./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:46:54,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:46:54,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:46:54,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:46:54,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:46:54,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:46:54,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:46:54,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:46:54,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:46:54,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:46:54,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:46:54,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:46:54,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:46:54,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:46:54,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:46:54,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:46:54,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:46:54,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:46:54,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:46:54,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:46:54,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:46:54,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:46:54,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:46:54,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:46:54,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:46:54,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:46:54,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:46:54,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:46:54,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:46:54,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:46:54,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:46:54,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:46:54,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:46:54,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:46:54,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:46:54,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:46:54,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:46:54,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:46:54,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:46:54,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:46:54,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:46:54,961 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 13:46:55,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:46:55,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:46:55,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:46:55,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:46:55,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:46:55,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:46:55,006 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:46:55,006 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:46:55,006 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:46:55,006 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:46:55,007 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:46:55,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:46:55,008 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:46:55,008 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:46:55,008 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:46:55,008 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:46:55,009 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:46:55,009 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:46:55,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:46:55,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:46:55,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:46:55,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:46:55,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:46:55,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:46:55,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:46:55,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:46:55,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:46:55,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:46:55,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:46:55,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:55,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:46:55,012 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:46:55,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:46:55,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:46:55,013 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:46:55,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:46:55,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:46:55,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:46:55,014 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_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-11-23 13:46:55,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:46:55,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:46:55,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:46:55,380 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:46:55,382 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:46:55,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-23 13:46:58,308 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:46:58,960 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:46:58,961 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-11-23 13:46:59,012 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/data/e3614fe98/b129d32b55b642a8ad2010fbee52b5f2/FLAG0c6fc90c0 [2022-11-23 13:46:59,070 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/data/e3614fe98/b129d32b55b642a8ad2010fbee52b5f2 [2022-11-23 13:46:59,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:46:59,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:46:59,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:59,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:46:59,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:46:59,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:59" (1/1) ... [2022-11-23 13:46:59,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d1ba01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:59, skipping insertion in model container [2022-11-23 13:46:59,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:59" (1/1) ... [2022-11-23 13:46:59,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:46:59,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:46:59,534 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-23 13:46:59,542 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-23 13:47:00,759 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,759 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,763 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,764 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,769 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,782 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,787 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:00,794 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 13:47:01,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 13:47:01,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 13:47:01,200 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 13:47:01,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 13:47:01,202 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 13:47:01,203 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 13:47:01,204 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 13:47:01,205 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 13:47:01,206 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 13:47:01,392 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 13:47:01,502 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,506 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:47:01,726 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:47:01,754 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-11-23 13:47:01,755 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-11-23 13:47:01,808 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,809 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,809 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,810 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,811 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,857 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,857 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,858 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,858 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:01,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-23 13:47:01,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-23 13:47:01,949 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-23 13:47:01,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-23 13:47:01,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-23 13:47:01,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-23 13:47:01,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-23 13:47:01,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-23 13:47:01,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-23 13:47:01,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-23 13:47:01,978 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-23 13:47:02,037 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:02,038 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-23 13:47:02,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:47:02,272 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:47:02,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02 WrapperNode [2022-11-23 13:47:02,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:47:02,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:47:02,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:47:02,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:47:02,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,488 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-11-23 13:47:02,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:47:02,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:47:02,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:47:02,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:47:02,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,593 