./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R --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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --- 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-38b53e6 [2022-11-25 17:42:10,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:42:10,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:42:10,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:42:10,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:42:10,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:42:10,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:42:10,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:42:10,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:42:10,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:42:10,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:42:10,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:42:10,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:42:10,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:42:10,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:42:10,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:42:10,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:42:10,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:42:10,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:42:10,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:42:10,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:42:10,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:42:10,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:42:10,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:42:10,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:42:10,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:42:10,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:42:10,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:42:10,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:42:10,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:42:10,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:42:10,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:42:10,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:42:10,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:42:10,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:42:10,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:42:10,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:42:10,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:42:10,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:42:10,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:42:10,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:42:10,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-25 17:42:10,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:42:10,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:42:10,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:42:10,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:42:10,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:42:10,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:42:10,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:42:10,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:42:10,491 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:42:10,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:42:10,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:42:10,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:42:10,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:42:10,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:42:10,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:42:10,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:42:10,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:42:10,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:42:10,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:42:10,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:42:10,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:42:10,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:10,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:42:10,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:42:10,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:42:10,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:42:10,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:42:10,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:42:10,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:42:10,497 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:42:10,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:42:10,498 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 [2022-11-25 17:42:10,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:42:10,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:42:10,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:42:10,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:42:10,899 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:42:10,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-11-25 17:42:14,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:42:14,545 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:42:14,546 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2022-11-25 17:42:14,596 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/data/542f00564/3e6815a7757e45e2b970b08029fcc3cb/FLAGf7888f086 [2022-11-25 17:42:14,619 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/data/542f00564/3e6815a7757e45e2b970b08029fcc3cb [2022-11-25 17:42:14,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:42:14,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:42:14,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:14,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:42:14,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:42:14,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:14" (1/1) ... [2022-11-25 17:42:14,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44821a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:14, skipping insertion in model container [2022-11-25 17:42:14,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:42:14" (1/1) ... [2022-11-25 17:42:14,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:42:14,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:42:15,174 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-11-25 17:42:15,186 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-11-25 17:42:16,125 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 17:42:16,184 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,200 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,207 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,209 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,209 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,210 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,212 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,218 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,234 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,234 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,236 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,237 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,328 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:16,329 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:16,330 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:16,335 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 17:42:16,337 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 17:42:16,338 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 17:42:16,496 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,649 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 17:42:16,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 17:42:16,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 17:42:16,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 17:42:16,654 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 17:42:16,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 17:42:16,657 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 17:42:16,658 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 17:42:16,659 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 17:42:16,662 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 17:42:16,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 17:42:16,837 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,840 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,841 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,842 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:16,870 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:16,896 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 17:42:16,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:16,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:42:16,948 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4501,4514] [2022-11-25 17:42:16,949 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i[4561,4574] [2022-11-25 17:42:16,988 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-25 17:42:16,996 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,004 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,008 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,009 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,010 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,011 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,014 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,020 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,021 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,023 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,034 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:17,034 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:17,035 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-11-25 17:42:17,039 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-11-25 17:42:17,041 WARN L623 FunctionHandler]: Unknown extern function htons [2022-11-25 17:42:17,042 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-11-25 17:42:17,046 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,074 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-11-25 17:42:17,075 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-25 17:42:17,076 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-25 17:42:17,077 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-25 17:42:17,078 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-25 17:42:17,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-25 17:42:17,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-25 17:42:17,081 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-25 17:42:17,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-25 17:42:17,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-25 17:42:17,083 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-25 17:42:17,120 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,122 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,124 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,124 WARN L1576 CHandler]: Possible shadowing of function index [2022-11-25 17:42:17,205 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-11-25 17:42:17,274 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-11-25 17:42:17,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:42:17,503 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:42:17,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17 WrapperNode [2022-11-25 17:42:17,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:42:17,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:17,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:42:17,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:42:17,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,696 INFO L138 Inliner]: procedures = 689, calls = 1496, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 597 [2022-11-25 17:42:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:42:17,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:42:17,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:42:17,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:42:17,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,792 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:42:17,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:42:17,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:42:17,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:42:17,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (1/1) ... [2022-11-25 17:42:17,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:42:17,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:17,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:42:17,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:42:17,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-25 17:42:17,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-25 17:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-25 17:42:17,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-25 17:42:17,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-25 17:42:17,957 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-25 17:42:17,957 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-25 17:42:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-25 17:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-25 17:42:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-25 17:42:17,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 17:42:17,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 17:42:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:42:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:42:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 17:42:17,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:42:17,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:42:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2022-11-25 17:42:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2022-11-25 17:42:17,960 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-25 17:42:17,960 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-25 17:42:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-25 17:42:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-25 17:42:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-25 17:42:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-25 17:42:17,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-25 17:42:17,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-25 17:42:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-25 17:42:17,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-25 17:42:17,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:42:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 17:42:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 17:42:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-25 17:42:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-25 17:42:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-25 17:42:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-25 17:42:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:42:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-11-25 17:42:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-11-25 17:42:17,966 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-11-25 17:42:17,970 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-11-25 17:42:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-25 17:42:17,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-25 17:42:17,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:42:18,354 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:42:18,357 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:42:19,400 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:42:19,413 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:42:19,413 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:42:19,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:19 BoogieIcfgContainer [2022-11-25 17:42:19,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:42:19,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:42:19,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:42:19,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:42:19,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:42:14" (1/3) ... [2022-11-25 17:42:19,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bfc943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:19, skipping insertion in model container [2022-11-25 17:42:19,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:42:17" (2/3) ... [2022-11-25 17:42:19,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10bfc943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:42:19, skipping insertion in model container [2022-11-25 17:42:19,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:42:19" (3/3) ... [2022-11-25 17:42:19,438 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2022-11-25 17:42:19,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:42:19,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:42:19,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:42:19,554 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;@3b1ed0d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:42:19,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:42:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-25 17:42:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 17:42:19,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:19,596 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1] [2022-11-25 17:42:19,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:19,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 432166812, now seen corresponding path program 1 times [2022-11-25 17:42:19,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:19,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785660209] [2022-11-25 17:42:19,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:42:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:42:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 17:42:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:42:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:20,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:42:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:42:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:42:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:42:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-25 17:42:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-25 17:42:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 17:42:20,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:20,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785660209] [2022-11-25 17:42:20,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785660209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:20,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:20,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204558225] [2022-11-25 17:42:20,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:20,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:20,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:20,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:20,862 INFO L87 Difference]: Start difference. First operand has 165 states, 112 states have (on average 1.2678571428571428) internal successors, (142), 113 states have internal predecessors, (142), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:42:21,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:21,590 INFO L93 Difference]: Finished difference Result 361 states and 504 transitions. [2022-11-25 17:42:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:21,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 105 [2022-11-25 17:42:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:21,606 INFO L225 Difference]: With dead ends: 361 [2022-11-25 17:42:21,606 INFO L226 Difference]: Without dead ends: 202 [2022-11-25 17:42:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:21,618 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 89 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:21,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 255 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 17:42:21,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-25 17:42:21,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 160. [2022-11-25 17:42:21,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.233644859813084) internal successors, (132), 109 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-25 17:42:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 201 transitions. [2022-11-25 17:42:21,716 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 201 transitions. Word has length 105 [2022-11-25 17:42:21,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:21,716 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 201 transitions. [2022-11-25 17:42:21,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 17:42:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 201 transitions. [2022-11-25 17:42:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 17:42:21,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:21,728 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:42:21,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:21,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672400, now seen corresponding path program 1 times [2022-11-25 17:42:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:21,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800784878] [2022-11-25 17:42:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:21,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:42:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:42:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 17:42:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:42:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:42:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:42:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:42:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:42:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:42:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-25 17:42:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:42:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:22,836 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-25 17:42:22,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:22,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800784878] [2022-11-25 17:42:22,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800784878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:22,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:22,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:42:22,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331698547] [2022-11-25 17:42:22,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:22,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:42:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:42:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:42:22,841 INFO L87 Difference]: Start difference. First operand 160 states and 201 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:42:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:23,855 INFO L93 Difference]: Finished difference Result 341 states and 448 transitions. [2022-11-25 17:42:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:42:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 122 [2022-11-25 17:42:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:23,860 INFO L225 Difference]: With dead ends: 341 [2022-11-25 17:42:23,865 INFO L226 Difference]: Without dead ends: 245 [2022-11-25 17:42:23,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:42:23,869 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 282 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:23,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 543 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 17:42:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-25 17:42:23,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2022-11-25 17:42:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.2242990654205608) internal successors, (131), 109 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-25 17:42:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2022-11-25 17:42:23,898 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 122 [2022-11-25 17:42:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:23,898 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2022-11-25 17:42:23,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 17:42:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2022-11-25 17:42:23,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-25 17:42:23,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:23,901 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:23,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:42:23,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2103837312, now seen corresponding path program 1 times [2022-11-25 17:42:23,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:23,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319077705] [2022-11-25 17:42:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:42:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:42:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 17:42:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 17:42:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:42:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-25 17:42:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-25 17:42:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:42:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-25 17:42:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-25 17:42:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:42:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-25 17:42:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:42:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:24,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-25 17:42:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-25 17:42:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-25 17:42:25,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:25,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319077705] [2022-11-25 17:42:25,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319077705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:25,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:25,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 17:42:25,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460755513] [2022-11-25 17:42:25,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:25,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 17:42:25,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:25,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 17:42:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:42:25,033 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 17:42:26,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:26,324 INFO L93 Difference]: Finished difference Result 371 states and 489 transitions. [2022-11-25 17:42:26,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:42:26,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 130 [2022-11-25 17:42:26,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:26,328 INFO L225 Difference]: With dead ends: 371 [2022-11-25 17:42:26,328 INFO L226 Difference]: Without dead ends: 226 [2022-11-25 17:42:26,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:42:26,330 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 243 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:26,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 790 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 17:42:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-25 17:42:26,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 162. [2022-11-25 17:42:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 111 states have internal predecessors, (132), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-25 17:42:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 203 transitions. [2022-11-25 17:42:26,359 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 203 transitions. Word has length 130 [2022-11-25 17:42:26,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:26,361 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 203 transitions. [2022-11-25 17:42:26,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 17:42:26,362 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 203 transitions. [2022-11-25 17:42:26,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-25 17:42:26,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:26,365 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:26,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:42:26,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash -209170488, now seen corresponding path program 1 times [2022-11-25 17:42:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:26,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669956542] [2022-11-25 17:42:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:26,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:26,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877755894] [2022-11-25 17:42:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:26,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:26,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:26,472 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:26,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:42:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:27,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2424 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 17:42:27,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-25 17:42:27,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669956542] [2022-11-25 17:42:27,311 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877755894] [2022-11-25 17:42:27,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877755894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:27,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:27,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:42:27,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592816671] [2022-11-25 17:42:27,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:42:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:42:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:27,315 INFO L87 Difference]: Start difference. First operand 162 states and 203 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-25 17:42:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:27,571 INFO L93 Difference]: Finished difference Result 261 states and 324 transitions. [2022-11-25 17:42:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:42:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 145 [2022-11-25 17:42:27,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:27,574 INFO L225 Difference]: With dead ends: 261 [2022-11-25 17:42:27,574 INFO L226 Difference]: Without dead ends: 162 [2022-11-25 17:42:27,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:42:27,576 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 235 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:27,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 781 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:42:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-25 17:42:27,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-25 17:42:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2022-11-25 17:42:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 202 transitions. [2022-11-25 17:42:27,603 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 202 transitions. Word has length 145 [2022-11-25 17:42:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:27,605 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 202 transitions. [2022-11-25 17:42:27,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-25 17:42:27,606 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 202 transitions. [2022-11-25 17:42:27,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-25 17:42:27,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:27,612 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:27,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:27,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:27,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:27,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:27,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1337604585, now seen corresponding path program 1 times [2022-11-25 17:42:27,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:27,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889213057] [2022-11-25 17:42:27,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:27,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:27,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:27,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019214621] [2022-11-25 17:42:27,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:27,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:27,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:27,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:42:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:28,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:42:28,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-25 17:42:28,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:28,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889213057] [2022-11-25 17:42:28,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:28,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019214621] [2022-11-25 17:42:28,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019214621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:28,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:28,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:42:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581072602] [2022-11-25 17:42:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:28,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:42:28,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:42:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:28,667 INFO L87 Difference]: Start difference. First operand 162 states and 202 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 17:42:29,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:29,050 INFO L93 Difference]: Finished difference Result 274 states and 342 transitions. [2022-11-25 17:42:29,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:42:29,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2022-11-25 17:42:29,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:29,052 INFO L225 Difference]: With dead ends: 274 [2022-11-25 17:42:29,053 INFO L226 Difference]: Without dead ends: 162 [2022-11-25 17:42:29,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:42:29,054 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 300 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:29,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1041 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:42:29,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-25 17:42:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-25 17:42:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.212962962962963) internal successors, (131), 111 states have internal predecessors, (131), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-25 17:42:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2022-11-25 17:42:29,071 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 161 [2022-11-25 17:42:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:29,072 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2022-11-25 17:42:29,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-25 17:42:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2022-11-25 17:42:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 17:42:29,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:29,076 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:29,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:29,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:29,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:29,288 INFO L85 PathProgramCache]: Analyzing trace with hash 996052163, now seen corresponding path program 1 times [2022-11-25 17:42:29,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:29,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267752420] [2022-11-25 17:42:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:29,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:29,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:29,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835557936] [2022-11-25 17:42:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:29,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:29,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:29,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:42:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:30,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:42:30,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:30,201 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-25 17:42:30,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:30,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267752420] [2022-11-25 17:42:30,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:30,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835557936] [2022-11-25 17:42:30,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835557936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:30,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:30,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:42:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819557164] [2022-11-25 17:42:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:30,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:42:30,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:30,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:42:30,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:42:30,205 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:30,524 INFO L93 Difference]: Finished difference Result 286 states and 356 transitions. [2022-11-25 17:42:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:42:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-25 17:42:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:30,530 INFO L225 Difference]: With dead ends: 286 [2022-11-25 17:42:30,531 INFO L226 Difference]: Without dead ends: 180 [2022-11-25 17:42:30,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:30,532 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 23 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:30,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 893 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:42:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-25 17:42:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2022-11-25 17:42:30,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 112 states have (on average 1.2142857142857142) internal successors, (136), 115 states have internal predecessors, (136), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-25 17:42:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 206 transitions. [2022-11-25 17:42:30,549 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 206 transitions. Word has length 176 [2022-11-25 17:42:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:30,549 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 206 transitions. [2022-11-25 17:42:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 206 transitions. [2022-11-25 17:42:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 17:42:30,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:30,553 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:30,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:42:30,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:30,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 28701509, now seen corresponding path program 1 times [2022-11-25 17:42:30,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:30,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728531898] [2022-11-25 17:42:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:30,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:30,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:30,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696812138] [2022-11-25 17:42:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:30,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:30,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:30,865 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:30,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:42:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:31,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2634 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:42:31,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-25 17:42:31,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:31,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:31,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728531898] [2022-11-25 17:42:31,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:31,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696812138] [2022-11-25 17:42:31,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696812138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:31,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:31,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585914632] [2022-11-25 17:42:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:31,583 INFO L87 Difference]: Start difference. First operand 166 states and 206 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:31,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:31,626 INFO L93 Difference]: Finished difference Result 274 states and 339 transitions. [2022-11-25 17:42:31,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:42:31,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-25 17:42:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:31,628 INFO L225 Difference]: With dead ends: 274 [2022-11-25 17:42:31,628 INFO L226 Difference]: Without dead ends: 170 [2022-11-25 17:42:31,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:31,630 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:31,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 583 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:31,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-25 17:42:31,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2022-11-25 17:42:31,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 117 states have internal predecessors, (138), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-25 17:42:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2022-11-25 17:42:31,646 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 176 [2022-11-25 17:42:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:31,647 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2022-11-25 17:42:31,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2022-11-25 17:42:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 17:42:31,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:31,650 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:31,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:31,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:42:31,861 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:31,861 INFO L85 PathProgramCache]: Analyzing trace with hash -463924665, now seen corresponding path program 1 times [2022-11-25 17:42:31,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:31,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028985645] [2022-11-25 17:42:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:31,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:31,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:31,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546029068] [2022-11-25 17:42:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:31,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:31,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:31,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:31,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:42:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:32,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:42:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-25 17:42:32,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-25 17:42:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:33,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028985645] [2022-11-25 17:42:33,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:33,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546029068] [2022-11-25 17:42:33,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546029068] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:33,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:33,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-25 17:42:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536261017] [2022-11-25 17:42:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:42:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:42:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:42:33,013 INFO L87 Difference]: Start difference. First operand 168 states and 208 transitions. Second operand has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 17:42:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:33,081 INFO L93 Difference]: Finished difference Result 178 states and 222 transitions. [2022-11-25 17:42:33,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:42:33,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 176 [2022-11-25 17:42:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:33,085 INFO L225 Difference]: With dead ends: 178 [2022-11-25 17:42:33,085 INFO L226 Difference]: Without dead ends: 176 [2022-11-25 17:42:33,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:42:33,087 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 6 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:33,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 970 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-25 17:42:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2022-11-25 17:42:33,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 122 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-25 17:42:33,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 219 transitions. [2022-11-25 17:42:33,110 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 219 transitions. Word has length 176 [2022-11-25 17:42:33,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:33,111 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 219 transitions. [2022-11-25 17:42:33,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-25 17:42:33,112 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 219 transitions. [2022-11-25 17:42:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 17:42:33,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:33,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:33,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:33,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:33,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1104137534, now seen corresponding path program 1 times [2022-11-25 17:42:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431980337] [2022-11-25 17:42:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:33,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:33,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26784039] [2022-11-25 17:42:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:33,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:33,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:33,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:33,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:42:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:34,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 17:42:34,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-25 17:42:34,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:34,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431980337] [2022-11-25 17:42:34,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:34,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26784039] [2022-11-25 17:42:34,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26784039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:34,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:34,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:42:34,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828708385] [2022-11-25 17:42:34,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:34,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:42:34,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:34,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:42:34,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:42:34,276 INFO L87 Difference]: Start difference. First operand 175 states and 219 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-25 17:42:34,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:34,361 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2022-11-25 17:42:34,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:42:34,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 176 [2022-11-25 17:42:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:34,366 INFO L225 Difference]: With dead ends: 281 [2022-11-25 17:42:34,367 INFO L226 Difference]: Without dead ends: 175 [2022-11-25 17:42:34,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:42:34,370 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:34,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 944 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:34,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-25 17:42:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-25 17:42:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 118 states have (on average 1.194915254237288) internal successors, (141), 122 states have internal predecessors, (141), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-25 17:42:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 218 transitions. [2022-11-25 17:42:34,392 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 218 transitions. Word has length 176 [2022-11-25 17:42:34,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:34,393 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 218 transitions. [2022-11-25 17:42:34,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-25 17:42:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 218 transitions. [2022-11-25 17:42:34,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-25 17:42:34,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:34,397 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:34,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:34,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:34,608 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1406424536, now seen corresponding path program 1 times [2022-11-25 17:42:34,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:34,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202078355] [2022-11-25 17:42:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:34,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:34,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:34,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48595578] [2022-11-25 17:42:34,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:34,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:34,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:34,709 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:34,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:42:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:35,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 17:42:35,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-25 17:42:35,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:35,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:35,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202078355] [2022-11-25 17:42:35,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:35,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48595578] [2022-11-25 17:42:35,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48595578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:35,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:35,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:42:35,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822350004] [2022-11-25 17:42:35,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:42:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:42:35,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:35,503 INFO L87 Difference]: Start difference. First operand 175 states and 218 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-25 17:42:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:35,601 INFO L93 Difference]: Finished difference Result 283 states and 351 transitions. [2022-11-25 17:42:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:42:35,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 177 [2022-11-25 17:42:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:35,604 INFO L225 Difference]: With dead ends: 283 [2022-11-25 17:42:35,605 INFO L226 Difference]: Without dead ends: 177 [2022-11-25 17:42:35,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:35,606 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 18 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:35,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 942 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:42:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-25 17:42:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2022-11-25 17:42:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 123 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-25 17:42:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 219 transitions. [2022-11-25 17:42:35,625 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 219 transitions. Word has length 177 [2022-11-25 17:42:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:35,628 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 219 transitions. [2022-11-25 17:42:35,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 7 states have internal predecessors, (85), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-11-25 17:42:35,629 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 219 transitions. [2022-11-25 17:42:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 17:42:35,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:35,633 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:35,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:35,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:35,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:35,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1080671750, now seen corresponding path program 1 times [2022-11-25 17:42:35,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:35,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060188200] [2022-11-25 17:42:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:35,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:35,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1587502035] [2022-11-25 17:42:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:35,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:35,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:35,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:35,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:42:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:36,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 17:42:36,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-25 17:42:36,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:36,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:36,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060188200] [2022-11-25 17:42:36,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:36,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587502035] [2022-11-25 17:42:36,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587502035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:36,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:36,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:36,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056161473] [2022-11-25 17:42:36,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:36,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:36,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:36,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:36,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:36,697 INFO L87 Difference]: Start difference. First operand 176 states and 219 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:36,770 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2022-11-25 17:42:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-11-25 17:42:36,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:36,775 INFO L225 Difference]: With dead ends: 293 [2022-11-25 17:42:36,776 INFO L226 Difference]: Without dead ends: 181 [2022-11-25 17:42:36,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:36,777 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 7 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:36,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 559 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-25 17:42:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2022-11-25 17:42:36,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 124 states have internal predecessors, (143), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-11-25 17:42:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 220 transitions. [2022-11-25 17:42:36,794 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 220 transitions. Word has length 179 [2022-11-25 17:42:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:36,796 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 220 transitions. [2022-11-25 17:42:36,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:36,796 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 220 transitions. [2022-11-25 17:42:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 17:42:36,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:36,800 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:36,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:42:37,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:42:37,011 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:37,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 712361510, now seen corresponding path program 1 times [2022-11-25 17:42:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:37,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954355280] [2022-11-25 17:42:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:37,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:37,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:37,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754566277] [2022-11-25 17:42:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:37,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:37,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:42:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:37,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-25 17:42:37,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:38,140 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 11 treesize of output 5 [2022-11-25 17:42:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-25 17:42:38,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954355280] [2022-11-25 17:42:38,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:38,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754566277] [2022-11-25 17:42:38,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754566277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:38,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:38,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 17:42:38,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610623954] [2022-11-25 17:42:38,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 17:42:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 17:42:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:42:38,184 INFO L87 Difference]: Start difference. First operand 177 states and 220 transitions. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-25 17:42:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:38,810 INFO L93 Difference]: Finished difference Result 326 states and 410 transitions. [2022-11-25 17:42:38,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:42:38,811 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 179 [2022-11-25 17:42:38,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:38,813 INFO L225 Difference]: With dead ends: 326 [2022-11-25 17:42:38,813 INFO L226 Difference]: Without dead ends: 205 [2022-11-25 17:42:38,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:42:38,814 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 115 mSDsluCounter, 1438 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:38,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1617 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:42:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-25 17:42:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 186. [2022-11-25 17:42:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 128 states have (on average 1.1953125) internal successors, (153), 132 states have internal predecessors, (153), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 36 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2022-11-25 17:42:38,831 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 179 [2022-11-25 17:42:38,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:38,832 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2022-11-25 17:42:38,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 6 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-25 17:42:38,832 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2022-11-25 17:42:38,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-25 17:42:38,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:38,836 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:38,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:39,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:39,044 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1965868264, now seen corresponding path program 1 times [2022-11-25 17:42:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:39,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722148786] [2022-11-25 17:42:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:39,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:39,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51263337] [2022-11-25 17:42:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:39,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:39,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:39,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:39,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:42:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:39,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:42:39,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-25 17:42:40,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:40,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722148786] [2022-11-25 17:42:40,115 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:40,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51263337] [2022-11-25 17:42:40,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51263337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:40,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:40,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:42:40,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820065714] [2022-11-25 17:42:40,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:42:40,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:42:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:42:40,118 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:40,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:40,425 INFO L93 Difference]: Finished difference Result 304 states and 382 transitions. [2022-11-25 17:42:40,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:42:40,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 179 [2022-11-25 17:42:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:40,427 INFO L225 Difference]: With dead ends: 304 [2022-11-25 17:42:40,428 INFO L226 Difference]: Without dead ends: 195 [2022-11-25 17:42:40,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-25 17:42:40,429 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 7 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:40,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1284 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:42:40,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-25 17:42:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2022-11-25 17:42:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 133 states have internal predecessors, (155), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2022-11-25 17:42:40,445 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 179 [2022-11-25 17:42:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:40,445 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2022-11-25 17:42:40,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:40,446 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2022-11-25 17:42:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-25 17:42:40,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:40,449 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:40,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:40,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:42:40,662 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:40,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:40,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1941254556, now seen corresponding path program 1 times [2022-11-25 17:42:40,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:40,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835645585] [2022-11-25 17:42:40,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:40,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:40,769 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:40,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451074705] [2022-11-25 17:42:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:40,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:40,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:40,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:42:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:41,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:42:41,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-11-25 17:42:41,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835645585] [2022-11-25 17:42:41,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451074705] [2022-11-25 17:42:41,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451074705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:41,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:41,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 17:42:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766643687] [2022-11-25 17:42:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:41,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:42:41,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:41,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:42:41,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:41,586 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:41,629 INFO L93 Difference]: Finished difference Result 216 states and 268 transitions. [2022-11-25 17:42:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:42:41,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-11-25 17:42:41,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:41,631 INFO L225 Difference]: With dead ends: 216 [2022-11-25 17:42:41,631 INFO L226 Difference]: Without dead ends: 189 [2022-11-25 17:42:41,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:41,632 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:41,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 771 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-25 17:42:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-25 17:42:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 131 states have (on average 1.1908396946564885) internal successors, (156), 133 states have internal predecessors, (156), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 236 transitions. [2022-11-25 17:42:41,648 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 236 transitions. Word has length 182 [2022-11-25 17:42:41,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:41,649 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 236 transitions. [2022-11-25 17:42:41,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 236 transitions. [2022-11-25 17:42:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-25 17:42:41,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:41,653 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:41,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:41,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash -101731212, now seen corresponding path program 2 times [2022-11-25 17:42:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:41,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745894557] [2022-11-25 17:42:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:41,943 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:41,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [73219066] [2022-11-25 17:42:41,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:42:41,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:41,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:41,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:41,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 17:42:42,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:42:42,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:42:42,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:42:42,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-25 17:42:43,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:43,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745894557] [2022-11-25 17:42:43,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:43,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73219066] [2022-11-25 17:42:43,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73219066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:43,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:43,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:42:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913636297] [2022-11-25 17:42:43,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:43,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:42:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:42:43,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:43,096 INFO L87 Difference]: Start difference. First operand 189 states and 236 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:43,410 INFO L93 Difference]: Finished difference Result 324 states and 402 transitions. [2022-11-25 17:42:43,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:42:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-11-25 17:42:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:43,413 INFO L225 Difference]: With dead ends: 324 [2022-11-25 17:42:43,413 INFO L226 Difference]: Without dead ends: 205 [2022-11-25 17:42:43,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:42:43,414 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 12 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:43,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1105 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:42:43,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-25 17:42:43,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 199. [2022-11-25 17:42:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 143 states have internal predecessors, (168), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:43,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 248 transitions. [2022-11-25 17:42:43,428 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 248 transitions. Word has length 185 [2022-11-25 17:42:43,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:43,428 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 248 transitions. [2022-11-25 17:42:43,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:43,428 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 248 transitions. [2022-11-25 17:42:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-25 17:42:43,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:43,430 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:43,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:43,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:42:43,642 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1980862158, now seen corresponding path program 1 times [2022-11-25 17:42:43,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:43,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389974510] [2022-11-25 17:42:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:43,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:43,736 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:43,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167727188] [2022-11-25 17:42:43,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:43,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:43,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:43,738 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:43,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 17:42:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:44,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 17:42:44,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:44,551 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-25 17:42:44,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:44,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389974510] [2022-11-25 17:42:44,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:44,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167727188] [2022-11-25 17:42:44,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167727188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:44,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:44,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 17:42:44,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891607532] [2022-11-25 17:42:44,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:44,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:42:44,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:44,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:42:44,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:42:44,555 INFO L87 Difference]: Start difference. First operand 199 states and 248 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:44,641 INFO L93 Difference]: Finished difference Result 328 states and 406 transitions. [2022-11-25 17:42:44,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:42:44,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-11-25 17:42:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:44,644 INFO L225 Difference]: With dead ends: 328 [2022-11-25 17:42:44,644 INFO L226 Difference]: Without dead ends: 209 [2022-11-25 17:42:44,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:42:44,646 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 15 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:44,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1144 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-25 17:42:44,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 193. [2022-11-25 17:42:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 135 states have (on average 1.1851851851851851) internal successors, (160), 137 states have internal predecessors, (160), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 240 transitions. [2022-11-25 17:42:44,664 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 240 transitions. Word has length 185 [2022-11-25 17:42:44,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:44,666 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 240 transitions. [2022-11-25 17:42:44,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 240 transitions. [2022-11-25 17:42:44,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-25 17:42:44,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:44,668 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:44,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:44,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:42:44,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:44,880 INFO L85 PathProgramCache]: Analyzing trace with hash 382427316, now seen corresponding path program 1 times [2022-11-25 17:42:44,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:44,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50251333] [2022-11-25 17:42:44,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:44,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:44,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:44,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59566628] [2022-11-25 17:42:44,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:44,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:44,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:44,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:44,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 17:42:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:45,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:42:45,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-25 17:42:45,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:45,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50251333] [2022-11-25 17:42:45,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:45,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59566628] [2022-11-25 17:42:45,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59566628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:45,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:45,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:45,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368025659] [2022-11-25 17:42:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:45,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:45,720 INFO L87 Difference]: Start difference. First operand 193 states and 240 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:45,763 INFO L93 Difference]: Finished difference Result 339 states and 427 transitions. [2022-11-25 17:42:45,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:42:45,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-11-25 17:42:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:45,766 INFO L225 Difference]: With dead ends: 339 [2022-11-25 17:42:45,766 INFO L226 Difference]: Without dead ends: 193 [2022-11-25 17:42:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:42:45,767 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 7 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:45,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 586 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 17:42:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-25 17:42:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-11-25 17:42:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 137 states have internal predecessors, (159), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-25 17:42:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 239 transitions. [2022-11-25 17:42:45,787 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 239 transitions. Word has length 185 [2022-11-25 17:42:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:45,787 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 239 transitions. [2022-11-25 17:42:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-25 17:42:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 239 transitions. [2022-11-25 17:42:45,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-25 17:42:45,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:45,790 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:42:45,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 17:42:46,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:42:46,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:46,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:46,002 INFO L85 PathProgramCache]: Analyzing trace with hash -908019048, now seen corresponding path program 1 times [2022-11-25 17:42:46,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:46,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404902221] [2022-11-25 17:42:46,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:46,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:46,109 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:42:46,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838332057] [2022-11-25 17:42:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:46,111 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:46,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 17:42:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:46,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2677 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-25 17:42:46,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:46,869 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 [2022-11-25 17:42:47,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2022-11-25 17:42:49,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:42:49,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 17:42:52,449 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1772 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1772) |c_#memory_int|)) is different from true [2022-11-25 17:42:52,569 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int) (v_ArrVal_1772 (Array Int Int))) (and (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_1772) |c_#memory_int|))) (let ((.cse0 (= 0 (mod (select (select |c_#memory_int| |c_aws_array_list_is_valid_#in~list.base|) (+ |c_aws_array_list_is_valid_#in~list.offset| 8)) 18446744073709551616)))) (or (and .cse0 |c_aws_array_list_is_valid_#t~short129|) (and (not .cse0) (not |c_aws_array_list_is_valid_#t~short129|))))) is different from true [2022-11-25 17:42:53,274 INFO L321 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-11-25 17:42:53,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 125 treesize of output 1 [2022-11-25 17:42:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 52 proven. 18 refuted. 3 times theorem prover too weak. 42 trivial. 4 not checked. [2022-11-25 17:42:53,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:42:54,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404902221] [2022-11-25 17:42:54,030 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:42:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838332057] [2022-11-25 17:42:54,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838332057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:54,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:54,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-25 17:42:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553294603] [2022-11-25 17:42:54,031 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:42:54,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 17:42:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 17:42:54,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=807, Unknown=29, NotChecked=118, Total=1056 [2022-11-25 17:42:54,033 INFO L87 Difference]: Start difference. First operand 193 states and 239 transitions. Second operand has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-25 17:43:16,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:43:18,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:43:20,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:43:25,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:43:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:32,410 INFO L93 Difference]: Finished difference Result 703 states and 944 transitions. [2022-11-25 17:43:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-25 17:43:32,417 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) Word has length 187 [2022-11-25 17:43:32,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:32,427 INFO L225 Difference]: With dead ends: 703 [2022-11-25 17:43:32,427 INFO L226 Difference]: Without dead ends: 588 [2022-11-25 17:43:32,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 224 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=509, Invalid=4638, Unknown=117, NotChecked=286, Total=5550 [2022-11-25 17:43:32,433 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 1149 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 5239 mSolverCounterSat, 688 mSolverCounterUnsat, 291 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 2326 SdHoareTripleChecker+Invalid, 7172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 688 IncrementalHoareTripleChecker+Valid, 5239 IncrementalHoareTripleChecker+Invalid, 291 IncrementalHoareTripleChecker+Unknown, 954 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:32,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1164 Valid, 2326 Invalid, 7172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [688 Valid, 5239 Invalid, 291 Unknown, 954 Unchecked, 21.2s Time] [2022-11-25 17:43:32,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-25 17:43:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 466. [2022-11-25 17:43:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 331 states have (on average 1.1933534743202416) internal successors, (395), 339 states have internal predecessors, (395), 84 states have call successors, (84), 41 states have call predecessors, (84), 50 states have return successors, (137), 87 states have call predecessors, (137), 82 states have call successors, (137) [2022-11-25 17:43:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 616 transitions. [2022-11-25 17:43:32,507 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 616 transitions. Word has length 187 [2022-11-25 17:43:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:32,508 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 616 transitions. [2022-11-25 17:43:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 4.214285714285714) internal successors, (118), 27 states have internal predecessors, (118), 12 states have call successors, (26), 7 states have call predecessors, (26), 12 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-25 17:43:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 616 transitions. [2022-11-25 17:43:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 17:43:32,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:32,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:43:32,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:32,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 17:43:32,725 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:32,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1752761233, now seen corresponding path program 1 times [2022-11-25 17:43:32,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:32,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927304900] [2022-11-25 17:43:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:32,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:32,836 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:43:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906852467] [2022-11-25 17:43:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:32,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:32,838 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:32,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 17:43:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:33,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 169 conjunts are in the unsatisfiable core [2022-11-25 17:43:33,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:33,701 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 [2022-11-25 17:43:34,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-25 17:43:34,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2022-11-25 17:43:34,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 22 [2022-11-25 17:43:34,463 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-25 17:43:34,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-25 17:43:36,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:36,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 17:43:40,729 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1963 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1963)) |c_#memory_int|)) is different from true [2022-11-25 17:43:43,119 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (v_ArrVal_1966 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_1966))) (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|))) is different from true [2022-11-25 17:43:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:44,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:43:44,438 INFO L321 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-11-25 17:43:44,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 39 [2022-11-25 17:43:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 45 trivial. 3 not checked. [2022-11-25 17:43:44,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:43:45,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:45,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927304900] [2022-11-25 17:43:45,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:43:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906852467] [2022-11-25 17:43:45,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906852467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:43:45,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:43:45,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-25 17:43:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737618198] [2022-11-25 17:43:45,756 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-25 17:43:45,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 17:43:45,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 17:43:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1008, Unknown=11, NotChecked=130, Total=1260 [2022-11-25 17:43:45,759 INFO L87 Difference]: Start difference. First operand 466 states and 616 transitions. Second operand has 35 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 14 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-25 17:44:03,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:44:13,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:44:15,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:44:17,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:44:20,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 17:44:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:34,428 INFO L93 Difference]: Finished difference Result 1470 states and 2058 transitions. [2022-11-25 17:44:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-25 17:44:34,428 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 14 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 193 [2022-11-25 17:44:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:34,437 INFO L225 Difference]: With dead ends: 1470 [2022-11-25 17:44:34,437 INFO L226 Difference]: Without dead ends: 1112 [2022-11-25 17:44:34,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=841, Invalid=7690, Unknown=33, NotChecked=366, Total=8930 [2022-11-25 17:44:34,442 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 883 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 6565 mSolverCounterSat, 477 mSolverCounterUnsat, 103 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 8449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 6565 IncrementalHoareTripleChecker+Invalid, 103 IncrementalHoareTripleChecker+Unknown, 1304 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:34,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 2768 Invalid, 8449 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [477 Valid, 6565 Invalid, 103 Unknown, 1304 Unchecked, 25.1s Time] [2022-11-25 17:44:34,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2022-11-25 17:44:34,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1031. [2022-11-25 17:44:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 752 states have (on average 1.190159574468085) internal successors, (895), 766 states have internal predecessors, (895), 177 states have call successors, (177), 84 states have call predecessors, (177), 101 states have return successors, (385), 183 states have call predecessors, (385), 174 states have call successors, (385) [2022-11-25 17:44:34,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1457 transitions. [2022-11-25 17:44:34,589 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1457 transitions. Word has length 193 [2022-11-25 17:44:34,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:34,590 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1457 transitions. [2022-11-25 17:44:34,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 3.75) internal successors, (120), 32 states have internal predecessors, (120), 14 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-25 17:44:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1457 transitions. [2022-11-25 17:44:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-25 17:44:34,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:34,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:34,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:34,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:34,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:34,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:34,811 INFO L85 PathProgramCache]: Analyzing trace with hash -16710381, now seen corresponding path program 1 times [2022-11-25 17:44:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:34,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170919985] [2022-11-25 17:44:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:34,898 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:34,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839469497] [2022-11-25 17:44:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:34,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:34,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:34,900 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:34,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 17:44:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:35,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 17:44:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:35,977 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-25 17:44:35,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 17:44:36,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:36,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170919985] [2022-11-25 17:44:36,325 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:36,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839469497] [2022-11-25 17:44:36,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839469497] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:36,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:36,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 17:44:36,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310647949] [2022-11-25 17:44:36,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:36,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:44:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:36,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:44:36,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:44:36,328 INFO L87 Difference]: Start difference. First operand 1031 states and 1457 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-25 17:44:36,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:36,651 INFO L93 Difference]: Finished difference Result 1870 states and 2740 transitions. [2022-11-25 17:44:36,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:44:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2022-11-25 17:44:36,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:36,661 INFO L225 Difference]: With dead ends: 1870 [2022-11-25 17:44:36,661 INFO L226 Difference]: Without dead ends: 1136 [2022-11-25 17:44:36,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:44:36,667 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 25 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:36,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 576 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:44:36,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-11-25 17:44:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1094. [2022-11-25 17:44:36,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 815 states have (on average 1.2012269938650306) internal successors, (979), 829 states have internal predecessors, (979), 177 states have call successors, (177), 84 states have call predecessors, (177), 101 states have return successors, (385), 183 states have call predecessors, (385), 174 states have call successors, (385) [2022-11-25 17:44:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1541 transitions. [2022-11-25 17:44:36,816 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1541 transitions. Word has length 193 [2022-11-25 17:44:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:36,817 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1541 transitions. [2022-11-25 17:44:36,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-25 17:44:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1541 transitions. [2022-11-25 17:44:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-25 17:44:36,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:36,824 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:36,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:37,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:37,039 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:37,040 INFO L85 PathProgramCache]: Analyzing trace with hash 49944159, now seen corresponding path program 1 times [2022-11-25 17:44:37,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:37,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839981571] [2022-11-25 17:44:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:37,129 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:37,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1640259900] [2022-11-25 17:44:37,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:37,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:37,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:37,131 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:37,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-25 17:44:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:37,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 17:44:37,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:38,003 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-25 17:44:38,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-25 17:44:38,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839981571] [2022-11-25 17:44:38,562 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640259900] [2022-11-25 17:44:38,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640259900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:38,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:38,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-25 17:44:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275730574] [2022-11-25 17:44:38,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:44:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:38,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:44:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:44:38,566 INFO L87 Difference]: Start difference. First operand 1094 states and 1541 transitions. Second operand has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-25 17:44:38,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:38,862 INFO L93 Difference]: Finished difference Result 1662 states and 2330 transitions. [2022-11-25 17:44:38,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:44:38,863 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) Word has length 232 [2022-11-25 17:44:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:38,870 INFO L225 Difference]: With dead ends: 1662 [2022-11-25 17:44:38,871 INFO L226 Difference]: Without dead ends: 1103 [2022-11-25 17:44:38,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:44:38,875 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 22 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:38,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1132 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 17:44:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-11-25 17:44:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1100. [2022-11-25 17:44:39,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 821 states have (on average 1.1997563946406822) internal successors, (985), 835 states have internal predecessors, (985), 177 states have call successors, (177), 84 states have call predecessors, (177), 101 states have return successors, (385), 183 states have call predecessors, (385), 174 states have call successors, (385) [2022-11-25 17:44:39,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1547 transitions. [2022-11-25 17:44:39,018 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1547 transitions. Word has length 232 [2022-11-25 17:44:39,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:39,018 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1547 transitions. [2022-11-25 17:44:39,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 11.0) internal successors, (121), 13 states have internal predecessors, (121), 6 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (31), 6 states have call predecessors, (31), 6 states have call successors, (31) [2022-11-25 17:44:39,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1547 transitions. [2022-11-25 17:44:39,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-25 17:44:39,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:39,026 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:39,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 17:44:39,240 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1914585249, now seen corresponding path program 1 times [2022-11-25 17:44:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:39,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563628735] [2022-11-25 17:44:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:39,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:39,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511696568] [2022-11-25 17:44:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:39,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:39,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:39,331 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-25 17:44:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:40,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:44:40,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:40,216 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-25 17:44:40,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:44:40,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:40,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563628735] [2022-11-25 17:44:40,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:40,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511696568] [2022-11-25 17:44:40,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511696568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:40,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:40,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:44:40,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101330284] [2022-11-25 17:44:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:40,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:44:40,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:44:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:44:40,220 INFO L87 Difference]: Start difference. First operand 1100 states and 1547 transitions. Second operand has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-25 17:44:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:40,760 INFO L93 Difference]: Finished difference Result 1721 states and 2401 transitions. [2022-11-25 17:44:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 17:44:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 207 [2022-11-25 17:44:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:40,768 INFO L225 Difference]: With dead ends: 1721 [2022-11-25 17:44:40,768 INFO L226 Difference]: Without dead ends: 1080 [2022-11-25 17:44:40,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:44:40,772 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 233 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:40,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1043 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:44:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2022-11-25 17:44:40,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1047. [2022-11-25 17:44:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 782 states have (on average 1.20076726342711) internal successors, (939), 801 states have internal predecessors, (939), 170 states have call successors, (170), 78 states have call predecessors, (170), 94 states have return successors, (315), 170 states have call predecessors, (315), 167 states have call successors, (315) [2022-11-25 17:44:40,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1424 transitions. [2022-11-25 17:44:40,908 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1424 transitions. Word has length 207 [2022-11-25 17:44:40,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:40,908 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1424 transitions. [2022-11-25 17:44:40,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.375) internal successors, (107), 9 states have internal predecessors, (107), 6 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2022-11-25 17:44:40,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1424 transitions. [2022-11-25 17:44:40,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-25 17:44:40,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:40,918 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:40,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:41,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 17:44:41,130 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1867857384, now seen corresponding path program 1 times [2022-11-25 17:44:41,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491095317] [2022-11-25 17:44:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:41,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:41,214 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:41,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102021202] [2022-11-25 17:44:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:41,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:41,217 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:41,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 17:44:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:42,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 17:44:42,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 73 proven. 23 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-25 17:44:42,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-25 17:44:42,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491095317] [2022-11-25 17:44:42,935 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:42,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102021202] [2022-11-25 17:44:42,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102021202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:42,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:42,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 20 [2022-11-25 17:44:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557191135] [2022-11-25 17:44:42,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:42,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:44:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:44:42,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:44:42,938 INFO L87 Difference]: Start difference. First operand 1047 states and 1424 transitions. Second operand has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-25 17:44:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:43,763 INFO L93 Difference]: Finished difference Result 1650 states and 2305 transitions. [2022-11-25 17:44:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 17:44:43,765 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) Word has length 219 [2022-11-25 17:44:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:43,772 INFO L225 Difference]: With dead ends: 1650 [2022-11-25 17:44:43,772 INFO L226 Difference]: Without dead ends: 1098 [2022-11-25 17:44:43,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 417 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2022-11-25 17:44:43,776 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 40 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:43,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 2708 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 17:44:43,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-11-25 17:44:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1053. [2022-11-25 17:44:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 788 states have (on average 1.1992385786802031) internal successors, (945), 807 states have internal predecessors, (945), 170 states have call successors, (170), 78 states have call predecessors, (170), 94 states have return successors, (315), 170 states have call predecessors, (315), 167 states have call successors, (315) [2022-11-25 17:44:43,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1430 transitions. [2022-11-25 17:44:43,915 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1430 transitions. Word has length 219 [2022-11-25 17:44:43,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:43,916 INFO L495 AbstractCegarLoop]: Abstraction has 1053 states and 1430 transitions. [2022-11-25 17:44:43,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.176470588235293) internal successors, (139), 20 states have internal predecessors, (139), 7 states have call successors, (31), 2 states have call predecessors, (31), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2022-11-25 17:44:43,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1430 transitions. [2022-11-25 17:44:43,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-25 17:44:43,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:43,923 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:43,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:44,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 17:44:44,135 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1831888028, now seen corresponding path program 2 times [2022-11-25 17:44:44,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:44,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651760690] [2022-11-25 17:44:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:44,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:44,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:44,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [541001147] [2022-11-25 17:44:44,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:44:44,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:44,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:44,232 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:44,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-25 17:44:45,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:44:45,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:44:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 17:44:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 73 proven. 30 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-25 17:44:45,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2022-11-25 17:44:45,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651760690] [2022-11-25 17:44:45,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:45,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541001147] [2022-11-25 17:44:45,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541001147] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:45,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:45,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-11-25 17:44:45,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010704854] [2022-11-25 17:44:45,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 17:44:45,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:45,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 17:44:45,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-25 17:44:45,898 INFO L87 Difference]: Start difference. First operand 1053 states and 1430 transitions. Second operand has 20 states, 18 states have (on average 7.666666666666667) internal successors, (138), 20 states have internal predecessors, (138), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 17:44:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:46,314 INFO L93 Difference]: Finished difference Result 1662 states and 2317 transitions. [2022-11-25 17:44:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:44:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 7.666666666666667) internal successors, (138), 20 states have internal predecessors, (138), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 221 [2022-11-25 17:44:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:46,322 INFO L225 Difference]: With dead ends: 1662 [2022-11-25 17:44:46,322 INFO L226 Difference]: Without dead ends: 1104 [2022-11-25 17:44:46,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 421 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:44:46,326 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 25 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:46,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2608 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:44:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-11-25 17:44:46,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1059. [2022-11-25 17:44:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 794 states have (on average 1.1977329974811084) internal successors, (951), 813 states have internal predecessors, (951), 170 states have call successors, (170), 78 states have call predecessors, (170), 94 states have return successors, (315), 170 states have call predecessors, (315), 167 states have call successors, (315) [2022-11-25 17:44:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1436 transitions. [2022-11-25 17:44:46,462 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1436 transitions. Word has length 221 [2022-11-25 17:44:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:46,462 INFO L495 AbstractCegarLoop]: Abstraction has 1059 states and 1436 transitions. [2022-11-25 17:44:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 7.666666666666667) internal successors, (138), 20 states have internal predecessors, (138), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 17:44:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1436 transitions. [2022-11-25 17:44:46,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-25 17:44:46,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:46,470 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:46,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:46,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 17:44:46,683 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:46,683 INFO L85 PathProgramCache]: Analyzing trace with hash -185930716, now seen corresponding path program 3 times [2022-11-25 17:44:46,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:46,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655320767] [2022-11-25 17:44:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:46,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:46,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92098841] [2022-11-25 17:44:46,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:44:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:46,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:46,768 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:46,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-25 17:44:48,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 17:44:48,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:44:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2420 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-25 17:44:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-25 17:44:48,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:44:48,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655320767] [2022-11-25 17:44:48,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:48,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92098841] [2022-11-25 17:44:48,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92098841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:44:48,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:44:48,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-25 17:44:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388683972] [2022-11-25 17:44:48,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:44:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:44:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:48,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:44:48,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:44:48,769 INFO L87 Difference]: Start difference. First operand 1059 states and 1436 transitions. Second operand has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 11 states have internal predecessors, (115), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-25 17:44:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:50,710 INFO L93 Difference]: Finished difference Result 1746 states and 2351 transitions. [2022-11-25 17:44:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 17:44:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 11 states have internal predecessors, (115), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) Word has length 223 [2022-11-25 17:44:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:50,720 INFO L225 Difference]: With dead ends: 1746 [2022-11-25 17:44:50,720 INFO L226 Difference]: Without dead ends: 1069 [2022-11-25 17:44:50,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:44:50,725 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 119 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:50,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1592 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 17:44:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-11-25 17:44:50,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1019. [2022-11-25 17:44:50,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 755 states have (on average 1.1947019867549669) internal successors, (902), 775 states have internal predecessors, (902), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:44:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1381 transitions. [2022-11-25 17:44:50,872 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1381 transitions. Word has length 223 [2022-11-25 17:44:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:50,873 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1381 transitions. [2022-11-25 17:44:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.846153846153847) internal successors, (115), 11 states have internal predecessors, (115), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (27), 6 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-25 17:44:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1381 transitions. [2022-11-25 17:44:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-25 17:44:50,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:50,880 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:50,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:51,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-25 17:44:51,093 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash 720148011, now seen corresponding path program 1 times [2022-11-25 17:44:51,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:51,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706366354] [2022-11-25 17:44:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:51,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:51,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215194628] [2022-11-25 17:44:51,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:51,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:51,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:51,178 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:51,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 17:44:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:53,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 17:44:53,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-25 17:44:53,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-25 17:44:54,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:54,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706366354] [2022-11-25 17:44:54,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:54,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215194628] [2022-11-25 17:44:54,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215194628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:54,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:54,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-11-25 17:44:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259526330] [2022-11-25 17:44:54,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-25 17:44:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-25 17:44:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:44:54,297 INFO L87 Difference]: Start difference. First operand 1019 states and 1381 transitions. Second operand has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 17:44:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:54,596 INFO L93 Difference]: Finished difference Result 1588 states and 2166 transitions. [2022-11-25 17:44:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:44:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 226 [2022-11-25 17:44:54,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:54,602 INFO L225 Difference]: With dead ends: 1588 [2022-11-25 17:44:54,602 INFO L226 Difference]: Without dead ends: 1028 [2022-11-25 17:44:54,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-25 17:44:54,606 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 26 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:54,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1876 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:44:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-25 17:44:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1025. [2022-11-25 17:44:54,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 761 states have (on average 1.1931668856767412) internal successors, (908), 781 states have internal predecessors, (908), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:44:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1387 transitions. [2022-11-25 17:44:54,727 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1387 transitions. Word has length 226 [2022-11-25 17:44:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:54,727 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1387 transitions. [2022-11-25 17:44:54,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.529411764705882) internal successors, (128), 19 states have internal predecessors, (128), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-25 17:44:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1387 transitions. [2022-11-25 17:44:54,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-25 17:44:54,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:54,734 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:54,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 17:44:54,948 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1673071491, now seen corresponding path program 1 times [2022-11-25 17:44:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:54,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202653108] [2022-11-25 17:44:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:55,015 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:55,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477353791] [2022-11-25 17:44:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:55,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:55,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:55,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-25 17:44:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:55,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-25 17:44:55,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:55,899 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 133 proven. 22 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-25 17:44:55,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:44:56,531 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 11 proven. 93 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-25 17:44:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:44:56,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202653108] [2022-11-25 17:44:56,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:44:56,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477353791] [2022-11-25 17:44:56,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477353791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:44:56,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:44:56,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 17:44:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813400564] [2022-11-25 17:44:56,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:44:56,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 17:44:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:44:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 17:44:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:44:56,536 INFO L87 Difference]: Start difference. First operand 1025 states and 1387 transitions. Second operand has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 17:44:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:57,884 INFO L93 Difference]: Finished difference Result 2050 states and 2994 transitions. [2022-11-25 17:44:57,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:44:57,885 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 218 [2022-11-25 17:44:57,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:57,894 INFO L225 Difference]: With dead ends: 2050 [2022-11-25 17:44:57,894 INFO L226 Difference]: Without dead ends: 1277 [2022-11-25 17:44:57,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-11-25 17:44:57,900 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 83 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:57,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 1197 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 17:44:57,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2022-11-25 17:44:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1151. [2022-11-25 17:44:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 887 states have (on average 1.2130777903043968) internal successors, (1076), 907 states have internal predecessors, (1076), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:44:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1555 transitions. [2022-11-25 17:44:58,069 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1555 transitions. Word has length 218 [2022-11-25 17:44:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:58,069 INFO L495 AbstractCegarLoop]: Abstraction has 1151 states and 1555 transitions. [2022-11-25 17:44:58,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.928571428571429) internal successors, (139), 14 states have internal predecessors, (139), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-25 17:44:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1555 transitions. [2022-11-25 17:44:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-11-25 17:44:58,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:58,078 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 10, 10, 10, 8, 8, 8, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:44:58,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-25 17:44:58,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:58,288 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:58,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -148268769, now seen corresponding path program 1 times [2022-11-25 17:44:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:58,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154023475] [2022-11-25 17:44:58,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:58,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:44:58,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165063137] [2022-11-25 17:44:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:58,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:44:58,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:44:58,381 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:44:58,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-25 17:44:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:44:59,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3318 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 17:44:59,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:44:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 197 proven. 25 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-25 17:44:59,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:00,127 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-25 17:45:00,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154023475] [2022-11-25 17:45:00,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165063137] [2022-11-25 17:45:00,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165063137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:00,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:00,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-11-25 17:45:00,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483962965] [2022-11-25 17:45:00,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:00,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 17:45:00,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:00,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 17:45:00,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-25 17:45:00,131 INFO L87 Difference]: Start difference. First operand 1151 states and 1555 transitions. Second operand has 21 states, 19 states have (on average 8.789473684210526) internal successors, (167), 21 states have internal predecessors, (167), 6 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:00,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:00,514 INFO L93 Difference]: Finished difference Result 1780 states and 2418 transitions. [2022-11-25 17:45:00,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 17:45:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 8.789473684210526) internal successors, (167), 21 states have internal predecessors, (167), 6 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 312 [2022-11-25 17:45:00,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:00,523 INFO L225 Difference]: With dead ends: 1780 [2022-11-25 17:45:00,523 INFO L226 Difference]: Without dead ends: 1160 [2022-11-25 17:45:00,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-11-25 17:45:00,528 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 20 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:00,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2067 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 17:45:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2022-11-25 17:45:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1157. [2022-11-25 17:45:00,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 893 states have (on average 1.211646136618141) internal successors, (1082), 913 states have internal predecessors, (1082), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:45:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1561 transitions. [2022-11-25 17:45:00,722 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1561 transitions. Word has length 312 [2022-11-25 17:45:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:00,723 INFO L495 AbstractCegarLoop]: Abstraction has 1157 states and 1561 transitions. [2022-11-25 17:45:00,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 8.789473684210526) internal successors, (167), 21 states have internal predecessors, (167), 6 states have call successors, (41), 2 states have call predecessors, (41), 5 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:00,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1561 transitions. [2022-11-25 17:45:00,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-11-25 17:45:00,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:00,730 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 10, 10, 8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:00,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:00,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-25 17:45:00,943 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:00,944 INFO L85 PathProgramCache]: Analyzing trace with hash -949690780, now seen corresponding path program 1 times [2022-11-25 17:45:00,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:00,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731553067] [2022-11-25 17:45:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:00,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:01,042 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:01,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042703787] [2022-11-25 17:45:01,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:01,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:01,044 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:01,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-25 17:45:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:02,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 3320 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-25 17:45:02,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 187 proven. 36 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-25 17:45:02,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:03,065 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2022-11-25 17:45:03,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731553067] [2022-11-25 17:45:03,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042703787] [2022-11-25 17:45:03,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042703787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:03,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:03,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-11-25 17:45:03,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621828382] [2022-11-25 17:45:03,067 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:03,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-25 17:45:03,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-25 17:45:03,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:45:03,069 INFO L87 Difference]: Start difference. First operand 1157 states and 1561 transitions. Second operand has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-11-25 17:45:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:03,539 INFO L93 Difference]: Finished difference Result 1792 states and 2430 transitions. [2022-11-25 17:45:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:45:03,540 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 299 [2022-11-25 17:45:03,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:03,548 INFO L225 Difference]: With dead ends: 1792 [2022-11-25 17:45:03,548 INFO L226 Difference]: Without dead ends: 1166 [2022-11-25 17:45:03,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-11-25 17:45:03,552 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 14 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:03,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3555 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 17:45:03,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2022-11-25 17:45:03,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1163. [2022-11-25 17:45:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 899 states have (on average 1.2102335928809789) internal successors, (1088), 919 states have internal predecessors, (1088), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:45:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1567 transitions. [2022-11-25 17:45:03,695 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1567 transitions. Word has length 299 [2022-11-25 17:45:03,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:03,696 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1567 transitions. [2022-11-25 17:45:03,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 8.047619047619047) internal successors, (169), 23 states have internal predecessors, (169), 6 states have call successors, (39), 2 states have call predecessors, (39), 5 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2022-11-25 17:45:03,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1567 transitions. [2022-11-25 17:45:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2022-11-25 17:45:03,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:03,705 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 20, 14, 14, 8, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:03,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:03,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-25 17:45:03,916 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:03,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash 870638336, now seen corresponding path program 1 times [2022-11-25 17:45:03,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22823806] [2022-11-25 17:45:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:03,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:04,022 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:04,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724576527] [2022-11-25 17:45:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:04,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:04,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:04,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:04,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-25 17:45:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 3285 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-25 17:45:05,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 611 proven. 185 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-25 17:45:05,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 973 trivial. 0 not checked. [2022-11-25 17:45:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:06,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22823806] [2022-11-25 17:45:06,666 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:06,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724576527] [2022-11-25 17:45:06,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724576527] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:06,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:06,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 34 [2022-11-25 17:45:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958920096] [2022-11-25 17:45:06,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:06,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-25 17:45:06,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:06,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-25 17:45:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 17:45:06,669 INFO L87 Difference]: Start difference. First operand 1163 states and 1567 transitions. Second operand has 34 states, 32 states have (on average 6.28125) internal successors, (201), 34 states have internal predecessors, (201), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:09,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:09,141 INFO L93 Difference]: Finished difference Result 1916 states and 2714 transitions. [2022-11-25 17:45:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 17:45:09,142 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 6.28125) internal successors, (201), 34 states have internal predecessors, (201), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 323 [2022-11-25 17:45:09,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:09,150 INFO L225 Difference]: With dead ends: 1916 [2022-11-25 17:45:09,151 INFO L226 Difference]: Without dead ends: 1284 [2022-11-25 17:45:09,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 611 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-11-25 17:45:09,155 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 51 mSDsluCounter, 4919 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5123 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:09,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 5123 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 17:45:09,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2022-11-25 17:45:09,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1169. [2022-11-25 17:45:09,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1169 states, 905 states have (on average 1.208839779005525) internal successors, (1094), 925 states have internal predecessors, (1094), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:45:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1573 transitions. [2022-11-25 17:45:09,363 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1573 transitions. Word has length 323 [2022-11-25 17:45:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:09,364 INFO L495 AbstractCegarLoop]: Abstraction has 1169 states and 1573 transitions. [2022-11-25 17:45:09,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 6.28125) internal successors, (201), 34 states have internal predecessors, (201), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:09,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1573 transitions. [2022-11-25 17:45:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-25 17:45:09,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:09,372 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 20, 16, 16, 8, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:09,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:09,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:09,587 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:09,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:09,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1600294259, now seen corresponding path program 1 times [2022-11-25 17:45:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:09,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014616670] [2022-11-25 17:45:09,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:09,687 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:09,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1089995179] [2022-11-25 17:45:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:09,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:09,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:09,689 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:09,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-25 17:45:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:10,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 3316 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-25 17:45:10,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 643 proven. 206 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2022-11-25 17:45:11,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 988 trivial. 0 not checked. [2022-11-25 17:45:12,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:12,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014616670] [2022-11-25 17:45:12,685 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:12,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089995179] [2022-11-25 17:45:12,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089995179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:12,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:12,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 37 [2022-11-25 17:45:12,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102807059] [2022-11-25 17:45:12,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:12,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-25 17:45:12,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-25 17:45:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:45:12,689 INFO L87 Difference]: Start difference. First operand 1169 states and 1573 transitions. Second operand has 37 states, 35 states have (on average 5.828571428571428) internal successors, (204), 37 states have internal predecessors, (204), 6 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2022-11-25 17:45:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:15,626 INFO L93 Difference]: Finished difference Result 1942 states and 2760 transitions. [2022-11-25 17:45:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 17:45:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 5.828571428571428) internal successors, (204), 37 states have internal predecessors, (204), 6 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) Word has length 321 [2022-11-25 17:45:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:15,636 INFO L225 Difference]: With dead ends: 1942 [2022-11-25 17:45:15,637 INFO L226 Difference]: Without dead ends: 1304 [2022-11-25 17:45:15,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 604 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=221, Invalid=2131, Unknown=0, NotChecked=0, Total=2352 [2022-11-25 17:45:15,640 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 49 mSDsluCounter, 5189 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 5396 SdHoareTripleChecker+Invalid, 2356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:15,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 5396 Invalid, 2356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 17:45:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-11-25 17:45:15,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1175. [2022-11-25 17:45:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 911 states have (on average 1.2074643249176729) internal successors, (1100), 931 states have internal predecessors, (1100), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:45:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1579 transitions. [2022-11-25 17:45:15,810 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1579 transitions. Word has length 321 [2022-11-25 17:45:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:15,811 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 1579 transitions. [2022-11-25 17:45:15,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 5.828571428571428) internal successors, (204), 37 states have internal predecessors, (204), 6 states have call successors, (39), 2 states have call predecessors, (39), 6 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2022-11-25 17:45:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1579 transitions. [2022-11-25 17:45:15,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-11-25 17:45:15,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:15,819 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 20, 18, 18, 8, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:15,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:16,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:16,040 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:16,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:16,041 INFO L85 PathProgramCache]: Analyzing trace with hash 940477704, now seen corresponding path program 2 times [2022-11-25 17:45:16,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:16,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572200046] [2022-11-25 17:45:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:16,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:16,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507028779] [2022-11-25 17:45:16,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:45:16,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:16,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:16,153 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:16,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 17:45:17,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:45:17,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:17,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 3361 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-25 17:45:17,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 679 proven. 226 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-25 17:45:18,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:20,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2022-11-25 17:45:20,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:20,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572200046] [2022-11-25 17:45:20,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:20,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507028779] [2022-11-25 17:45:20,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507028779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:20,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:20,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16] total 40 [2022-11-25 17:45:20,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116405749] [2022-11-25 17:45:20,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-25 17:45:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-25 17:45:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:45:20,100 INFO L87 Difference]: Start difference. First operand 1175 states and 1579 transitions. Second operand has 40 states, 38 states have (on average 5.631578947368421) internal successors, (214), 40 states have internal predecessors, (214), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:23,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:23,021 INFO L93 Difference]: Finished difference Result 1982 states and 2827 transitions. [2022-11-25 17:45:23,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 17:45:23,022 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 5.631578947368421) internal successors, (214), 40 states have internal predecessors, (214), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 331 [2022-11-25 17:45:23,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:23,027 INFO L225 Difference]: With dead ends: 1982 [2022-11-25 17:45:23,027 INFO L226 Difference]: Without dead ends: 1338 [2022-11-25 17:45:23,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 621 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=246, Invalid=2510, Unknown=0, NotChecked=0, Total=2756 [2022-11-25 17:45:23,030 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 66 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 5269 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:23,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 5269 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:45:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2022-11-25 17:45:23,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1181. [2022-11-25 17:45:23,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 917 states have (on average 1.2061068702290076) internal successors, (1106), 937 states have internal predecessors, (1106), 170 states have call successors, (170), 78 states have call predecessors, (170), 93 states have return successors, (309), 168 states have call predecessors, (309), 167 states have call successors, (309) [2022-11-25 17:45:23,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1585 transitions. [2022-11-25 17:45:23,191 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1585 transitions. Word has length 331 [2022-11-25 17:45:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:23,192 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1585 transitions. [2022-11-25 17:45:23,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 5.631578947368421) internal successors, (214), 40 states have internal predecessors, (214), 6 states have call successors, (40), 2 states have call predecessors, (40), 6 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-11-25 17:45:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1585 transitions. [2022-11-25 17:45:23,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-25 17:45:23,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:23,199 INFO L195 NwaCegarLoop]: trace histogram [23, 20, 20, 20, 20, 8, 8, 8, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:23,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:23,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:23,417 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:23,418 INFO L85 PathProgramCache]: Analyzing trace with hash 695330572, now seen corresponding path program 3 times [2022-11-25 17:45:23,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:23,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154470567] [2022-11-25 17:45:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:23,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:23,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:23,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480367657] [2022-11-25 17:45:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:45:23,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:23,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:23,518 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:23,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-25 17:45:25,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-25 17:45:25,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:45:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2310 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-25 17:45:25,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:26,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 445 proven. 282 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2022-11-25 17:45:26,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:45:27,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 17:45:27,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 69 [2022-11-25 17:45:28,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1358 backedges. 406 proven. 50 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2022-11-25 17:45:28,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:45:28,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154470567] [2022-11-25 17:45:28,301 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 17:45:28,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480367657] [2022-11-25 17:45:28,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480367657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:45:28,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 17:45:28,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12] total 27 [2022-11-25 17:45:28,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543051383] [2022-11-25 17:45:28,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 17:45:28,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 17:45:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:45:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 17:45:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-11-25 17:45:28,304 INFO L87 Difference]: Start difference. First operand 1181 states and 1585 transitions. Second operand has 27 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 25 states have internal predecessors, (153), 11 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-25 17:45:31,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:45:31,264 INFO L93 Difference]: Finished difference Result 1490 states and 2085 transitions. [2022-11-25 17:45:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-25 17:45:31,265 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 25 states have internal predecessors, (153), 11 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) Word has length 335 [2022-11-25 17:45:31,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:45:31,274 INFO L225 Difference]: With dead ends: 1490 [2022-11-25 17:45:31,274 INFO L226 Difference]: Without dead ends: 1332 [2022-11-25 17:45:31,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 642 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2022-11-25 17:45:31,277 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 178 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:45:31,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 2250 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 17:45:31,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2022-11-25 17:45:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1306. [2022-11-25 17:45:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 995 states have (on average 1.2100502512562814) internal successors, (1204), 1022 states have internal predecessors, (1204), 206 states have call successors, (206), 78 states have call predecessors, (206), 104 states have return successors, (425), 208 states have call predecessors, (425), 203 states have call successors, (425) [2022-11-25 17:45:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1835 transitions. [2022-11-25 17:45:31,477 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1835 transitions. Word has length 335 [2022-11-25 17:45:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:45:31,478 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1835 transitions. [2022-11-25 17:45:31,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 25 states have internal predecessors, (153), 11 states have call successors, (40), 4 states have call predecessors, (40), 8 states have return successors, (40), 8 states have call predecessors, (40), 11 states have call successors, (40) [2022-11-25 17:45:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1835 transitions. [2022-11-25 17:45:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-11-25 17:45:31,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:45:31,487 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:45:31,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-25 17:45:31,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-25 17:45:31,699 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:45:31,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:45:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash -938366839, now seen corresponding path program 1 times [2022-11-25 17:45:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:45:31,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837246594] [2022-11-25 17:45:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:45:31,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 17:45:31,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216124778] [2022-11-25 17:45:31,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:45:31,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:45:31,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:45:31,790 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:45:31,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b49e0adc-b4a4-4b02-bea6-4b1501062ab0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-25 17:45:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:45:36,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 3587 conjuncts, 470 conjunts are in the unsatisfiable core [2022-11-25 17:45:36,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:45:36,360 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 [2022-11-25 17:45:36,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 17:45:36,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-25 17:45:36,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 54 treesize of output 35 [2022-11-25 17:45:37,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-11-25 17:45:37,113 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-25 17:45:37,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 29 treesize of output 33 [2022-11-25 17:45:37,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:45:37,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:45:37,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2022-11-25 17:45:37,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 17:45:37,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 17:45:37,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-25 17:45:37,788 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5949 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5949) |c_#memory_$Pointer$.base|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_521| Int)) (and (< |c_#StackHeapBarrier| |v___CPROVER_overflow_mult_~#c~1.base_521|) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_521|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_521| 0)))) (exists ((v_ArrVal_5950 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5950)))) is different from true [2022-11-25 17:45:38,371 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 17:45:38,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-25 17:45:38,791 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5954 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5954) |c_#memory_$Pointer$.base|)) (exists ((|v___CPROVER_overflow_mult_~#c~1.base_522| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_522|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_522| 0)))) (exists ((v_ArrVal_5955 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5955)))) is different from true [2022-11-25 17:45:41,085 INFO L321 Elim1Store]: treesize reduction 218, result has 17.7 percent of original size [2022-11-25 17:45:41,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 759 treesize of output 771 [2022-11-25 17:45:41,202 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:45:41,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2022-11-25 17:45:41,321 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 17:45:41,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 52 [2022-11-25 17:45:43,273 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5961 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5961) |c_#memory_int|)) (exists ((v_ArrVal_5959 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5959) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5960 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_5960) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5958 Int) (|v___CPROVER_overflow_mult_~#c~1.base_523| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_523|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_523| v_ArrVal_5958))))) is different from true [2022-11-25 17:45:44,112 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-25 17:45:44,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:45:44,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-25 17:45:44,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-25 17:45:44,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 [2022-11-25 17:45:44,319 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-25 17:45:44,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 17:46:42,901 WARN L837 $PredicateComparison]: unable to prove that (and (< 5 (mod |c_memset_impl_#in~n| 18446744073709551616)) (let ((.cse13 (select |c_old(#memory_$Pointer$.base)| |c_memset_impl_#in~s.base|)) (.cse2 (select |c_old(#memory_$Pointer$.offset)| |c_memset_impl_#in~s.base|)) (.cse12 (select |c_old(#memory_int)| |c_memset_impl_#in~s.base|)) (.cse3 (+ |c_memset_impl_#in~s.offset| 1)) (.cse4 (+ |c_memset_impl_#in~s.offset| 2)) (.cse5 (+ |c_memset_impl_#in~s.offset| 3)) (.cse6 (+ |c_memset_impl_#in~s.offset| 4)) (.cse7 (+ |c_memset_impl_#in~s.offset| 5)) (.cse8 (+ |c_memset_impl_#in~s.offset| 6)) (.cse9 (+ |c_memset_impl_#in~s.offset| 7))) (or (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (v_ArrVal_6018 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse14 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse0 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse1 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse10 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_memset_impl_#in~s.offset|)) (.cse11 (+ |c_memset_impl_#in~s.offset| (mod aux_mod_memset_impl_~i~6_43 18446744073709551616)))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse0) (<= .cse0 9223372036854775807) (<= 0 .cse1) (= (store |c_old(#memory_$Pointer$.offset)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_memset_impl_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse10 v_ArrVal_6015) .cse11 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_memset_impl_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse10 v_ArrVal_6011) .cse11 v_ArrVal_6018))) (<= .cse1 9223372036854775807) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_memset_impl_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse10 v_ArrVal_6013) .cse11 v_ArrVal_6019))) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807))))) (<= 0 aux_mod_memset_impl_~i~6_43))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse19 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse15 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse19)) (.cse16 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse19)) (.cse17 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_memset_impl_#in~s.offset| (- 18446744073709551616))) (.cse18 (+ |c_memset_impl_#in~s.offset| (mod aux_mod_memset_impl_~i~6_43 18446744073709551616)))) (and (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (< .cse15 18446744073709551616) (< 9223372036854775807 .cse15) (< .cse16 18446744073709551616) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_memset_impl_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse17 v_ArrVal_6015) .cse18 v_ArrVal_6017))) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_memset_impl_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse17 v_ArrVal_6011) .cse18 v_ArrVal_6018)) |c_#memory_int|) (< 9223372036854775807 .cse16) (= (store |c_old(#memory_$Pointer$.base)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_memset_impl_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse17 v_ArrVal_6013) .cse18 v_ArrVal_6019)) |c_#memory_$Pointer$.base|) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))))) (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (<= 0 aux_mod_memset_impl_~i~6_43))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse24 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse20 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_memset_impl_#in~s.offset| (- 18446744073709551616))) (.cse21 (+ |c_memset_impl_#in~s.offset| (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616))) (.cse22 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24)) (.cse23 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24))) (and (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_memset_impl_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse20 v_ArrVal_6011) .cse21 v_ArrVal_6018)) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_memset_impl_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse20 v_ArrVal_6013) .cse21 v_ArrVal_6019))) (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (= (store |c_old(#memory_$Pointer$.offset)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_memset_impl_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse20 v_ArrVal_6015) .cse21 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (< .cse22 18446744073709551616) (< 9223372036854775807 .cse22) (< .cse23 18446744073709551616) (< 9223372036854775807 .cse23) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))))) (< aux_mod_memset_impl_~i~6_43 18446744073709551616))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse29 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse25 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse29)) (.cse26 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse29)) (.cse27 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_memset_impl_#in~s.offset|)) (.cse28 (+ |c_memset_impl_#in~s.offset| (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616)))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse25) (<= .cse25 9223372036854775807) (<= 0 .cse26) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_memset_impl_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse27 v_ArrVal_6013) .cse28 v_ArrVal_6019))) (<= .cse26 9223372036854775807) (= (store |c_old(#memory_$Pointer$.offset)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_memset_impl_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse27 v_ArrVal_6015) .cse28 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_memset_impl_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse27 v_ArrVal_6011) .cse28 v_ArrVal_6018)) |c_#memory_int|) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807))))) (< aux_mod_memset_impl_~i~6_43 18446744073709551616)))))) is different from false [2022-11-25 17:46:59,898 WARN L837 $PredicateComparison]: unable to prove that (and (< 5 (mod |c_my_memset_#in~n| 18446744073709551616)) (let ((.cse13 (select |c_old(#memory_$Pointer$.base)| |c_my_memset_#in~s.base|)) (.cse2 (select |c_old(#memory_$Pointer$.offset)| |c_my_memset_#in~s.base|)) (.cse12 (select |c_old(#memory_int)| |c_my_memset_#in~s.base|)) (.cse3 (+ |c_my_memset_#in~s.offset| 1)) (.cse4 (+ 2 |c_my_memset_#in~s.offset|)) (.cse5 (+ 3 |c_my_memset_#in~s.offset|)) (.cse6 (+ |c_my_memset_#in~s.offset| 4)) (.cse7 (+ 5 |c_my_memset_#in~s.offset|)) (.cse8 (+ 6 |c_my_memset_#in~s.offset|)) (.cse9 (+ 7 |c_my_memset_#in~s.offset|))) (or (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (<= 0 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (v_ArrVal_6018 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse14 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse0 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse1 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse10 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_my_memset_#in~s.offset|)) (.cse11 (+ (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_my_memset_#in~s.offset|))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse0) (<= .cse0 9223372036854775807) (<= 0 .cse1) (= (store |c_old(#memory_$Pointer$.offset)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_my_memset_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse10 v_ArrVal_6015) .cse11 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_my_memset_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse10 v_ArrVal_6011) .cse11 v_ArrVal_6018)) |c_#memory_int|) (<= .cse1 9223372036854775807) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807) (= (store |c_old(#memory_$Pointer$.base)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_my_memset_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse10 v_ArrVal_6013) .cse11 v_ArrVal_6019)) |c_#memory_$Pointer$.base|))))))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse19 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse15 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse19)) (.cse18 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse19)) (.cse16 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (- 18446744073709551616) |c_my_memset_#in~s.offset|)) (.cse17 (+ (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_my_memset_#in~s.offset|))) (and (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (< .cse15 18446744073709551616) (= (store |c_old(#memory_$Pointer$.offset)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_my_memset_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse16 v_ArrVal_6015) .cse17 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (< 9223372036854775807 .cse15) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_my_memset_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse16 v_ArrVal_6011) .cse17 v_ArrVal_6018)) |c_#memory_int|) (< .cse18 18446744073709551616) (< 9223372036854775807 .cse18) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_my_memset_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse16 v_ArrVal_6013) .cse17 v_ArrVal_6019))) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))))) (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (<= 0 aux_mod_memset_impl_~i~6_43))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse24 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse22 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24)) (.cse20 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (- 18446744073709551616) |c_my_memset_#in~s.offset|)) (.cse21 (+ (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_my_memset_#in~s.offset|)) (.cse23 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24))) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_my_memset_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse20 v_ArrVal_6015) .cse21 v_ArrVal_6017))) (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (< .cse22 18446744073709551616) (= (store |c_old(#memory_int)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_my_memset_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse20 v_ArrVal_6011) .cse21 v_ArrVal_6018)) |c_#memory_int|) (< 9223372036854775807 .cse22) (< .cse23 18446744073709551616) (= (store |c_old(#memory_$Pointer$.base)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_my_memset_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse20 v_ArrVal_6013) .cse21 v_ArrVal_6019)) |c_#memory_$Pointer$.base|) (< 9223372036854775807 .cse23) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))))) (< aux_mod_memset_impl_~i~6_43 18446744073709551616))) (exists ((aux_mod_memset_impl_~i~6_43 Int)) (and (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse29 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse25 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse29)) (.cse28 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse29)) (.cse26 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_my_memset_#in~s.offset|)) (.cse27 (+ (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_my_memset_#in~s.offset|))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse25) (<= .cse25 9223372036854775807) (= (store |c_old(#memory_$Pointer$.base)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse13 |c_my_memset_#in~s.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse26 v_ArrVal_6013) .cse27 v_ArrVal_6019)) |c_#memory_$Pointer$.base|) (<= 0 .cse28) (= (store |c_old(#memory_$Pointer$.offset)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse2 |c_my_memset_#in~s.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse26 v_ArrVal_6015) .cse27 v_ArrVal_6017)) |c_#memory_$Pointer$.offset|) (<= .cse28 9223372036854775807) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memset_#in~s.base| (store (store (store (store (store (store (store (store (store (store .cse12 |c_my_memset_#in~s.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse26 v_ArrVal_6011) .cse27 v_ArrVal_6018))) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807))))) (< aux_mod_memset_impl_~i~6_43 18446744073709551616)))))) is different from false [2022-11-25 17:47:21,144 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_aws_array_list_clean_up_#in~list.offset| 1)) (.cse4 (+ 2 |c_aws_array_list_clean_up_#in~list.offset|)) (.cse5 (+ 3 |c_aws_array_list_clean_up_#in~list.offset|)) (.cse6 (+ 4 |c_aws_array_list_clean_up_#in~list.offset|)) (.cse7 (+ 5 |c_aws_array_list_clean_up_#in~list.offset|)) (.cse8 (+ 6 |c_aws_array_list_clean_up_#in~list.offset|)) (.cse9 (+ 7 |c_aws_array_list_clean_up_#in~list.offset|))) (or (exists ((v_ArrVal_5958 Int) (v_ArrVal_5957 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_221| Int) (v_ArrVal_5962 Int) (|v___CPROVER_overflow_mult_~#c~1.base_523| Int)) (let ((.cse15 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5957))) (and (exists ((v_ArrVal_5961 (Array Int Int)) (v_ArrVal_5960 (Array Int Int)) (aux_mod_memset_impl_~i~6_43 Int) (v_ArrVal_5959 (Array Int Int))) (and (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse14 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse0 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse1 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse14)) (.cse10 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|)) (.cse11 (+ (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse0) (<= .cse0 9223372036854775807) (<= 0 .cse1) (= |c_#memory_$Pointer$.base| (let ((.cse2 (store |c_old(#memory_$Pointer$.base)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5960))) (store .cse2 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse2 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse10 v_ArrVal_6013) .cse11 v_ArrVal_6019)))) (<= .cse1 9223372036854775807) (= (let ((.cse12 (store |c_old(#memory_int)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5961))) (store .cse12 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse12 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse10 v_ArrVal_6011) .cse11 v_ArrVal_6018))) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (let ((.cse13 (store |c_old(#memory_$Pointer$.offset)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5959))) (store .cse13 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse13 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse10 v_ArrVal_6015) .cse11 v_ArrVal_6017)))) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807))))) (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (< aux_mod_memset_impl_~i~6_43 18446744073709551616))) (= (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221|) 0) (= (select .cse15 |v___CPROVER_overflow_mult_~#c~1.base_523|) 0) (= |c_#valid| (store (store .cse15 |v___CPROVER_overflow_mult_~#c~1.base_523| v_ArrVal_5958) |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5962))))) (exists ((v_ArrVal_5958 Int) (v_ArrVal_5957 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_221| Int) (v_ArrVal_5962 Int) (|v___CPROVER_overflow_mult_~#c~1.base_523| Int)) (let ((.cse16 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5957))) (and (= (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221|) 0) (= (select .cse16 |v___CPROVER_overflow_mult_~#c~1.base_523|) 0) (= |c_#valid| (store (store .cse16 |v___CPROVER_overflow_mult_~#c~1.base_523| v_ArrVal_5958) |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5962)) (exists ((v_ArrVal_5961 (Array Int Int)) (v_ArrVal_5960 (Array Int Int)) (aux_mod_memset_impl_~i~6_43 Int) (v_ArrVal_5959 (Array Int Int))) (and (exists ((v_ArrVal_5968 Int) (v_ArrVal_5967 Int) (v_ArrVal_5989 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (v_ArrVal_6018 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_5984 Int) (v_ArrVal_6017 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_6006 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse24 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse17 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24)) (.cse18 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse24)) (.cse20 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|)) (.cse21 (+ (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|))) (and (<= 0 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65) (<= 0 .cse17) (<= .cse17 9223372036854775807) (<= 0 .cse18) (= |c_#memory_$Pointer$.base| (let ((.cse19 (store |c_old(#memory_$Pointer$.base)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5960))) (store .cse19 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse19 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse20 v_ArrVal_6013) .cse21 v_ArrVal_6019)))) (<= .cse18 9223372036854775807) (= |c_#memory_int| (let ((.cse22 (store |c_old(#memory_int)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5961))) (store .cse22 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse22 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse20 v_ArrVal_6011) .cse21 v_ArrVal_6018)))) (<= aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 9223372036854775807) (= |c_#memory_$Pointer$.offset| (let ((.cse23 (store |c_old(#memory_$Pointer$.offset)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5959))) (store .cse23 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse23 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse20 v_ArrVal_6015) .cse21 v_ArrVal_6017)))))))) (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (<= 0 aux_mod_memset_impl_~i~6_43)))))) (exists ((v_ArrVal_5958 Int) (v_ArrVal_5957 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_221| Int) (v_ArrVal_5962 Int) (|v___CPROVER_overflow_mult_~#c~1.base_523| Int)) (let ((.cse25 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5957))) (and (= (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221|) 0) (= (select .cse25 |v___CPROVER_overflow_mult_~#c~1.base_523|) 0) (= |c_#valid| (store (store .cse25 |v___CPROVER_overflow_mult_~#c~1.base_523| v_ArrVal_5958) |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5962)) (exists ((v_ArrVal_5961 (Array Int Int)) (v_ArrVal_5960 (Array Int Int)) (aux_mod_memset_impl_~i~6_43 Int) (v_ArrVal_5959 (Array Int Int))) (and (<= aux_mod_memset_impl_~i~6_43 9223372036854775807) (<= 0 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_6013 Int) (v_ArrVal_5980 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5977 Int) (v_ArrVal_5999 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6007 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse33 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse29 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse33)) (.cse30 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse33)) (.cse27 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (- 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|)) (.cse28 (+ (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|))) (and (= (let ((.cse26 (store |c_old(#memory_$Pointer$.base)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5960))) (store .cse26 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse26 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse27 v_ArrVal_6013) .cse28 v_ArrVal_6019))) |c_#memory_$Pointer$.base|) (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (< .cse29 18446744073709551616) (< 9223372036854775807 .cse29) (< .cse30 18446744073709551616) (= (let ((.cse31 (store |c_old(#memory_int)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5961))) (store .cse31 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse31 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse27 v_ArrVal_6011) .cse28 v_ArrVal_6018))) |c_#memory_int|) (< 9223372036854775807 .cse30) (= |c_#memory_$Pointer$.offset| (let ((.cse32 (store |c_old(#memory_$Pointer$.offset)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5959))) (store .cse32 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse32 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse27 v_ArrVal_6015) .cse28 v_ArrVal_6017)))) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65)))))))))) (exists ((v_ArrVal_5958 Int) (v_ArrVal_5957 Int) (|v_aws_array_list_is_valid_~#required_size~0.base_221| Int) (v_ArrVal_5962 Int) (|v___CPROVER_overflow_mult_~#c~1.base_523| Int)) (let ((.cse42 (store |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5957))) (and (exists ((v_ArrVal_5961 (Array Int Int)) (v_ArrVal_5960 (Array Int Int)) (aux_mod_memset_impl_~i~6_43 Int) (v_ArrVal_5959 (Array Int Int))) (and (< 9223372036854775807 aux_mod_memset_impl_~i~6_43) (exists ((v_ArrVal_5968 Int) (v_ArrVal_5989 Int) (v_ArrVal_5967 Int) (v_ArrVal_5965 Int) (v_ArrVal_5986 Int) (v_ArrVal_6019 Int) (aux_div_aux_mod_memset_impl_~i~6_43_54 Int) (v_ArrVal_6018 Int) (v_ArrVal_6017 Int) (v_ArrVal_5984 Int) (v_ArrVal_6015 Int) (v_ArrVal_5981 Int) (v_ArrVal_5980 Int) (v_ArrVal_6013 Int) (v_ArrVal_6011 Int) (v_ArrVal_6010 Int) (aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 Int) (v_ArrVal_5979 Int) (v_ArrVal_5999 Int) (v_ArrVal_5977 Int) (v_ArrVal_6007 Int) (v_ArrVal_5974 Int) (v_ArrVal_5996 Int) (v_ArrVal_6006 Int) (v_ArrVal_5973 Int) (v_ArrVal_5995 Int) (v_ArrVal_5972 Int) (v_ArrVal_5993 Int) (v_ArrVal_5992 Int) (v_ArrVal_5991 Int) (v_ArrVal_6001 Int) (v_ArrVal_6000 Int)) (let ((.cse41 (* 18446744073709551616 aux_div_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))) (let ((.cse34 (+ (* 18446744073709551616 aux_div_aux_mod_memset_impl_~i~6_43_54) aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse41)) (.cse39 (+ aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 .cse41)) (.cse36 (+ (mod aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (- 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|)) (.cse37 (+ (- 18446744073709551616) (mod aux_mod_memset_impl_~i~6_43 18446744073709551616) |c_aws_array_list_clean_up_#in~list.offset|))) (and (< aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65 18446744073709551616) (< .cse34 18446744073709551616) (= |c_#memory_$Pointer$.offset| (let ((.cse35 (store |c_old(#memory_$Pointer$.offset)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5959))) (store .cse35 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse35 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5965) .cse3 v_ArrVal_5972) .cse4 v_ArrVal_5979) .cse5 v_ArrVal_5981) .cse6 v_ArrVal_5989) .cse7 v_ArrVal_5993) .cse8 v_ArrVal_5999) .cse9 v_ArrVal_6006) .cse36 v_ArrVal_6015) .cse37 v_ArrVal_6017)))) (= |c_#memory_int| (let ((.cse38 (store |c_old(#memory_int)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5961))) (store .cse38 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse38 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5967) .cse3 v_ArrVal_5973) .cse4 v_ArrVal_5980) .cse5 v_ArrVal_5984) .cse6 v_ArrVal_5991) .cse7 v_ArrVal_5995) .cse8 v_ArrVal_6000) .cse9 v_ArrVal_6007) .cse36 v_ArrVal_6011) .cse37 v_ArrVal_6018)))) (< 9223372036854775807 .cse34) (< .cse39 18446744073709551616) (< 9223372036854775807 .cse39) (= (let ((.cse40 (store |c_old(#memory_$Pointer$.base)| |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5960))) (store .cse40 |c_aws_array_list_clean_up_#in~list.base| (store (store (store (store (store (store (store (store (store (store (select .cse40 |c_aws_array_list_clean_up_#in~list.base|) |c_aws_array_list_clean_up_#in~list.offset| v_ArrVal_5968) .cse3 v_ArrVal_5974) .cse4 v_ArrVal_5977) .cse5 v_ArrVal_5986) .cse6 v_ArrVal_5992) .cse7 v_ArrVal_5996) .cse8 v_ArrVal_6001) .cse9 v_ArrVal_6010) .cse36 v_ArrVal_6013) .cse37 v_ArrVal_6019))) |c_#memory_$Pointer$.base|) (< 9223372036854775807 aux_mod_aux_mod_aux_mod_memset_impl_~i~6_43_54_65))))) (< aux_mod_memset_impl_~i~6_43 18446744073709551616))) (= (select |c_old(#valid)| |v_aws_array_list_is_valid_~#required_size~0.base_221|) 0) (= (select .cse42 |v___CPROVER_overflow_mult_~#c~1.base_523|) 0) (= |c_#valid| (store (store .cse42 |v___CPROVER_overflow_mult_~#c~1.base_523| v_ArrVal_5958) |v_aws_array_list_is_valid_~#required_size~0.base_221| v_ArrVal_5962))))))) is different from false [2022-11-25 17:51:36,844 WARN L233 SmtUtils]: Spent 3.88m on a formula simplification. DAG size of input: 230 DAG size of output: 46 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 17:51:36,845 INFO L321 Elim1Store]: treesize reduction 528, result has 12.1 percent of original size [2022-11-25 17:51:36,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 1430 treesize of output 2128 [2022-11-25 17:51:40,568 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1561 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:51:46,907 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1519 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:51:54,562 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1519 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:51:56,567 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1519 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:52:02,419 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1561 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:52:06,997 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1519 |v_aws_array_list_is_valid_~#required_size~0.base_221|) [2022-11-25 17:52:11,700 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1561 v_prenex_1519) [2022-11-25 17:52:13,705 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1519 v_prenex_1477) [2022-11-25 17:52:17,697 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1561 |v_aws_array_list_is_valid_~#required_size~0.base_221|) [2022-11-25 17:52:19,704 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1561 |v_aws_array_list_is_valid_~#required_size~0.base_221|) [2022-11-25 17:52:21,709 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1477 |v_aws_array_list_is_valid_~#required_size~0.base_221|) [2022-11-25 17:52:23,715 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1477 |v_aws_array_list_is_valid_~#required_size~0.base_221|) [2022-11-25 17:52:26,761 INFO L217 Elim1Store]: Index analysis took 34204 ms [2022-11-25 17:56:19,657 WARN L233 SmtUtils]: Spent 3.88m on a formula simplification. DAG size of input: 230 DAG size of output: 46 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 17:56:19,659 INFO L321 Elim1Store]: treesize reduction 528, result has 12.1 percent of original size [2022-11-25 17:56:19,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 9 new quantified variables, introduced 8 case distinctions, treesize of input 1211 treesize of output 1909 [2022-11-25 17:56:23,755 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1561 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:56:25,760 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1561 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:56:27,766 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= v_prenex_1519 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:56:29,777 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= v_prenex_1519 |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:56:31,782 WARN L161 IndexEqualityManager]: solver failed to check if following equality is implied: (= |v_aws_array_list_is_valid_~#required_size~0.base_221| |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|) [2022-11-25 17:56:33,789 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |v_aws_array_list_is_valid_~#required_size~0.base_221| |ULTIMATE.start_aws_priority_queue_clean_up_~queue#1.base|)