./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- 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-8393723 [2022-11-19 06:38:27,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:38:27,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:38:27,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:38:27,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:38:27,089 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:38:27,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:38:27,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:38:27,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:38:27,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:38:27,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:38:27,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:38:27,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:38:27,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:38:27,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:38:27,120 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:38:27,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:38:27,126 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:38:27,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:38:27,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:38:27,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:38:27,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:38:27,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:38:27,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:38:27,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:38:27,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:38:27,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:38:27,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:38:27,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:38:27,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:38:27,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:38:27,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:38:27,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:38:27,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:38:27,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:38:27,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:38:27,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:38:27,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:38:27,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:38:27,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:38:27,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:38:27,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:38:27,231 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:38:27,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:38:27,234 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:38:27,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:38:27,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:38:27,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:38:27,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:38:27,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:38:27,237 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:38:27,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:38:27,238 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:38:27,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:38:27,239 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:38:27,239 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:38:27,239 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:38:27,240 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:38:27,240 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:38:27,240 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:38:27,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:38:27,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:38:27,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:38:27,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:38:27,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:38:27,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:38:27,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:38:27,245 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:38:27,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:38:27,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:38:27,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:38:27,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:27,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:38:27,248 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:38:27,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:38:27,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:38:27,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:38:27,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:38:27,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:38:27,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:38:27,250 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2022-11-19 06:38:27,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:38:27,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:38:27,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:38:27,626 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:38:27,627 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:38:27,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:38:27,725 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/f595ae5c8/52d0b135ac2c44649879fb745447a9a1/FLAGb130702a8 [2022-11-19 06:38:28,859 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:38:28,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:38:28,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/f595ae5c8/52d0b135ac2c44649879fb745447a9a1/FLAGb130702a8 [2022-11-19 06:38:29,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/f595ae5c8/52d0b135ac2c44649879fb745447a9a1 [2022-11-19 06:38:29,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:38:29,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:38:29,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:29,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:38:29,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:38:29,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:29" (1/1) ... [2022-11-19 06:38:29,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20075ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:29, skipping insertion in model container [2022-11-19 06:38:29,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:29" (1/1) ... [2022-11-19 06:38:29,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:38:29,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:29,917 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2022-11-19 06:38:29,929 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2022-11-19 06:38:31,483 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,485 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,485 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,487 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,489 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,507 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,508 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,511 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:31,512 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:32,148 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:38:32,149 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:38:32,151 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:38:32,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:38:32,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:38:32,155 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:38:32,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:38:32,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:38:32,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:38:32,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:38:32,481 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:38:32,633 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:32,634 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,126 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,127 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,159 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,161 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,170 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,171 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,193 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,194 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,195 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,196 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,196 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,197 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,198 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:33,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:38:33,386 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2022-11-19 06:38:33,387 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2022-11-19 06:38:33,449 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,450 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,454 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,455 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,455 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,462 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,463 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,464 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,464 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:38:33,505 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:38:33,506 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:38:33,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:38:33,507 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:38:33,508 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:38:33,509 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:38:33,510 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:38:33,510 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:38:33,511 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:38:33,538 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:38:33,648 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,648 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,739 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,740 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,749 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,750 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,753 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,753 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,764 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,765 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,765 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,766 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,767 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,767 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,768 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:33,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:34,221 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:38:34,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34 WrapperNode [2022-11-19 06:38:34,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:34,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:34,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:38:34,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:38:34,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,478 INFO L138 Inliner]: procedures = 768, calls = 3252, calls flagged for inlining = 78, calls inlined = 5, statements flattened = 336 [2022-11-19 06:38:34,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:34,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:38:34,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:38:34,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:38:34,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,579 