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:47:02,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:47:02,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:47:02,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:47:02,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (1/1) ... [2022-11-23 13:47:02,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:47:02,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:47:02,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:47:02,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:47:02,691 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-23 13:47:02,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-23 13:47:02,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-23 13:47:02,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-23 13:47:02,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-11-23 13:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-23 13:47:02,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-23 13:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 13:47:02,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 13:47:02,695 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 13:47:02,695 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-23 13:47:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-23 13:47:02,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 13:47:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 13:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:47:02,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:47:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:47:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:47:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-23 13:47:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-23 13:47:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 13:47:02,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:47:02,699 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-23 13:47:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-23 13:47:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:47:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:47:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-23 13:47:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-23 13:47:02,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:47:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-23 13:47:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-23 13:47:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:47:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:47:02,701 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-11-23 13:47:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-11-23 13:47:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-23 13:47:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-23 13:47:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-23 13:47:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-23 13:47:02,702 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-23 13:47:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-23 13:47:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:47:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-11-23 13:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-11-23 13:47:02,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-11-23 13:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:47:03,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:47:03,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:47:03,261 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-11-23 13:47:04,491 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:47:04,701 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:47:04,701 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 13:47:04,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:04 BoogieIcfgContainer [2022-11-23 13:47:04,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:47:04,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:47:04,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:47:04,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:47:04,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:59" (1/3) ... [2022-11-23 13:47:04,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec42bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:04, skipping insertion in model container [2022-11-23 13:47:04,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:47:02" (2/3) ... [2022-11-23 13:47:04,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec42bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:47:04, skipping insertion in model container [2022-11-23 13:47:04,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:47:04" (3/3) ... [2022-11-23 13:47:04,720 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-11-23 13:47:04,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:47:04,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:47:04,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:47:04,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60a02aa8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:47:04,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:47:04,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-23 13:47:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-23 13:47:04,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:04,825 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:04,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash 832461079, now seen corresponding path program 1 times [2022-11-23 13:47:04,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:04,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744307213] [2022-11-23 13:47:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:04,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:06,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:47:06,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:06,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744307213] [2022-11-23 13:47:06,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744307213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:06,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:06,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:47:06,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460128774] [2022-11-23 13:47:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:06,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:47:06,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:47:06,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:47:06,791 INFO L87 Difference]: Start difference. First operand has 125 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 13:47:07,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:07,160 INFO L93 Difference]: Finished difference Result 197 states and 275 transitions. [2022-11-23 13:47:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:47:07,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 60 [2022-11-23 13:47:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:07,174 INFO L225 Difference]: With dead ends: 197 [2022-11-23 13:47:07,174 INFO L226 Difference]: Without dead ends: 152 [2022-11-23 13:47:07,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 13:47:07,180 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:07,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 768 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:47:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-23 13:47:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2022-11-23 13:47:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 73 states have internal predecessors, (83), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2022-11-23 13:47:07,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 167 transitions. [2022-11-23 13:47:07,236 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 167 transitions. Word has length 60 [2022-11-23 13:47:07,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:07,237 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 167 transitions. [2022-11-23 13:47:07,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 7 states have internal predecessors, (31), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 13:47:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 167 transitions. [2022-11-23 13:47:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 13:47:07,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:07,241 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:07,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:47:07,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash -557245047, now seen corresponding path program 1 times [2022-11-23 13:47:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:07,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141227883] [2022-11-23 13:47:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:07,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:47:07,756 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141227883] [2022-11-23 13:47:07,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141227883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:07,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:07,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 13:47:07,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331075712] [2022-11-23 13:47:07,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:07,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:47:07,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:47:07,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 13:47:07,762 INFO L87 Difference]: Start difference. First operand 130 states and 167 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-23 13:47:07,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:07,953 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2022-11-23 13:47:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:47:07,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-23 13:47:07,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:07,957 INFO L225 Difference]: With dead ends: 174 [2022-11-23 13:47:07,957 INFO L226 Difference]: Without dead ends: 134 [2022-11-23 13:47:07,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:47:07,959 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:07,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 551 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:47:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-23 13:47:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-23 13:47:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-11-23 13:47:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 171 transitions. [2022-11-23 13:47:07,976 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 171 transitions. Word has length 68 [2022-11-23 13:47:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:07,977 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 171 transitions. [2022-11-23 13:47:07,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-23 13:47:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 171 transitions. [2022-11-23 13:47:07,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 13:47:07,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:07,980 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:07,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:47:07,980 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:07,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1539866196, now seen corresponding path program 1 times [2022-11-23 13:47:07,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:07,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661580472] [2022-11-23 13:47:07,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:07,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:47:08,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:08,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661580472] [2022-11-23 13:47:08,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661580472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:08,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:08,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 13:47:08,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147755289] [2022-11-23 13:47:08,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:08,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:47:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:08,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:47:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-23 13:47:08,728 INFO L87 Difference]: Start difference. First operand 134 states and 171 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 13:47:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:09,249 INFO L93 Difference]: Finished difference Result 190 states and 247 transitions. [2022-11-23 13:47:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 13:47:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 68 [2022-11-23 13:47:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:09,252 INFO L225 Difference]: With dead ends: 190 [2022-11-23 13:47:09,252 INFO L226 Difference]: Without dead ends: 154 [2022-11-23 13:47:09,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:47:09,253 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 174 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:09,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 861 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 13:47:09,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-11-23 13:47:09,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 130. [2022-11-23 13:47:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-11-23 13:47:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 165 transitions. [2022-11-23 13:47:09,285 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 165 transitions. Word has length 68 [2022-11-23 13:47:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:09,285 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 165 transitions. [2022-11-23 13:47:09,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-23 13:47:09,286 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 165 transitions. [2022-11-23 13:47:09,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 13:47:09,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:09,289 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:09,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:47:09,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:09,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1616400264, now seen corresponding path program 1 times [2022-11-23 13:47:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:09,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816969406] [2022-11-23 13:47:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:09,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:47:09,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:09,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816969406] [2022-11-23 13:47:09,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816969406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:47:09,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:47:09,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 13:47:09,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120426180] [2022-11-23 13:47:09,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:47:09,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:47:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:47:09,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:47:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:47:09,998 INFO L87 Difference]: Start difference. First operand 130 states and 165 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-23 13:47:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:47:10,189 INFO L93 Difference]: Finished difference Result 170 states and 214 transitions. [2022-11-23 13:47:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:47:10,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 68 [2022-11-23 13:47:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:47:10,191 INFO L225 Difference]: With dead ends: 170 [2022-11-23 13:47:10,191 INFO L226 Difference]: Without dead ends: 138 [2022-11-23 13:47:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:47:10,193 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 1 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:47:10,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 829 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:47:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-23 13:47:10,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-11-23 13:47:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 77 states have internal predecessors, (88), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2022-11-23 13:47:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-11-23 13:47:10,208 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 68 [2022-11-23 13:47:10,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:47:10,208 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-11-23 13:47:10,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-23 13:47:10,209 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-11-23 13:47:10,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 13:47:10,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:47:10,211 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:47:10,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:47:10,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:47:10,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:47:10,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1793464088, now seen corresponding path program 1 times [2022-11-23 13:47:10,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:47:10,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282217475] [2022-11-23 13:47:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:10,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:47:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-23 13:47:12,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:47:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282217475] [2022-11-23 13:47:12,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282217475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:47:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781618706] [2022-11-23 13:47:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:47:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:47:12,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:47:12,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:47:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d84c20f-932b-470f-875e-39d05ea592bf/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:47:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:47:13,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-23 13:47:13,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:47:13,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-23 13:47:17,289 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-11-23 13:47:17,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 191 [2022-11-23 13:47:17,557 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 13:47:17,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:48:08,904 WARN L233 SmtUtils]: Spent 42.21s on a formula simplification. DAG size of input: 152 DAG size of output: 102 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:48:10,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781618706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:48:10,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711920601] [2022-11-23 13:48:10,757 INFO L159 IcfgInterpreter]: Started Sifa with 62 locations of interest [2022-11-23 13:48:10,757 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:48:10,762 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:48:10,768 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:48:10,768 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:49:19,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-23 13:49:19,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-23 13:49:52,079 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 3235 for LOIs [2022-11-23 13:49:55,905 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 3260 for LOIs [2022-11-23 13:50:38,702 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3306 for LOIs [2022-11-23 13:51:09,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:19,820 WARN L233 SmtUtils]: Spent 1.14m on a formula simplification that was a NOOP. DAG size: 3240 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:30,500 WARN L233 SmtUtils]: Spent 1.13m on a formula simplification that was a NOOP. DAG size: 3235 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)