./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI --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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:48:47,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:48:47,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:48:47,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:48:47,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:48:47,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:48:47,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:48:47,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:48:47,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:48:47,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:48:47,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:48:47,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:48:47,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:48:47,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:48:47,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:48:47,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:48:47,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:48:47,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:48:47,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:48:47,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:48:47,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:48:47,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:48:47,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:48:47,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:48:47,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:48:47,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:48:47,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:48:47,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:48:47,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:48:47,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:48:47,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:48:47,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:48:47,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:48:47,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:48:47,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:48:47,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:48:47,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:48:47,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:48:47,191 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:48:47,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:48:47,193 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:48:47,194 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:48:47,238 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:48:47,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:48:47,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:48:47,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:48:47,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:48:47,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:48:47,248 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:48:47,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:48:47,248 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:48:47,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:48:47,249 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:48:47,250 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:48:47,250 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:48:47,250 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:48:47,250 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:48:47,251 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:48:47,251 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:48:47,251 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:48:47,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:48:47,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:48:47,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:48:47,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:48:47,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:48:47,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:48:47,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:48:47,254 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:48:47,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:48:47,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:48:47,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:48:47,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:47,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:48:47,256 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:48:47,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:48:47,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:48:47,256 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:48:47,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:48:47,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:48:47,257 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:48:47,257 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_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2022-11-03 01:48:47,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:48:47,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:48:47,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:48:47,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:48:47,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:48:47,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-03 01:48:47,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/data/9e0b9e095/f577d80e8c4b48ada3d0ac4263e96596/FLAGbde78aef9 [2022-11-03 01:48:48,546 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:48:48,548 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-03 01:48:48,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/data/9e0b9e095/f577d80e8c4b48ada3d0ac4263e96596/FLAGbde78aef9 [2022-11-03 01:48:49,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/data/9e0b9e095/f577d80e8c4b48ada3d0ac4263e96596 [2022-11-03 01:48:49,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:48:49,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:48:49,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:49,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:48:49,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:48:49,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:49" (1/1) ... [2022-11-03 01:48:49,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2ace01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:49, skipping insertion in model container [2022-11-03 01:48:49,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:49" (1/1) ... [2022-11-03 01:48:49,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:48:49,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:48:49,515 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_806fa596-de87-4357-8f04-c48f8a14745a/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-03 01:48:49,522 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_806fa596-de87-4357-8f04-c48f8a14745a/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-03 01:48:50,490 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,503 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,503 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,504 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,505 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,526 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,527 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,529 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,530 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:50,981 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:48:50,983 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:48:50,984 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:48:50,985 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:48:50,987 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:48:50,988 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:48:50,989 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:48:50,990 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:48:50,990 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:48:50,991 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:48:51,176 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:48:51,352 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,352 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:51,481 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:48:51,495 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_806fa596-de87-4357-8f04-c48f8a14745a/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-03 01:48:51,496 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_806fa596-de87-4357-8f04-c48f8a14745a/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-03 01:48:51,536 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,537 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,537 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,538 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,538 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,546 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,547 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,548 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,549 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-03 01:48:51,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-03 01:48:51,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-03 01:48:51,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-03 01:48:51,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-03 01:48:51,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-03 01:48:51,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-03 01:48:51,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-03 01:48:51,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-03 01:48:51,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-03 01:48:51,612 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-03 01:48:51,667 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,668 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-03 01:48:51,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:52,003 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:48:52,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52 WrapperNode [2022-11-03 01:48:52,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:52,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:52,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:48:52,005 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:48:52,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,235 INFO L138 Inliner]: procedures = 690, calls = 2615, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 766 [2022-11-03 01:48:52,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:52,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:48:52,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:48:52,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:48:52,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:48:52,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:48:52,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:48:52,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:48:52,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (1/1) ... [2022-11-03 01:48:52,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:52,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:48:52,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:48:52,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-03 01:48:52,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-03 01:48:52,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:48:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:48:52,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:48:52,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:48:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:48:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:48:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:48:52,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:48:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:48:52,468 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-03 01:48:52,468 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-03 01:48:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:48:52,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:48:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:48:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:48:52,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:48:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-03 01:48:52,470 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-03 01:48:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:48:52,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:48:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2022-11-03 01:48:52,471 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2022-11-03 01:48:52,832 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:48:52,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:48:54,217 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:48:54,454 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:48:54,455 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:48:54,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:54 BoogieIcfgContainer [2022-11-03 01:48:54,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:48:54,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:48:54,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:48:54,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:48:54,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:48:49" (1/3) ... [2022-11-03 01:48:54,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9658b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:54, skipping insertion in model container [2022-11-03 01:48:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:52" (2/3) ... [2022-11-03 01:48:54,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e9658b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:54, skipping insertion in model container [2022-11-03 01:48:54,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:54" (3/3) ... [2022-11-03 01:48:54,471 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2022-11-03 01:48:54,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:48:54,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:48:54,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:48:54,580 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;@59fca7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:48:54,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:48:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:48:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 01:48:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:54,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:54,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:54,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1091245793, now seen corresponding path program 1 times [2022-11-03 01:48:54,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:54,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928246633] [2022-11-03 01:48:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:54,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:49:07,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:07,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928246633] [2022-11-03 01:49:07,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928246633] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:07,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171414597] [2022-11-03 01:49:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:07,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:07,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:07,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:07,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:49:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:08,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 01:49:08,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:09,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 01:49:09,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 01:49:09,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:09,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 01:49:16,959 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:49:16,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 262 treesize of output 254 [2022-11-03 01:49:17,035 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:49:17,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 241 treesize of output 217 [2022-11-03 01:49:17,058 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:49:17,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 136 [2022-11-03 01:49:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:49:17,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:49:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171414597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:17,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:49:17,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 26 [2022-11-03 01:49:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691231398] [2022-11-03 01:49:17,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:17,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 01:49:17,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 01:49:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:49:17,972 INFO L87 Difference]: Start difference. First operand has 49 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:49:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:18,701 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2022-11-03 01:49:18,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 01:49:18,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 22 [2022-11-03 01:49:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:18,712 INFO L225 Difference]: With dead ends: 92 [2022-11-03 01:49:18,713 INFO L226 Difference]: Without dead ends: 52 [2022-11-03 01:49:18,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=84, Invalid=786, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:49:18,719 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:18,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 275 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 347 Invalid, 0 Unknown, 36 Unchecked, 0.5s Time] [2022-11-03 01:49:18,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-03 01:49:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-03 01:49:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 01:49:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-03 01:49:18,765 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 22 [2022-11-03 01:49:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:18,766 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-03 01:49:18,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:49:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-03 01:49:18,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-03 01:49:18,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:18,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:18,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:49:18,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 01:49:18,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:18,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:18,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2121451934, now seen corresponding path program 1 times [2022-11-03 01:49:18,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:18,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688290897] [2022-11-03 01:49:18,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:49:30,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:30,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688290897] [2022-11-03 01:49:30,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688290897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900818275] [2022-11-03 01:49:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:30,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:30,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:30,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_806fa596-de87-4357-8f04-c48f8a14745a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:49:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:32,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-03 01:49:32,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:33,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-03 01:49:33,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:49:33,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 01:49:59,928 WARN L234 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 97 DAG size of output: 96 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:50:00,288 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:00,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 498 treesize of output 610 [2022-11-03 01:50:00,537 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:00,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 442 treesize of output 546 [2022-11-03 01:50:01,181 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:50:01,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 84 case distinctions, treesize of input 378 treesize of output 562