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:38:34,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:38:34,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:38:34,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:38:34,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (1/1) ... [2022-11-19 06:38:34,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:34,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:38:34,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:38:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 06:38:34,702 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 06:38:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:38:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:38:34,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:38:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:38:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:38:34,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:38:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:38:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 06:38:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 06:38:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:38:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:38:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:38:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 06:38:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 06:38:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2022-11-19 06:38:34,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2022-11-19 06:38:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2022-11-19 06:38:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2022-11-19 06:38:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:38:35,120 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:38:35,136 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:38:35,606 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2022-11-19 06:38:35,639 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:38:35,742 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:38:35,742 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:38:35,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:35 BoogieIcfgContainer [2022-11-19 06:38:35,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:38:35,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:38:35,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:38:35,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:38:35,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:38:29" (1/3) ... [2022-11-19 06:38:35,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9966d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:35, skipping insertion in model container [2022-11-19 06:38:35,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:34" (2/3) ... [2022-11-19 06:38:35,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9966d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:35, skipping insertion in model container [2022-11-19 06:38:35,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:35" (3/3) ... [2022-11-19 06:38:35,763 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:38:35,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:38:35,796 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:38:35,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:35,888 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;@122ba997, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:35,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:38:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-19 06:38:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 06:38:35,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:35,910 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] [2022-11-19 06:38:35,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2007445460, now seen corresponding path program 1 times [2022-11-19 06:38:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:35,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834397673] [2022-11-19 06:38:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:38:36,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834397673] [2022-11-19 06:38:36,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834397673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:36,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:36,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:38:36,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251877187] [2022-11-19 06:38:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:36,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:38:36,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:38:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:38:36,667 INFO L87 Difference]: Start difference. First operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:38:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:36,777 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-19 06:38:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:38:36,780 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 50 [2022-11-19 06:38:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:36,793 INFO L225 Difference]: With dead ends: 85 [2022-11-19 06:38:36,794 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:38:36,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:38:36,809 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:36,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:38:36,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:38:36,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-19 06:38:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.1) internal successors, (33), 31 states have internal predecessors, (33), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:38:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2022-11-19 06:38:36,882 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 50 [2022-11-19 06:38:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:36,886 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2022-11-19 06:38:36,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:38:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2022-11-19 06:38:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-19 06:38:36,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:36,893 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:38:36,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:36,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:36,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1782800097, now seen corresponding path program 1 times [2022-11-19 06:38:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:36,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807764051] [2022-11-19 06:38:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 06:38:38,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807764051] [2022-11-19 06:38:38,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807764051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 06:38:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605275626] [2022-11-19 06:38:38,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:38:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:38:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:38:38,323 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:38:38,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,786 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2022-11-19 06:38:38,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:38:38,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 52 [2022-11-19 06:38:38,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,793 INFO L225 Difference]: With dead ends: 78 [2022-11-19 06:38:38,793 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:38:38,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:38:38,803 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 495 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:38,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:38:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-19 06:38:38,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:38:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2022-11-19 06:38:38,821 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 52 [2022-11-19 06:38:38,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,822 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2022-11-19 06:38:38,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:38:38,823 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2022-11-19 06:38:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-19 06:38:38,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,825 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:38,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:38:38,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:38,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,826 INFO L85 PathProgramCache]: Analyzing trace with hash 17086336, now seen corresponding path program 1 times [2022-11-19 06:38:38,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824306409] [2022-11-19 06:38:38,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:40,363 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-19 06:38:40,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:40,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824306409] [2022-11-19 06:38:40,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824306409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:40,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-19 06:38:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304148351] [2022-11-19 06:38:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:38:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:40,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:38:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:38:40,372 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 06:38:41,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:41,022 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2022-11-19 06:38:41,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:38:41,023 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 56 [2022-11-19 06:38:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:41,028 INFO L225 Difference]: With dead ends: 86 [2022-11-19 06:38:41,028 INFO L226 Difference]: Without dead ends: 84 [2022-11-19 06:38:41,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:38:41,033 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 41 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:41,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 688 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:38:41,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-19 06:38:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2022-11-19 06:38:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 41 states have internal predecessors, (41), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-19 06:38:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 92 transitions. [2022-11-19 06:38:41,073 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 92 transitions. Word has length 56 [2022-11-19 06:38:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:41,074 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 92 transitions. [2022-11-19 06:38:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 06:38:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 92 transitions. [2022-11-19 06:38:41,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 06:38:41,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:41,077 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 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] [2022-11-19 06:38:41,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:38:41,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1027398026, now seen corresponding path program 1 times [2022-11-19 06:38:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:41,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712452786] [2022-11-19 06:38:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:41,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 06:38:42,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712452786] [2022-11-19 06:38:42,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712452786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:42,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:42,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 06:38:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142616934] [2022-11-19 06:38:42,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:42,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 06:38:42,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:42,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 06:38:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:38:42,825 INFO L87 Difference]: Start difference. First operand 74 states and 92 transitions. Second operand has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:38:43,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:43,294 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2022-11-19 06:38:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:38:43,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 64 [2022-11-19 06:38:43,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:43,297 INFO L225 Difference]: With dead ends: 90 [2022-11-19 06:38:43,297 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 06:38:43,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:38:43,299 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 40 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:43,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 681 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:43,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 06:38:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2022-11-19 06:38:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 47 states have internal predecessors, (47), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 06:38:43,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-11-19 06:38:43,317 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 64 [2022-11-19 06:38:43,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:43,318 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-11-19 06:38:43,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:38:43,318 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-11-19 06:38:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 06:38:43,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:43,321 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:43,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:38:43,322 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:43,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:43,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1591579472, now seen corresponding path program 1 times [2022-11-19 06:38:43,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:43,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287230787] [2022-11-19 06:38:43,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:44,734 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-19 06:38:44,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:44,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287230787] [2022-11-19 06:38:44,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287230787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:44,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:44,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:38:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300737549] [2022-11-19 06:38:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:44,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:38:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:38:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:38:44,738 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:38:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:45,222 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2022-11-19 06:38:45,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:38:45,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) Word has length 79 [2022-11-19 06:38:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:45,228 INFO L225 Difference]: With dead ends: 94 [2022-11-19 06:38:45,229 INFO L226 Difference]: Without dead ends: 92 [2022-11-19 06:38:45,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:38:45,230 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 15 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:45,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 986 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-19 06:38:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2022-11-19 06:38:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 50 states have internal predecessors, (50), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 06:38:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2022-11-19 06:38:45,267 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 79 [2022-11-19 06:38:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:45,268 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2022-11-19 06:38:45,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:38:45,271 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2022-11-19 06:38:45,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 06:38:45,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:45,279 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:45,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:38:45,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -886361530, now seen corresponding path program 1 times [2022-11-19 06:38:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:45,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378321260] [2022-11-19 06:38:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:46,752 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-19 06:38:46,753 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:46,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378321260] [2022-11-19 06:38:46,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378321260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:46,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:46,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:38:46,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787040265] [2022-11-19 06:38:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:46,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:38:46,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:46,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:38:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:38:46,755 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 06:38:47,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:47,108 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2022-11-19 06:38:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:38:47,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2022-11-19 06:38:47,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:47,114 INFO L225 Difference]: With dead ends: 92 [2022-11-19 06:38:47,114 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 06:38:47,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:38:47,118 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 546 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 06:38:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 63. [2022-11-19 06:38:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:38:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-11-19 06:38:47,148 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 87 [2022-11-19 06:38:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:47,153 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-11-19 06:38:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 06:38:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-11-19 06:38:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-19 06:38:47,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:47,160 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:47,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:38:47,160 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1344876461, now seen corresponding path program 1 times [2022-11-19 06:38:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:47,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260254317] [2022-11-19 06:38:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:47,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 06:38:49,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:49,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260254317] [2022-11-19 06:38:49,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260254317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:49,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:49,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:38:49,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262535471] [2022-11-19 06:38:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:38:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:49,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:38:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:38:49,259 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 06:38:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:49,675 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2022-11-19 06:38:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:38:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 78 [2022-11-19 06:38:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:49,680 INFO L225 Difference]: With dead ends: 94 [2022-11-19 06:38:49,680 INFO L226 Difference]: Without dead ends: 63 [2022-11-19 06:38:49,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:38:49,682 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 38 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:49,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 702 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:38:49,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-19 06:38:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-19 06:38:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 35 states have (on average 1.0) internal successors, (35), 35 states have internal predecessors, (35), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:38:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2022-11-19 06:38:49,704 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 78 [2022-11-19 06:38:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:49,705 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2022-11-19 06:38:49,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 06:38:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2022-11-19 06:38:49,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 06:38:49,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:49,716 INFO L195 NwaCegarLoop]: trace histogram [9, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:49,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:38:49,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:38:49,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:49,717 INFO L85 PathProgramCache]: Analyzing trace with hash -228044931, now seen corresponding path program 1 times [2022-11-19 06:38:49,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:49,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580761936] [2022-11-19 06:38:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:49,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:50,262 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:38:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:38:50,672 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:38:50,672 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:38:50,674 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:38:50,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:38:50,681 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:50,687 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:38:50,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:38:50 BoogieIcfgContainer [2022-11-19 06:38:50,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:38:50,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:38:50,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:38:50,812 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:38:50,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:35" (3/4) ... [2022-11-19 06:38:50,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:38:50,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:38:50,817 INFO L158 Benchmark]: Toolchain (without parser) took 21596.50ms. Allocated memory was 136.3MB in the beginning and 427.8MB in the end (delta: 291.5MB). Free memory was 90.9MB in the beginning and 226.2MB in the end (delta: -135.4MB). Peak memory consumption was 154.6MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,817 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:38:50,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5000.27ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 90.6MB in the beginning and 111.9MB in the end (delta: -21.3MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,818 INFO L158 Benchmark]: Boogie Procedure Inliner took 257.22ms. Allocated memory is still 174.1MB. Free memory was 111.9MB in the beginning and 100.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,819 INFO L158 Benchmark]: Boogie Preprocessor took 119.07ms. Allocated memory is still 174.1MB. Free memory was 100.4MB in the beginning and 96.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,819 INFO L158 Benchmark]: RCFGBuilder took 1144.59ms. Allocated memory was 174.1MB in the beginning and 245.4MB in the end (delta: 71.3MB). Free memory was 96.2MB in the beginning and 172.9MB in the end (delta: -76.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,819 INFO L158 Benchmark]: TraceAbstraction took 15059.03ms. Allocated memory was 245.4MB in the beginning and 427.8MB in the end (delta: 182.5MB). Free memory was 171.8MB in the beginning and 226.2MB in the end (delta: -54.4MB). Peak memory consumption was 128.1MB. Max. memory is 16.1GB. [2022-11-19 06:38:50,820 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 427.8MB. Free memory is still 226.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:38:50,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.8MB in the end (delta: 39.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5000.27ms. Allocated memory was 136.3MB in the beginning and 174.1MB in the end (delta: 37.7MB). Free memory was 90.6MB in the beginning and 111.9MB in the end (delta: -21.3MB). Peak memory consumption was 88.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 257.22ms. Allocated memory is still 174.1MB. Free memory was 111.9MB in the beginning and 100.4MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 119.07ms. Allocated memory is still 174.1MB. Free memory was 100.4MB in the beginning and 96.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1144.59ms. Allocated memory was 174.1MB in the beginning and 245.4MB in the end (delta: 71.3MB). Free memory was 96.2MB in the beginning and 172.9MB in the end (delta: -76.7MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15059.03ms. Allocated memory was 245.4MB in the beginning and 427.8MB in the end (delta: 182.5MB). Free memory was 171.8MB in the beginning and 226.2MB in the end (delta: -54.4MB). Peak memory consumption was 128.1MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 427.8MB. Free memory is still 226.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-18446744073709551615, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-2:0}, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-2:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-2:0}, str[cap - 1]=0] [L6839] return str; [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-2:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={-2:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=-18446744073709551552, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, size=64] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={-3:0}, cap=64, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-3:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=64, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-3:0}, str[cap - 1]=0] [L6839] return str; [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={-2:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={-3:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={-3:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={-2:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-2:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={-3:0}] [L6272] return str && ((((1)) == 0) || ((str))); [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={-2:0}, a={-2:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] return rval; VAL [\result=1, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, len=36028797018963966, nondet_uint64_t()=18482772870728515581, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, b={-3:0}, b={-3:0}, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=36028797018963966, a={-2:0}, a={-2:0}, a[i]=257, b={-3:0}, b={-3:0}, b[i]=0, i=36028797018963965, len=36028797018963966, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.8s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 189 mSDsluCounter, 4166 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3725 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1622 IncrementalHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 441 mSDtfsCounter, 1622 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=86occurred in iteration=5, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 567 NumberOfCodeBlocks, 567 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 1373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 334/334 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:38:50,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS --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 e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 --- 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-8393723 [2022-11-19 06:38:53,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:38:53,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:38:53,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:38:53,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:38:53,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:38:53,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:38:53,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:38:53,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:38:53,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:38:53,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:38:53,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:38:53,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:38:53,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:38:53,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:38:53,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:38:53,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:38:53,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:38:53,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:38:53,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:38:53,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:38:53,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:38:53,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:38:53,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:38:53,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:38:53,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:38:53,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:38:53,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:38:53,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:38:53,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:38:53,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:38:53,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:38:53,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:38:53,559 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:38:53,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:38:53,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:38:53,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:38:53,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:38:53,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:38:53,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:38:53,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:38:53,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 06:38:53,604 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:38:53,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:38:53,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:38:53,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:38:53,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:38:53,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:38:53,607 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:38:53,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:38:53,608 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:38:53,610 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:38:53,611 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:38:53,611 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:38:53,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:38:53,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:38:53,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:38:53,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:38:53,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:38:53,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:38:53,619 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:38:53,620 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:38:53,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:38:53,620 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:38:53,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:38:53,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:38:53,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:38:53,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:38:53,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:53,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:38:53,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:38:53,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:38:53,623 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:38:53,623 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:38:53,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:38:53,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:38:53,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:38:53,625 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2319232de809c5fc7a2ae9b5bcaacd5710dfa5ecc8cc9afebba783e154bd6e0 [2022-11-19 06:38:54,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:38:54,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:38:54,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:38:54,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:38:54,147 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:38:54,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:38:54,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/d37d54298/5528b7054df64481828b9a4e2703176e/FLAG1b89b5535 [2022-11-19 06:38:55,335 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:38:55,336 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:38:55,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/d37d54298/5528b7054df64481828b9a4e2703176e/FLAG1b89b5535 [2022-11-19 06:38:55,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/data/d37d54298/5528b7054df64481828b9a4e2703176e [2022-11-19 06:38:55,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:38:55,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:38:55,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:55,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:38:55,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:38:55,681 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:55" (1/1) ... [2022-11-19 06:38:55,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474f60bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:55, skipping insertion in model container [2022-11-19 06:38:55,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:55" (1/1) ... [2022-11-19 