At program point L8925(line 8925) the Hoare annotation is: true [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L7455(line 7455) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L7455-2(lines 7437 7456) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L8921(line 8921) the Hoare annotation is: false [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L8921-1(line 8921) the Hoare annotation is: false [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L8921-2(line 8921) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L7439(line 7439) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L7439-5(line 7439) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L7439-4(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L7439-3(line 7439) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L7439-2(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L854 garLoopResultBuilder]: At program point L8922(line 8922) the Hoare annotation is: false [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 17:16:09,798 INFO L858 garLoopResultBuilder]: For program point L8918-1(line 8918) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L8922-1(line 8922) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L8918(line 8918) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L7440-2(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L7440(line 7440) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L7440-5(line 7440) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L7440-4(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base| 0) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L7440-3(line 7440) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L8919(lines 8919 8923) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L7441(lines 7441 7445) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L8911(lines 8911 8924) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L7446(lines 7446 7454) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L8916(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-06 17:16:09,799 INFO L858 garLoopResultBuilder]: For program point L8916-1(lines 8916 8918) no Hoare annotation was computed. [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L8916-2(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-06 17:16:09,799 INFO L854 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2021-12-06 17:16:09,800 INFO L854 garLoopResultBuilder]: At program point L8920-1(line 8920) the Hoare annotation is: false [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8920-2(line 8920) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8916-7(lines 8916 8918) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8916-3(lines 8916 8917) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L861 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L8916-5(lines 8916 8917) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L861 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-06 17:16:09,800 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L861 garLoopResultBuilder]: At program point aws_array_eq_ignore_caseENTRY(lines 7986 8016) the Hoare annotation is: true [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point L8005-4(lines 8005 8011) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point L7994(lines 7991 8016) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseFINAL(lines 7986 8016) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L861 garLoopResultBuilder]: At program point L7992-1(line 7992) the Hoare annotation is: true [2021-12-06 17:16:09,801 INFO L861 garLoopResultBuilder]: At program point L7992(line 7992) the Hoare annotation is: true [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point L8006(lines 8006 8010) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L861 garLoopResultBuilder]: At program point L8005-3(lines 8005 8011) the Hoare annotation is: true [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseEXIT(lines 7986 8016) no Hoare annotation was computed. [2021-12-06 17:16:09,801 INFO L858 garLoopResultBuilder]: For program point L8005-2(lines 8005 8011) no Hoare annotation was computed. [2021-12-06 17:16:09,803 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:09,804 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:16:09,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:16:09 BoogieIcfgContainer [2021-12-06 17:16:09,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:16:09,816 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:16:09,816 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:16:09,816 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:16:09,817 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:16:01" (3/4) ... [2021-12-06 17:16:09,819 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 17:16:09,824 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq_ignore_case [2021-12-06 17:16:09,825 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-12-06 17:16:09,825 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-12-06 17:16:09,840 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-12-06 17:16:09,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-12-06 17:16:09,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 17:16:09,843 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 17:16:09,866 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0 <= str && 0 <= \result) && (\old(max_size) == max_size || 16 == max_size)) && !(str == 0)) && !(\result == 0)) && !(\old(max_size) == 16) [2021-12-06 17:16:09,996 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:16:09,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:16:09,996 INFO L158 Benchmark]: Toolchain (without parser) took 10876.80ms. Allocated memory was 117.4MB in the beginning and 186.6MB in the end (delta: 69.2MB). Free memory was 89.9MB in the beginning and 60.8MB in the end (delta: 29.1MB). Peak memory consumption was 125.9MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,996 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:16:09,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1837.75ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 89.9MB in the beginning and 71.1MB in the end (delta: 18.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 121.13ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 103.4MB in the end (delta: -32.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,997 INFO L158 Benchmark]: Boogie Preprocessor took 42.75ms. Allocated memory is still 155.2MB. Free memory was 103.4MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,997 INFO L158 Benchmark]: RCFGBuilder took 546.35ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 66.7MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,998 INFO L158 Benchmark]: TraceAbstraction took 8143.92ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 65.6MB in the beginning and 36.4MB in the end (delta: 29.2MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,998 INFO L158 Benchmark]: Witness Printer took 179.94ms. Allocated memory is still 186.6MB. Free memory was 36.4MB in the beginning and 60.8MB in the end (delta: -24.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:16:09,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 79.7MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1837.75ms. Allocated memory was 117.4MB in the beginning and 155.2MB in the end (delta: 37.7MB). Free memory was 89.9MB in the beginning and 71.1MB in the end (delta: 18.8MB). Peak memory consumption was 57.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 121.13ms. Allocated memory is still 155.2MB. Free memory was 71.1MB in the beginning and 103.4MB in the end (delta: -32.3MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.75ms. Allocated memory is still 155.2MB. Free memory was 103.4MB in the beginning and 99.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 546.35ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 66.7MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8143.92ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 65.6MB in the beginning and 36.4MB in the end (delta: 29.2MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. * Witness Printer took 179.94ms. Allocated memory is still 186.6MB. Free memory was 36.4MB in the beginning and 60.8MB in the end (delta: -24.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 402 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 346 mSDsluCounter, 6814 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6085 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1444 IncrementalHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 729 mSDtfsCounter, 1444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 853 GetRequests, 671 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=6, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 171 PreInvPairs, 207 NumberOfFragments, 352 HoareAnnotationTreeSize, 171 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 36 FomulaSimplificationsInter, 174 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1118 ConstructedInterpolants, 0 QuantifiedInterpolants, 2624 SizeOfPredicates, 46 NumberOfNonLiveVariables, 4465 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 609/687 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7437]: Loop Invariant Derived loop invariant: (str_a == 0 && str_a == 0) || (str_b == 0 && 0 == str_b) - InvariantResult [Line: 8925]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8005]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6807]: Loop Invariant Derived loop invariant: ((((0 <= str && 0 <= \result) && (\old(max_size) == max_size || 16 == max_size)) && !(str == 0)) && !(\result == 0)) && !(\old(max_size) == 16) RESULT: Ultimate proved your program to be correct! [2021-12-06 17:16:10,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a6c16522-1c9b-43a4-9749-10c101d219e5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE