./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- 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-e04fb08 [2022-11-16 11:45:07,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:45:07,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:45:07,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:45:07,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:45:07,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:45:07,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:45:07,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:45:07,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:45:07,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:45:07,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:45:07,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:45:07,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:45:07,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:45:07,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:45:07,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:45:07,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:45:07,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:45:07,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:45:07,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:45:07,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:45:07,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:45:07,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:45:07,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:45:07,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:45:07,345 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:45:07,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:45:07,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:45:07,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:45:07,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:45:07,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:45:07,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:45:07,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:45:07,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:45:07,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:45:07,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:45:07,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:45:07,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:45:07,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:45:07,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:45:07,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:45:07,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:45:07,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:45:07,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:45:07,415 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:45:07,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:45:07,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:45:07,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:45:07,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:45:07,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:45:07,417 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:45:07,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:45:07,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:45:07,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:45:07,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:45:07,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:45:07,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:45:07,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:45:07,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:45:07,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:45:07,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:45:07,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:45:07,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:45:07,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:07,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:45:07,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:45:07,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:45:07,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:45:07,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:45:07,422 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:45:07,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:45:07,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:45:07,422 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_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2022-11-16 11:45:07,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:45:07,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:45:07,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:45:07,835 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:45:07,838 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:45:07,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-16 11:45:07,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/data/00814bd89/a9b470f8cd4c412f9aa4482fce6a4de8/FLAG6917db64b [2022-11-16 11:45:09,000 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:45:09,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2022-11-16 11:45:09,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/data/00814bd89/a9b470f8cd4c412f9aa4482fce6a4de8/FLAG6917db64b [2022-11-16 11:45:09,372 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/data/00814bd89/a9b470f8cd4c412f9aa4482fce6a4de8 [2022-11-16 11:45:09,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:45:09,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:45:09,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:09,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:45:09,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:45:09,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:09" (1/1) ... [2022-11-16 11:45:09,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124fc0d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:09, skipping insertion in model container [2022-11-16 11:45:09,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:45:09" (1/1) ... [2022-11-16 11:45:09,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:45:09,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:45:09,972 WARN L229 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_2d6b8694-010a-4f4e-9985-3b45f8dd071a/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-16 11:45:09,981 WARN L229 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_2d6b8694-010a-4f4e-9985-3b45f8dd071a/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-16 11:45:11,151 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:45:11,268 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,269 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,271 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,272 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,279 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,299 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,300 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,302 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,303 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,305 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,306 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,307 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,315 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:45:11,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:45:11,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:45:11,780 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:45:11,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:45:11,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:45:11,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:45:11,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:45:11,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:45:11,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:45:11,965 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,965 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,971 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:11,980 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:12,144 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:45:12,175 WARN L229 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_2d6b8694-010a-4f4e-9985-3b45f8dd071a/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2022-11-16 11:45:12,182 WARN L229 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_2d6b8694-010a-4f4e-9985-3b45f8dd071a/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2022-11-16 11:45:12,261 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-16 11:45:12,282 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,295 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,295 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,296 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,297 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,312 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,312 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,315 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,315 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,318 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,319 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,320 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,320 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,396 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-16 11:45:12,400 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-16 11:45:12,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-16 11:45:12,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-16 11:45:12,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-16 11:45:12,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-16 11:45:12,408 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-16 11:45:12,409 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-16 11:45:12,410 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-16 11:45:12,411 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-16 11:45:12,460 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,461 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,462 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,467 WARN L1554 CHandler]: Possible shadowing of function index [2022-11-16 11:45:12,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:45:12,776 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:45:12,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12 WrapperNode [2022-11-16 11:45:12,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:45:12,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:12,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:45:12,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:45:12,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:12,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:12,979 INFO L138 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 649 [2022-11-16 11:45:12,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:45:12,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:45:12,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:45:12,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:45:13,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:45:13,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:45:13,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:45:13,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:45:13,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (1/1) ... [2022-11-16 11:45:13,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:45:13,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:13,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:45:13,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:45:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-16 11:45:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-16 11:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-16 11:45:13,221 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-16 11:45:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-16 11:45:13,222 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-16 11:45:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:45:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-16 11:45:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-16 11:45:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 11:45:13,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 11:45:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:45:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:45:13,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:45:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-16 11:45:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-16 11:45:13,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:45:13,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:45:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-16 11:45:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-16 11:45:13,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-16 11:45:13,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-16 11:45:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-16 11:45:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-16 11:45:13,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:45:13,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:45:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-16 11:45:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-16 11:45:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:45:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:45:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:45:13,228 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-16 11:45:13,228 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-16 11:45:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-16 11:45:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-16 11:45:13,229 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-16 11:45:13,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-16 11:45:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:45:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:45:13,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-16 11:45:13,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:45:13,648 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:45:13,650 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:45:14,979 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:45:14,988 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:45:14,988 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:45:14,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:14 BoogieIcfgContainer [2022-11-16 11:45:14,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:45:14,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:45:14,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:45:15,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:45:15,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:45:09" (1/3) ... [2022-11-16 11:45:15,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42cd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:15, skipping insertion in model container [2022-11-16 11:45:15,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:45:12" (2/3) ... [2022-11-16 11:45:15,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a42cd67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:45:15, skipping insertion in model container [2022-11-16 11:45:15,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:45:14" (3/3) ... [2022-11-16 11:45:15,010 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2022-11-16 11:45:15,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:45:15,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:45:15,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:45:15,143 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d6d51ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:45:15,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:45:15,149 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-16 11:45:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:45:15,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:15,168 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-11-16 11:45:15,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:15,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:15,178 INFO L85 PathProgramCache]: Analyzing trace with hash 223694820, now seen corresponding path program 1 times [2022-11-16 11:45:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:15,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167085145] [2022-11-16 11:45:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:15,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:45:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:45:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:45:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:45:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:45:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:45:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:45:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:45:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 11:45:16,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167085145] [2022-11-16 11:45:16,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167085145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:16,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:16,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:45:16,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636234903] [2022-11-16 11:45:16,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:16,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:45:16,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:45:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:16,238 INFO L87 Difference]: Start difference. First operand has 180 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 11:45:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:17,278 INFO L93 Difference]: Finished difference Result 380 states and 580 transitions. [2022-11-16 11:45:17,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:45:17,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2022-11-16 11:45:17,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:17,307 INFO L225 Difference]: With dead ends: 380 [2022-11-16 11:45:17,308 INFO L226 Difference]: Without dead ends: 202 [2022-11-16 11:45:17,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:45:17,321 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 50 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 283 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:45:17,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-16 11:45:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 175. [2022-11-16 11:45:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 98 states have (on average 1.1428571428571428) internal successors, (112), 99 states have internal predecessors, (112), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-16 11:45:17,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 233 transitions. [2022-11-16 11:45:17,393 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 233 transitions. Word has length 69 [2022-11-16 11:45:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:17,394 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 233 transitions. [2022-11-16 11:45:17,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 11:45:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 233 transitions. [2022-11-16 11:45:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:45:17,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:17,398 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 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] [2022-11-16 11:45:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:45:17,399 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:17,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -636522710, now seen corresponding path program 1 times [2022-11-16 11:45:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095238330] [2022-11-16 11:45:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:45:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:45:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:45:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:45:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:45:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:45:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:45:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:45:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:45:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:45:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:18,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095238330] [2022-11-16 11:45:18,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095238330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:45:18,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960471606] [2022-11-16 11:45:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:18,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:18,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:18,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:45:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:18,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:45:18,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:18,889 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:45:18,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:18,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960471606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:18,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:45:18,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-16 11:45:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845143625] [2022-11-16 11:45:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:45:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:45:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:18,894 INFO L87 Difference]: Start difference. First operand 175 states and 233 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:45:19,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:19,314 INFO L93 Difference]: Finished difference Result 315 states and 432 transitions. [2022-11-16 11:45:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:19,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2022-11-16 11:45:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:19,317 INFO L225 Difference]: With dead ends: 315 [2022-11-16 11:45:19,317 INFO L226 Difference]: Without dead ends: 177 [2022-11-16 11:45:19,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:19,319 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 232 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:19,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 647 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:45:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-16 11:45:19,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-16 11:45:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 101 states have internal predecessors, (113), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2022-11-16 11:45:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2022-11-16 11:45:19,344 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 242 transitions. Word has length 69 [2022-11-16 11:45:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:19,344 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 242 transitions. [2022-11-16 11:45:19,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-16 11:45:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 242 transitions. [2022-11-16 11:45:19,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 11:45:19,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:19,347 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2022-11-16 11:45:19,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:19,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:45:19,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -164009474, now seen corresponding path program 1 times [2022-11-16 11:45:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:19,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50451900] [2022-11-16 11:45:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:19,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:19,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098108188] [2022-11-16 11:45:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:19,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:19,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:19,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:19,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:45:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:45:20,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-16 11:45:20,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:45:20,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:20,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50451900] [2022-11-16 11:45:20,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:45:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098108188] [2022-11-16 11:45:20,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098108188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:20,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:20,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:45:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317928728] [2022-11-16 11:45:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:45:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:45:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:45:20,264 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:45:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:20,777 INFO L93 Difference]: Finished difference Result 326 states and 455 transitions. [2022-11-16 11:45:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:20,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 84 [2022-11-16 11:45:20,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:20,780 INFO L225 Difference]: With dead ends: 326 [2022-11-16 11:45:20,780 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 11:45:20,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:45:20,782 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 250 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:20,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 968 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:45:20,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 11:45:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-16 11:45:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 105 states have (on average 1.1428571428571428) internal successors, (120), 107 states have internal predecessors, (120), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2022-11-16 11:45:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 259 transitions. [2022-11-16 11:45:20,808 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 259 transitions. Word has length 84 [2022-11-16 11:45:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:20,808 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 259 transitions. [2022-11-16 11:45:20,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:45:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 259 transitions. [2022-11-16 11:45:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:45:20,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:20,813 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:45:20,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:21,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:21,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:21,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:21,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1494755288, now seen corresponding path program 1 times [2022-11-16 11:45:21,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567799884] [2022-11-16 11:45:21,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:21,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:21,101 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 11:45:21,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11903694] [2022-11-16 11:45:21,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:21,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:45:21,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:45:21,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:45:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d6b8694-010a-4f4e-9985-3b45f8dd071a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:45:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:21,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 231 conjunts are in the unsatisfiable core [2022-11-16 11:45:21,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:21,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 11:45:22,532 INFO L321 Elim1Store]: treesize reduction 44, result has 47.0 percent of original size [2022-11-16 11:45:22,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 48 [2022-11-16 11:45:42,380 INFO L321 Elim1Store]: treesize reduction 535, result has 28.8 percent of original size [2022-11-16 11:45:42,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 253 treesize of output 541 [2022-11-16 11:52:13,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:13,909 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:52:13,933 INFO L321 Elim1Store]: treesize reduction 47, result has 2.1 percent of original size [2022-11-16 11:52:13,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 7 [2022-11-16 11:59:42,174 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-16 11:59:42,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 19 [2022-11-16 11:59:42,249 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-16 11:59:42,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 350 treesize of output 313 [2022-11-16 11:59:42,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:42,907 INFO L321 Elim1Store]: treesize reduction 272, result has 28.4 percent of original size [2022-11-16 11:59:42,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 296 treesize of output 415 [2022-11-16 11:59:49,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:49,084 INFO L321 Elim1Store]: treesize reduction 187, result has 10.1 percent of original size [2022-11-16 11:59:49,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 97 treesize of output 44 [2022-11-16 11:59:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:50,683 INFO L321 Elim1Store]: treesize reduction 35, result has 2.8 percent of original size [2022-11-16 11:59:50,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11780 treesize of output 7172 [2022-11-16 11:59:50,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:50,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:50,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:50,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:50,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 40 [2022-11-16 11:59:50,986 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 11:59:50,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 3 [2022-11-16 11:59:51,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:59:51,016 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 11:59:51,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:51,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:51,245 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-16 11:59:51,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 3196 treesize of output 2066 [2022-11-16 11:59:53,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:53,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:53,748 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-16 11:59:53,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 24 [2022-11-16 11:59:53,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:59:53,763 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 11:59:53,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:53,847 INFO L321 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-11-16 11:59:53,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 2996 treesize of output 1874 [2022-11-16 11:59:54,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:54,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:54,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 24 [2022-11-16 11:59:54,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:54,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:54,961 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-16 11:59:54,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 27 [2022-11-16 11:59:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:59:55,633 INFO L321 Elim1Store]: treesize reduction 272, result has 28.4 percent of original size [2022-11-16 11:59:55,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 197 treesize of output 316