06:38:55,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:38:55,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:56,417 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2022-11-19 06:38:56,430 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2022-11-19 06:38:57,868 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,869 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,870 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,871 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,873 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,911 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,912 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,914 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:57,915 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:58,572 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:38:58,575 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:38:58,577 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:38:58,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:38:58,585 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:38:58,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:38:58,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:38:58,596 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:38:58,598 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:38:58,601 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:38:58,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:38:58,988 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:58,989 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,347 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,348 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,377 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,379 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,393 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,394 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,415 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,416 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,417 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,418 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,419 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,420 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,421 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:59,633 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 06:38:59,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:59,720 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2022-11-19 06:38:59,721 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2022-11-19 06:38:59,818 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,819 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,819 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,820 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,821 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,828 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,828 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,829 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,830 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:38:59,890 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:38:59,891 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:38:59,892 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:38:59,893 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:38:59,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:38:59,894 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:38:59,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:38:59,895 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:38:59,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:38:59,896 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:38:59,921 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:38:59,996 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,001 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,144 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,144 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,153 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,153 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,156 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,157 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,165 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,166 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,167 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,167 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,168 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,169 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,170 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:00,286 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:39:00,312 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4500,4513] [2022-11-19 06:39:00,321 WARN L234 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_218a5577-18fc-4c94-aca8-b537e5e1d28e/sv-benchmarks/c/aws-c-common/aws_hash_callback_c_str_eq_harness.i[4560,4573] [2022-11-19 06:39:00,368 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,369 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,369 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,370 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,371 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,376 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,377 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,379 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,379 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-19 06:39:00,420 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-19 06:39:00,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-19 06:39:00,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-19 06:39:00,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-19 06:39:00,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-19 06:39:00,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-19 06:39:00,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-19 06:39:00,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-19 06:39:00,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-19 06:39:00,451 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-19 06:39:00,575 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,575 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,716 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,716 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,725 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,726 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,730 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,730 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,740 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,741 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,742 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,743 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,744 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,745 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,745 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-19 06:39:00,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:39:01,126 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:39:01,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01 WrapperNode [2022-11-19 06:39:01,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:39:01,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:01,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:39:01,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:39:01,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,413 INFO L138 Inliner]: procedures = 788, calls = 3252, calls flagged for inlining = 80, calls inlined = 5, statements flattened = 337 [2022-11-19 06:39:01,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:39:01,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:39:01,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:39:01,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:39:01,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,518 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:39:01,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:39:01,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:39:01,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:39:01,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (1/1) ... [2022-11-19 06:39:01,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:39:01,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:01,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:39:01,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:39:01,643 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-19 06:39:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-19 06:39:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:39:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:39:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:39:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:39:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:39:01,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:39:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-19 06:39:01,651 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-19 06:39:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-19 06:39:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-19 06:39:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:39:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-19 06:39:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:39:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:39:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:39:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_c_str_is_allocated [2022-11-19 06:39:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_c_str_is_allocated [2022-11-19 06:39:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_c_string_is_valid [2022-11-19 06:39:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_c_string_is_valid [2022-11-19 06:39:02,122 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:39:02,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:39:02,732 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2022-11-19 06:39:02,748 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:39:02,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:39:02,757 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:39:02,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:02 BoogieIcfgContainer [2022-11-19 06:39:02,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:39:02,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:39:02,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:39:02,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:39:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:38:55" (1/3) ... [2022-11-19 06:39:02,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbdfbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:02, skipping insertion in model container [2022-11-19 06:39:02,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:39:01" (2/3) ... [2022-11-19 06:39:02,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbdfbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:39:02, skipping insertion in model container [2022-11-19 06:39:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:02" (3/3) ... [2022-11-19 06:39:02,771 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_callback_c_str_eq_harness.i [2022-11-19 06:39:02,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:39:02,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:39:02,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:39:02,857 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;@3570f239, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:39:02,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:39:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-19 06:39:02,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 06:39:02,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:02,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:02,877 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1163022186, now seen corresponding path program 1 times [2022-11-19 06:39:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:02,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733812867] [2022-11-19 06:39:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:02,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:02,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:02,909 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:02,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:39:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:03,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:39:03,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 06:39:03,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:03,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:03,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733812867] [2022-11-19 06:39:03,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733812867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:03,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:03,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:39:03,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742046524] [2022-11-19 06:39:03,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:03,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:39:03,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:03,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:39:03,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:39:03,589 INFO L87 Difference]: Start difference. First operand has 71 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:39:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:03,627 INFO L93 Difference]: Finished difference Result 139 states and 186 transitions. [2022-11-19 06:39:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:39:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 67 [2022-11-19 06:39:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:03,639 INFO L225 Difference]: With dead ends: 139 [2022-11-19 06:39:03,639 INFO L226 Difference]: Without dead ends: 65 [2022-11-19 06:39:03,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:39:03,647 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:39:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-19 06:39:03,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-19 06:39:03,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 39 states have internal predecessors, (41), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:39:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2022-11-19 06:39:03,699 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 67 [2022-11-19 06:39:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:03,700 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2022-11-19 06:39:03,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-19 06:39:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2022-11-19 06:39:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-19 06:39:03,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:03,705 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:03,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:03,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:03,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:03,927 INFO L85 PathProgramCache]: Analyzing trace with hash -447828983, now seen corresponding path program 1 times [2022-11-19 06:39:03,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:03,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864969336] [2022-11-19 06:39:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:03,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:03,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:03,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:39:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:04,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:39:04,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-19 06:39:04,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:04,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864969336] [2022-11-19 06:39:04,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864969336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:04,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:04,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 06:39:04,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699520813] [2022-11-19 06:39:04,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:04,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:39:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:39:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:39:04,822 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:39:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:05,292 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2022-11-19 06:39:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:39:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 70 [2022-11-19 06:39:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:05,296 INFO L225 Difference]: With dead ends: 89 [2022-11-19 06:39:05,296 INFO L226 Difference]: Without dead ends: 65 [2022-11-19 06:39:05,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:39:05,298 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:05,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 641 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:39:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-19 06:39:05,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-19 06:39:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:39:05,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2022-11-19 06:39:05,313 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 70 [2022-11-19 06:39:05,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:05,314 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2022-11-19 06:39:05,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 9 states have internal predecessors, (31), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-19 06:39:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2022-11-19 06:39:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-19 06:39:05,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:05,317 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:05,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:05,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:05,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1505925942, now seen corresponding path program 1 times [2022-11-19 06:39:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:05,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481343868] [2022-11-19 06:39:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:05,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:05,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 06:39:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:05,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 06:39:05,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-19 06:39:06,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:06,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:06,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481343868] [2022-11-19 06:39:06,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481343868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:06,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:06,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-19 06:39:06,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641460042] [2022-11-19 06:39:06,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:06,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-19 06:39:06,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:06,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-19 06:39:06,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:39:06,388 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 06:39:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:07,084 INFO L93 Difference]: Finished difference Result 94 states and 115 transitions. [2022-11-19 06:39:07,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:39:07,085 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 75 [2022-11-19 06:39:07,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:07,087 INFO L225 Difference]: With dead ends: 94 [2022-11-19 06:39:07,087 INFO L226 Difference]: Without dead ends: 92 [2022-11-19 06:39:07,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:39:07,089 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 42 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:07,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 875 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:39:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-19 06:39:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 82. [2022-11-19 06:39:07,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 49 states have internal predecessors, (49), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-19 06:39:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-11-19 06:39:07,109 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 75 [2022-11-19 06:39:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:07,110 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-11-19 06:39:07,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-19 06:39:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-11-19 06:39:07,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 06:39:07,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:07,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2022-11-19 06:39:07,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:07,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:07,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:07,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:07,336 INFO L85 PathProgramCache]: Analyzing trace with hash -892933696, now seen corresponding path program 1 times [2022-11-19 06:39:07,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:07,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320572781] [2022-11-19 06:39:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:07,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:07,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:07,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:07,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 06:39:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:07,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:39:07,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-19 06:39:08,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:08,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:08,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320572781] [2022-11-19 06:39:08,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320572781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:08,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:08,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 06:39:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308995258] [2022-11-19 06:39:08,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:08,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 06:39:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 06:39:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:39:08,189 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:39:08,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:08,663 INFO L93 Difference]: Finished difference Result 98 states and 118 transitions. [2022-11-19 06:39:08,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:39:08,664 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 83 [2022-11-19 06:39:08,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:08,666 INFO L225 Difference]: With dead ends: 98 [2022-11-19 06:39:08,666 INFO L226 Difference]: Without dead ends: 96 [2022-11-19 06:39:08,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-19 06:39:08,668 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 37 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:08,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 841 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:39:08,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-19 06:39:08,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2022-11-19 06:39:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 55 states have internal predecessors, (55), 27 states have call successors, (27), 9 states have call predecessors, (27), 9 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 06:39:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2022-11-19 06:39:08,691 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 83 [2022-11-19 06:39:08,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:08,691 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2022-11-19 06:39:08,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 10 states have internal predecessors, (36), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:39:08,692 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2022-11-19 06:39:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-19 06:39:08,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:08,694 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:08,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:08,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:08,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:08,916 INFO L85 PathProgramCache]: Analyzing trace with hash 829878033, now seen corresponding path program 1 times [2022-11-19 06:39:08,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:08,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541819767] [2022-11-19 06:39:08,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:08,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:08,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:08,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:39:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:09,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:39:09,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-19 06:39:09,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:09,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:09,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541819767] [2022-11-19 06:39:09,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541819767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:09,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:09,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:39:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637337913] [2022-11-19 06:39:09,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:09,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:39:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:39:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:39:09,600 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:39:10,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:10,166 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2022-11-19 06:39:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:39:10,167 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2022-11-19 06:39:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:10,169 INFO L225 Difference]: With dead ends: 102 [2022-11-19 06:39:10,169 INFO L226 Difference]: Without dead ends: 100 [2022-11-19 06:39:10,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:39:10,171 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 16 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:10,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1160 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:39:10,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-19 06:39:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2022-11-19 06:39:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 58 states have internal predecessors, (58), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-19 06:39:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2022-11-19 06:39:10,190 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 107 [2022-11-19 06:39:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:10,191 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2022-11-19 06:39:10,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 6 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-19 06:39:10,192 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2022-11-19 06:39:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 06:39:10,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:10,194 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:10,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:10,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:10,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:10,417 INFO L85 PathProgramCache]: Analyzing trace with hash 265370887, now seen corresponding path program 1 times [2022-11-19 06:39:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:10,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201681909] [2022-11-19 06:39:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:10,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:10,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:10,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 06:39:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:10,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:39:10,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-19 06:39:11,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:11,311 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:11,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201681909] [2022-11-19 06:39:11,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201681909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:11,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:11,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:39:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916371893] [2022-11-19 06:39:11,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:11,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:39:11,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:11,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:39:11,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:39:11,316 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 06:39:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:11,826 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2022-11-19 06:39:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 06:39:11,827 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 115 [2022-11-19 06:39:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:11,831 INFO L225 Difference]: With dead ends: 100 [2022-11-19 06:39:11,831 INFO L226 Difference]: Without dead ends: 96 [2022-11-19 06:39:11,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-19 06:39:11,833 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 27 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:11,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 739 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:39:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-19 06:39:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-11-19 06:39:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:39:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-11-19 06:39:11,865 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 115 [2022-11-19 06:39:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:11,867 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-11-19 06:39:11,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 10 states have internal predecessors, (37), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 06:39:11,868 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-11-19 06:39:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 06:39:11,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:11,872 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:11,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:12,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:12,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:12,107 INFO L85 PathProgramCache]: Analyzing trace with hash -565706850, now seen corresponding path program 1 times [2022-11-19 06:39:12,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:12,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556304707] [2022-11-19 06:39:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:12,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:12,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:12,110 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:12,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 06:39:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:12,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-19 06:39:12,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:12,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-19 06:39:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-19 06:39:12,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:39:12,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:39:12,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556304707] [2022-11-19 06:39:12,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556304707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:39:12,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:39:12,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:39:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374662116] [2022-11-19 06:39:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:39:12,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:39:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:39:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:39:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:39:12,872 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 06:39:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:13,197 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2022-11-19 06:39:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 06:39:13,198 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 100 [2022-11-19 06:39:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:13,200 INFO L225 Difference]: With dead ends: 102 [2022-11-19 06:39:13,200 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 06:39:13,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-19 06:39:13,202 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 10 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:13,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 537 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:39:13,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 06:39:13,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-19 06:39:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0) internal successors, (43), 43 states have internal predecessors, (43), 19 states have call successors, (19), 9 states have call predecessors, (19), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-19 06:39:13,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2022-11-19 06:39:13,231 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 100 [2022-11-19 06:39:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:13,231 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2022-11-19 06:39:13,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 06:39:13,232 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2022-11-19 06:39:13,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 06:39:13,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:13,234 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:13,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:13,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:13,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:39:13,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash -549207241, now seen corresponding path program 1 times [2022-11-19 06:39:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:39:13,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411266372] [2022-11-19 06:39:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:13,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:13,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:39:13,459 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:39:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 06:39:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:39:14,522 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:39:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:39:17,258 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-19 06:39:17,258 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:39:17,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:39:17,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:17,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:39:17,492 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:39:17,496 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:39:17,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:39:17 BoogieIcfgContainer [2022-11-19 06:39:17,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:39:17,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:39:17,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:39:17,632 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:39:17,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:39:02" (3/4) ... [2022-11-19 06:39:17,636 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:39:17,637 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:39:17,637 INFO L158 Benchmark]: Toolchain (without parser) took 21966.97ms. Allocated memory was 58.7MB in the beginning and 287.3MB in the end (delta: 228.6MB). Free memory was 26.7MB in the beginning and 218.0MB in the end (delta: -191.2MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,638 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 58.7MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:39:17,638 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5452.27ms. Allocated memory was 58.7MB in the beginning and 209.7MB in the end (delta: 151.0MB). Free memory was 26.6MB in the beginning and 147.9MB in the end (delta: -121.4MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 288.44ms. Allocated memory is still 209.7MB. Free memory was 147.9MB in the beginning and 137.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,639 INFO L158 Benchmark]: Boogie Preprocessor took 113.38ms. Allocated memory is still 209.7MB. Free memory was 137.4MB in the beginning and 131.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,639 INFO L158 Benchmark]: RCFGBuilder took 1228.27ms. Allocated memory is still 209.7MB. Free memory was 131.2MB in the beginning and 80.8MB in the end (delta: 50.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,640 INFO L158 Benchmark]: TraceAbstraction took 14868.39ms. Allocated memory was 209.7MB in the beginning and 287.3MB in the end (delta: 77.6MB). Free memory was 80.8MB in the beginning and 218.0MB in the end (delta: -137.2MB). Peak memory consumption was 78.2MB. Max. memory is 16.1GB. [2022-11-19 06:39:17,640 INFO L158 Benchmark]: Witness Printer took 4.91ms. Allocated memory is still 287.3MB. Free memory is still 218.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:39:17,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 58.7MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5452.27ms. Allocated memory was 58.7MB in the beginning and 209.7MB in the end (delta: 151.0MB). Free memory was 26.6MB in the beginning and 147.9MB in the end (delta: -121.4MB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 288.44ms. Allocated memory is still 209.7MB. Free memory was 147.9MB in the beginning and 137.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 113.38ms. Allocated memory is still 209.7MB. Free memory was 137.4MB in the beginning and 131.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1228.27ms. Allocated memory is still 209.7MB. Free memory was 131.2MB in the beginning and 80.8MB in the end (delta: 50.4MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14868.39ms. Allocated memory was 209.7MB in the beginning and 287.3MB in the end (delta: 77.6MB). Free memory was 80.8MB in the beginning and 218.0MB in the end (delta: -137.2MB). Peak memory consumption was 78.2MB. Max. memory is 16.1GB. * Witness Printer took 4.91ms. Allocated memory is still 287.3MB. Free memory is still 218.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of strcmp at line 10798, overapproximation of strlen at line 11324. Possible FailurePath: [L6879-L6884] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7634-L7646] static const uint8_t s_tolower_table[256] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 91, 92, 93, 94, 95, 96, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255}; VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L11328] CALL aws_hash_callback_c_str_eq_harness() [L11318] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={12:0}, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={12:0}, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}] [L11318] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={12:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L11318] const char *str1 = ensure_c_str_is_allocated(64); [L11319] CALL, EXPR nondet_bool() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L261] return __VERIFIER_nondet_bool(); [L11319] RET, EXPR nondet_bool() VAL [nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={12:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={12:0}] [L11319] CALL, EXPR ensure_c_str_is_allocated(64) VAL [\old(max_size)=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L6832] RET, EXPR nondet_uint64_t() VAL [\old(max_size)=64, max_size=64, nondet_uint64_t()=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6832] size_t cap = nondet_uint64_t(); [L6833] CALL assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6833] RET assume_abort_if_not(cap > 0 && cap <= max_size) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] CALL, EXPR bounded_malloc(cap) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] CALL assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6896-L6898] RET assume_abort_if_not(size <= ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(size)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, size=1] [L6899] return malloc(size); [L6834] RET, EXPR bounded_malloc(cap) VAL [\old(max_size)=64, bounded_malloc(cap)={7:0}, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6834] const char *str = bounded_malloc(cap); [L6838] EXPR str[cap - 1] VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}, str[cap - 1]=0] [L6838] CALL assume_abort_if_not(str[cap - 1] == 0) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L6838] RET assume_abort_if_not(str[cap - 1] == 0) VAL [\old(max_size)=64, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}, str[cap - 1]=0] [L6839] return str; VAL [\old(max_size)=64, \result={7:0}, cap=1, max_size=64, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}] [L11319] RET, EXPR ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={7:0}, nondet_bool()=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={12:0}] [L11319] EXPR nondet_bool() ? str1 : ensure_c_str_is_allocated(64) VAL [ensure_c_str_is_allocated(64)={7:0}, nondet_bool()=0, nondet_bool() ? str1 : ensure_c_str_is_allocated(64)={7:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str1={12:0}] [L11319] const char *str2 = nondet_bool() ? str1 : ensure_c_str_is_allocated(64); [L11322] CALL, EXPR aws_hash_callback_c_str_eq(str1, str2) [L10794] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}, str={12:0}] [L10794] RET, EXPR aws_c_string_is_valid(a) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, b={7:0}, b={7:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10794] CALL assume_abort_if_not((aws_c_string_is_valid(a))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10794] RET assume_abort_if_not((aws_c_string_is_valid(a))) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, b={7:0}, b={7:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10795] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}, str={7:0}] [L10795] RET, EXPR aws_c_string_is_valid(b) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10795] CALL assume_abort_if_not((aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10795] RET assume_abort_if_not((aws_c_string_is_valid(b))) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10797-L10798] _Bool rval = !strcmp(a, b); [L10799] CALL, EXPR aws_c_string_is_valid(a) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={12:0}, str={12:0}] [L10799] RET, EXPR aws_c_string_is_valid(a) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] CALL, EXPR aws_c_string_is_valid(b) VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}] [L6272] return str && ((((1)) == 0) || ((str))); VAL [\result=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}, str={7:0}, str={7:0}] [L10799] RET, EXPR aws_c_string_is_valid(b) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] EXPR aws_c_string_is_valid(a) && aws_c_string_is_valid(b) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] CALL __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] RET __VERIFIER_assert((aws_c_string_is_valid(a) && aws_c_string_is_valid(b))) VAL [a={12:0}, a={12:0}, aws_c_string_is_valid(a)=1, aws_c_string_is_valid(a) && aws_c_string_is_valid(b)=1, aws_c_string_is_valid(b)=1, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L10799] return rval; VAL [\result=1, a={12:0}, a={12:0}, b={7:0}, b={7:0}, rval=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L11322] RET, EXPR aws_hash_callback_c_str_eq(str1, str2) [L11321-L11322] _Bool rval = aws_hash_callback_c_str_eq(str1, str2); [L11323] COND TRUE \read(rval) [L11324] size_t len = strlen(str1); [L11325] CALL assert_bytes_match(str1, str2, len) [L7113] CALL __VERIFIER_assert(!a == !b) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7113] RET __VERIFIER_assert(!a == !b) VAL [\old(len)=1073750016, a={12:0}, a={12:0}, b={7:0}, b={7:0}, len=1073750016, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7114-L7117] COND TRUE len > 0 && a != ((void *)0) && b != ((void *)0) VAL [\old(len)=1073750016, a={12:0}, a={12:0}, b={7:0}, b={7:0}, len=1073750016, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7119] CALL, EXPR nondet_uint64_t() VAL [s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L266] return __VERIFIER_nondet_ulong(); [L7119] RET, EXPR nondet_uint64_t() VAL [\old(len)=1073750016, a={12:0}, a={12:0}, b={7:0}, b={7:0}, len=1073750016, nondet_uint64_t()=1073741824, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7119] size_t i = nondet_uint64_t(); [L7120-L7122] CALL assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7120-L7122] RET assume_abort_if_not(i < len && len < ( (18446744073709551615UL) >> (8 + 1))) VAL [\old(len)=1073750016, a={12:0}, a={12:0}, b={7:0}, b={7:0}, i=1073741824, len=1073750016, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7123] EXPR a[i] [L7123] EXPR b[i] VAL [\old(len)=1073750016, a={12:0}, a={12:0}, a[i]=0, b={7:0}, b={7:0}, b[i]=48, i=1073741824, len=1073750016, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L7123] CALL __VERIFIER_assert(a[i] == b[i]) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] COND TRUE !cond VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] [L223] reach_error() VAL [\old(cond)=0, cond=0, s_can_fail_allocator_static={4:0}, s_tolower_table={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.7s, OverallIterations: 8, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 4879 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4332 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1094 IncrementalHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 547 mSDtfsCounter, 1094 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 636 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, InterpolantAutomatonStates: 81, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 749 NumberOfCodeBlocks, 749 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 610 ConstructedInterpolants, 0 QuantifiedInterpolants, 1351 SizeOfPredicates, 55 NumberOfNonLiveVariables, 3207 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 597/597 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:39:17,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_218a5577-18fc-4c94-aca8-b537e5e1d28e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample