./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN --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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- 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-6b4ec56 [2022-11-20 10:30:32,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:30:32,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:30:32,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:30:32,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:30:32,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:30:32,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:30:32,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:30:32,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:30:32,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:30:32,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:30:32,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:30:32,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:30:32,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:30:32,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:30:32,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:30:32,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:30:32,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:30:32,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:30:32,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:30:32,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:30:32,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:30:32,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:30:32,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:30:32,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:30:32,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:30:32,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:30:32,355 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:30:32,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:30:32,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:30:32,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:30:32,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:30:32,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:30:32,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:30:32,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:30:32,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:30:32,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:30:32,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:30:32,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:30:32,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:30:32,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:30:32,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:30:32,413 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:30:32,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:30:32,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:30:32,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:30:32,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:30:32,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:30:32,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:30:32,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:30:32,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:30:32,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:30:32,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:30:32,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:30:32,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:30:32,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:30:32,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:30:32,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:30:32,419 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:30:32,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:30:32,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:30:32,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:30:32,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:30:32,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:32,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:30:32,420 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:30:32,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:30:32,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:30:32,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:30:32,421 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:30:32,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:30:32,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:30:32,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2022-11-20 10:30:32,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:30:32,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:30:32,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:30:32,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:30:32,806 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:30:32,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-11-20 10:30:35,962 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:30:36,482 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:30:36,486 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-11-20 10:30:36,524 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/data/28cc1ef90/414b533cd9fa4f289533ea94cd8d7651/FLAG9830cdcb8 [2022-11-20 10:30:36,546 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/data/28cc1ef90/414b533cd9fa4f289533ea94cd8d7651 [2022-11-20 10:30:36,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:30:36,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:30:36,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:36,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:30:36,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:30:36,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d9f50c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:36, skipping insertion in model container [2022-11-20 10:30:36,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:36" (1/1) ... [2022-11-20 10:30:36,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:30:36,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:30:36,956 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_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-11-20 10:30:36,964 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_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-11-20 10:30:37,825 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:30:37,926 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,927 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,928 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,928 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,930 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,942 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,943 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,945 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,946 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,948 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,949 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,950 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:37,950 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,330 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:30:38,331 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:30:38,333 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:30:38,334 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:30:38,336 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:30:38,338 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:30:38,340 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:30:38,341 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:30:38,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:30:38,342 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:30:38,524 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,532 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:38,667 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:30:38,691 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_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-11-20 10:30:38,697 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_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-11-20 10:30:38,756 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 10:30:38,780 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,781 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,782 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,783 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,783 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,795 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,811 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,812 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,813 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,815 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,815 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,816 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,890 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 10:30:38,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 10:30:38,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 10:30:38,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 10:30:38,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 10:30:38,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 10:30:38,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 10:30:38,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 10:30:38,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 10:30:38,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 10:30:38,979 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:38,984 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 10:30:39,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:30:39,262 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:30:39,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39 WrapperNode [2022-11-20 10:30:39,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:30:39,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:39,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:30:39,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:30:39,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,429 INFO L138 Inliner]: procedures = 690, calls = 1681, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 590 [2022-11-20 10:30:39,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:30:39,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:30:39,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:30:39,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:30:39,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:30:39,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:30:39,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:30:39,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:30:39,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (1/1) ... [2022-11-20 10:30:39,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:30:39,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:39,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:30:39,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:30:39,592 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 10:30:39,593 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 10:30:39,593 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 10:30:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 10:30:39,594 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 10:30:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 10:30:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:30:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 10:30:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 10:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 10:30:39,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 10:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 10:30:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:30:39,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 10:30:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:30:39,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:30:39,598 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 10:30:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 10:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 10:30:39,599 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 10:30:39,599 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 10:30:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 10:30:39,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 10:30:39,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 10:30:39,601 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 10:30:39,602 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 10:30:39,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:30:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 10:30:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 10:30:39,603 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 10:30:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 10:30:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 10:30:39,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 10:30:39,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:30:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:30:39,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 10:30:39,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:30:40,015 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:30:40,019 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:30:41,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:30:41,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:30:41,039 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 10:30:41,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:41 BoogieIcfgContainer [2022-11-20 10:30:41,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:30:41,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:30:41,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:30:41,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:30:41,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:30:36" (1/3) ... [2022-11-20 10:30:41,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a105be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:41, skipping insertion in model container [2022-11-20 10:30:41,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:39" (2/3) ... [2022-11-20 10:30:41,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a105be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:30:41, skipping insertion in model container [2022-11-20 10:30:41,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:41" (3/3) ... [2022-11-20 10:30:41,083 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2022-11-20 10:30:41,104 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:30:41,105 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:30:41,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:30:41,187 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;@3a728a0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:30:41,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:30:41,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-11-20 10:30:41,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 10:30:41,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:41,208 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:41,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:41,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2022-11-20 10:30:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891510019] [2022-11-20 10:30:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:30:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:30:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:30:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:30:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:30:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:30:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:30:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:30:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:30:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:30:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:42,142 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-20 10:30:42,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:42,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891510019] [2022-11-20 10:30:42,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891510019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:42,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:42,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:30:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179091013] [2022-11-20 10:30:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:42,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:30:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:30:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:42,193 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:30:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:42,753 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2022-11-20 10:30:42,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:30:42,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-11-20 10:30:42,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:42,767 INFO L225 Difference]: With dead ends: 248 [2022-11-20 10:30:42,767 INFO L226 Difference]: Without dead ends: 123 [2022-11-20 10:30:42,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:30:42,780 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 41 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:42,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 163 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 10:30:42,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-20 10:30:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2022-11-20 10:30:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-20 10:30:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2022-11-20 10:30:42,879 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2022-11-20 10:30:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:42,880 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2022-11-20 10:30:42,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 10:30:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2022-11-20 10:30:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 10:30:42,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:42,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:42,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:30:42,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:42,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2022-11-20 10:30:42,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540497747] [2022-11-20 10:30:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:42,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:30:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 10:30:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 10:30:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 10:30:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 10:30:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 10:30:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 10:30:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 10:30:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 10:30:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 10:30:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 10:30:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-20 10:30:43,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:43,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540497747] [2022-11-20 10:30:43,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540497747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:30:43,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98332870] [2022-11-20 10:30:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:43,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:43,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:30:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:30:44,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:44,309 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 10:30:44,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:44,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98332870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:44,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:30:44,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-20 10:30:44,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350441411] [2022-11-20 10:30:44,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:30:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:30:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 10:30:44,313 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 10:30:44,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:44,566 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2022-11-20 10:30:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:30:44,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2022-11-20 10:30:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:44,568 INFO L225 Difference]: With dead ends: 193 [2022-11-20 10:30:44,568 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 10:30:44,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:30:44,570 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:44,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 403 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:30:44,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 10:30:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-20 10:30:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2022-11-20 10:30:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-11-20 10:30:44,587 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2022-11-20 10:30:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:44,587 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-11-20 10:30:44,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 10:30:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-11-20 10:30:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-20 10:30:44,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:44,590 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:44,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:30:44,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:44,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:44,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2022-11-20 10:30:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:44,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467352527] [2022-11-20 10:30:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:44,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:44,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244126710] [2022-11-20 10:30:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:44,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:44,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:44,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:30:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:45,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 10:30:45,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 10:30:45,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:30:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:30:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467352527] [2022-11-20 10:30:45,541 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:30:45,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244126710] [2022-11-20 10:30:45,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244126710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:30:45,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:30:45,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:30:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589086871] [2022-11-20 10:30:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:30:45,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:30:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:30:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:30:45,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:30:45,544 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 10:30:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:30:45,861 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2022-11-20 10:30:45,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 10:30:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-11-20 10:30:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:30:45,867 INFO L225 Difference]: With dead ends: 182 [2022-11-20 10:30:45,867 INFO L226 Difference]: Without dead ends: 114 [2022-11-20 10:30:45,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:30:45,871 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:30:45,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 565 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:30:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-20 10:30:45,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-11-20 10:30:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-20 10:30:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2022-11-20 10:30:45,898 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2022-11-20 10:30:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:30:45,899 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2022-11-20 10:30:45,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-20 10:30:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2022-11-20 10:30:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 10:30:45,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:30:45,907 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:30:45,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 10:30:46,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:46,116 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:30:46,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:30:46,116 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2022-11-20 10:30:46,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:30:46,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523692714] [2022-11-20 10:30:46,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:46,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:30:46,232 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:30:46,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078047555] [2022-11-20 10:30:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:30:46,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:30:46,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:30:46,236 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:30:46,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:30:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:30:46,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2483 conjuncts, 260 conjunts are in the unsatisfiable core [2022-11-20 10:30:47,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:30:47,049 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 [2022-11-20 10:30:47,323 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 [2022-11-20 10:30:48,163 INFO L321 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2022-11-20 10:30:48,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2022-11-20 10:30:48,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 10:30:48,568 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-20 10:30:48,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-20 10:31:12,422 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification. DAG size of input: 55 DAG size of output: 52 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:31:12,933 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:31:12,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:12,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 228 [2022-11-20 10:31:13,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 10:31:13,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 112 treesize of output 174 [2022-11-20 10:31:25,023 INFO L321 Elim1Store]: treesize reduction 101, result has 15.1 percent of original size [2022-11-20 10:31:25,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 7 case distinctions, treesize of input 112 treesize of output 116 [2022-11-20 10:31:25,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:31:25,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:25,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:25,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2022-11-20 10:31:26,304 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-20 10:31:26,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 77 [2022-11-20 10:31:26,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:31:28,949 INFO L321 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2022-11-20 10:31:28,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 74 [2022-11-20 10:31:29,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 10:31:32,287 INFO L321 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2022-11-20 10:31:32,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 86 [2022-11-20 10:31:32,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-11-20 10:31:32,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:32,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:32,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 36 [2022-11-20 10:31:35,419 INFO L321 Elim1Store]: treesize reduction 63, result has 22.2 percent of original size [2022-11-20 10:31:35,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 116 [2022-11-20 10:31:35,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 29 [2022-11-20 10:31:35,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:35,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:31:35,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2022-11-20 10:31:50,459 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification that was a NOOP. DAG size: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:32:23,831 WARN L233 SmtUtils]: Spent 15.81s on a formula simplification. DAG size of input: 242 DAG size of output: 222 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:32:40,411 WARN L233 SmtUtils]: Spent 8.68s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:32:59,158 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:34:23,238 WARN L233 SmtUtils]: Spent 1.07m on a formula simplification. DAG size of input: 290 DAG size of output: 272 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:35:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 58 refuted. 4 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 10:35:37,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:46,424 WARN L233 SmtUtils]: Spent 7.41s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 10:35:58,981 WARN L233 SmtUtils]: Spent 11.80s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-11-20 10:36:14,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:36:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523692714] [2022-11-20 10:36:14,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:36:14,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078047555] [2022-11-20 10:36:14,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078047555] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:36:14,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:36:14,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2022-11-20 10:36:14,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973885068] [2022-11-20 10:36:14,793 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:36:14,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 10:36:14,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:36:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 10:36:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=2753, Unknown=45, NotChecked=0, Total=2970 [2022-11-20 10:36:14,796 INFO L87 Difference]: Start difference. First operand 114 states and 139 transitions. Second operand has 51 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 37 states have internal predecessors, (76), 14 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 10:37:05,716 WARN L233 SmtUtils]: Spent 27.59s on a formula simplification. DAG size of input: 83 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:37:17,128 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification that was a NOOP. DAG size: 228 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:37:31,088 WARN L233 SmtUtils]: Spent 8.72s on a formula simplification that was a NOOP. DAG size: 233 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:37:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:31,918 INFO L93 Difference]: Finished difference Result 181 states and 229 transitions. [2022-11-20 10:37:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 10:37:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 37 states have internal predecessors, (76), 14 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) Word has length 116 [2022-11-20 10:37:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:31,922 INFO L225 Difference]: With dead ends: 181 [2022-11-20 10:37:31,922 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 10:37:31,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 65 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 240.9s TimeCoverageRelationStatistics Valid=337, Invalid=5306, Unknown=57, NotChecked=0, Total=5700 [2022-11-20 10:37:31,925 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 101 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1791 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:31,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1766 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1010 Invalid, 0 Unknown, 1791 Unchecked, 1.9s Time] [2022-11-20 10:37:31,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 10:37:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2022-11-20 10:37:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 114 states have internal predecessors, (126), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (51), 38 states have call predecessors, (51), 40 states have call successors, (51) [2022-11-20 10:37:31,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 219 transitions. [2022-11-20 10:37:31,961 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 219 transitions. Word has length 116 [2022-11-20 10:37:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:31,962 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 219 transitions. [2022-11-20 10:37:31,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 37 states have internal predecessors, (76), 14 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (16), 13 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-20 10:37:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 219 transitions. [2022-11-20 10:37:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 10:37:31,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:31,964 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:31,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:32,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:32,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:32,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2057609130, now seen corresponding path program 1 times [2022-11-20 10:37:32,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:32,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277718766] [2022-11-20 10:37:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:32,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:32,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:32,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518129998] [2022-11-20 10:37:32,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:32,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:32,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:32,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:32,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 10:37:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:32,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:37:32,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-20 10:37:32,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:32,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277718766] [2022-11-20 10:37:32,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518129998] [2022-11-20 10:37:32,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518129998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:32,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:32,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:37:32,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744000429] [2022-11-20 10:37:32,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:32,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:37:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:37:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:37:32,833 INFO L87 Difference]: Start difference. First operand 173 states and 219 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:37:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:32,911 INFO L93 Difference]: Finished difference Result 265 states and 344 transitions. [2022-11-20 10:37:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:37:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2022-11-20 10:37:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:32,913 INFO L225 Difference]: With dead ends: 265 [2022-11-20 10:37:32,913 INFO L226 Difference]: Without dead ends: 178 [2022-11-20 10:37:32,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:37:32,915 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 7 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 409 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 [2022-11-20 10:37:32,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 409 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:37:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-20 10:37:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2022-11-20 10:37:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 116 states have internal predecessors, (128), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (51), 38 states have call predecessors, (51), 40 states have call successors, (51) [2022-11-20 10:37:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 221 transitions. [2022-11-20 10:37:32,946 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 221 transitions. Word has length 116 [2022-11-20 10:37:32,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:32,947 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 221 transitions. [2022-11-20 10:37:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:37:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 221 transitions. [2022-11-20 10:37:32,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 10:37:32,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:32,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:37:32,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:33,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:33,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1239677655, now seen corresponding path program 1 times [2022-11-20 10:37:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:33,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604061092] [2022-11-20 10:37:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:33,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:33,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:33,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950812333] [2022-11-20 10:37:33,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:33,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:33,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:33,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:33,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 10:37:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:33,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 10:37:33,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 10:37:34,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:37:34,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604061092] [2022-11-20 10:37:34,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:34,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950812333] [2022-11-20 10:37:34,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950812333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:37:34,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:37:34,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-20 10:37:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501289787] [2022-11-20 10:37:34,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:37:34,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 10:37:34,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 10:37:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-20 10:37:34,190 INFO L87 Difference]: Start difference. First operand 175 states and 221 transitions. Second operand has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 10:37:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:34,825 INFO L93 Difference]: Finished difference Result 261 states and 334 transitions. [2022-11-20 10:37:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:37:34,828 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 134 [2022-11-20 10:37:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:34,830 INFO L225 Difference]: With dead ends: 261 [2022-11-20 10:37:34,830 INFO L226 Difference]: Without dead ends: 189 [2022-11-20 10:37:34,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-20 10:37:34,832 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 12 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:34,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1664 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:37:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-20 10:37:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 186. [2022-11-20 10:37:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 122 states have (on average 1.1557377049180328) internal successors, (141), 126 states have internal predecessors, (141), 42 states have call successors, (42), 20 states have call predecessors, (42), 21 states have return successors, (55), 39 states have call predecessors, (55), 40 states have call successors, (55) [2022-11-20 10:37:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 238 transitions. [2022-11-20 10:37:34,870 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 238 transitions. Word has length 134 [2022-11-20 10:37:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:34,871 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 238 transitions. [2022-11-20 10:37:34,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 4 states have call successors, (20), 2 states have call predecessors, (20), 6 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 10:37:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 238 transitions. [2022-11-20 10:37:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 10:37:34,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:34,877 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:37:34,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:37:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 10:37:35,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash 637355589, now seen corresponding path program 1 times [2022-11-20 10:37:35,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:35,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585101965] [2022-11-20 10:37:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:35,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:35,180 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:35,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115970742] [2022-11-20 10:37:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:35,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:35,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:35,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:35,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 10:37:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 10:37:35,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:35,745 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 [2022-11-20 10:37:36,082 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 [2022-11-20 10:37:36,164 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 [2022-11-20 10:37:40,327 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 45 treesize of output 32 [2022-11-20 10:37:40,478 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-20 10:37:40,479 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 [2022-11-20 10:37:40,951 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_580 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_580) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 10:37:49,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:37:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 10:37:49,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:37:52,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:37:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585101965] [2022-11-20 10:37:52,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:37:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115970742] [2022-11-20 10:37:52,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115970742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:37:52,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:37:52,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-20 10:37:52,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046165026] [2022-11-20 10:37:52,079 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:37:52,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 10:37:52,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:37:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 10:37:52,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=388, Unknown=17, NotChecked=40, Total=506 [2022-11-20 10:37:52,080 INFO L87 Difference]: Start difference. First operand 186 states and 238 transitions. Second operand has 22 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:37:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:37:57,481 INFO L93 Difference]: Finished difference Result 294 states and 371 transitions. [2022-11-20 10:37:57,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:37:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 122 [2022-11-20 10:37:57,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:37:57,483 INFO L225 Difference]: With dead ends: 294 [2022-11-20 10:37:57,484 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 10:37:57,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 164 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=86, Invalid=594, Unknown=26, NotChecked=50, Total=756 [2022-11-20 10:37:57,485 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 128 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:37:57,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 780 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 443 Invalid, 0 Unknown, 810 Unchecked, 1.0s Time] [2022-11-20 10:37:57,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 10:37:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2022-11-20 10:37:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 135 states have internal predecessors, (148), 43 states have call successors, (43), 21 states have call predecessors, (43), 24 states have return successors, (59), 40 states have call predecessors, (59), 41 states have call successors, (59) [2022-11-20 10:37:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 250 transitions. [2022-11-20 10:37:57,517 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 250 transitions. Word has length 122 [2022-11-20 10:37:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:37:57,517 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 250 transitions. [2022-11-20 10:37:57,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.2) internal successors, (64), 18 states have internal predecessors, (64), 8 states have call successors, (18), 7 states have call predecessors, (18), 8 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:37:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 250 transitions. [2022-11-20 10:37:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 10:37:57,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:37:57,520 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:37:57,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 10:37:57,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 10:37:57,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:37:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:37:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 196441924, now seen corresponding path program 1 times [2022-11-20 10:37:57,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:37:57,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379530101] [2022-11-20 10:37:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:57,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:37:57,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:37:57,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989264127] [2022-11-20 10:37:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:37:57,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:37:57,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:37:57,824 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:37:57,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 10:37:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:37:58,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 10:37:58,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:37:58,557 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 [2022-11-20 10:37:58,872 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 22 treesize of output 21 [2022-11-20 10:37:59,223 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_704 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_704)))) is different from true [2022-11-20 10:38:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-20 10:38:07,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379530101] [2022-11-20 10:38:07,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:38:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989264127] [2022-11-20 10:38:07,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989264127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:07,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:07,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 10:38:07,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205420864] [2022-11-20 10:38:07,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:07,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:38:07,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:07,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:38:07,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=239, Unknown=21, NotChecked=32, Total=342 [2022-11-20 10:38:07,703 INFO L87 Difference]: Start difference. First operand 197 states and 250 transitions. Second operand has 19 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-20 10:38:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:09,079 INFO L93 Difference]: Finished difference Result 309 states and 397 transitions. [2022-11-20 10:38:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 10:38:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 133 [2022-11-20 10:38:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:09,082 INFO L225 Difference]: With dead ends: 309 [2022-11-20 10:38:09,083 INFO L226 Difference]: Without dead ends: 213 [2022-11-20 10:38:09,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=68, Invalid=377, Unknown=21, NotChecked=40, Total=506 [2022-11-20 10:38:09,084 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 72 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 623 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:09,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 662 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 550 Invalid, 0 Unknown, 623 Unchecked, 1.1s Time] [2022-11-20 10:38:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-20 10:38:09,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 199. [2022-11-20 10:38:09,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 137 states have internal predecessors, (150), 42 states have call successors, (42), 22 states have call predecessors, (42), 25 states have return successors, (59), 39 states have call predecessors, (59), 40 states have call successors, (59) [2022-11-20 10:38:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 251 transitions. [2022-11-20 10:38:09,116 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 251 transitions. Word has length 133 [2022-11-20 10:38:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:09,117 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 251 transitions. [2022-11-20 10:38:09,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-20 10:38:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 251 transitions. [2022-11-20 10:38:09,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:38:09,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:09,119 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:38:09,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:09,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:09,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:09,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:09,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1868050624, now seen corresponding path program 1 times [2022-11-20 10:38:09,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:09,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424937904] [2022-11-20 10:38:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:09,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:09,409 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:38:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [210777299] [2022-11-20 10:38:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:09,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:09,411 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:09,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 10:38:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:09,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-20 10:38:09,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:10,996 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_797 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_797))) (exists ((v_ArrVal_798 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_798) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-20 10:38:11,660 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 10:38:11,660 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 1 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 10:38:11,669 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 14 treesize of output 11 [2022-11-20 10:38:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 53 proven. 14 refuted. 4 times theorem prover too weak. 23 trivial. 3 not checked. [2022-11-20 10:38:20,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:21,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:21,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424937904] [2022-11-20 10:38:21,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:38:21,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210777299] [2022-11-20 10:38:21,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210777299] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:21,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:21,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-11-20 10:38:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702637376] [2022-11-20 10:38:21,899 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:21,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 10:38:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:21,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 10:38:21,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=649, Unknown=24, NotChecked=52, Total=812 [2022-11-20 10:38:21,901 INFO L87 Difference]: Start difference. First operand 199 states and 251 transitions. Second operand has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-20 10:38:26,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:26,270 INFO L93 Difference]: Finished difference Result 377 states and 508 transitions. [2022-11-20 10:38:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:38:26,270 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 124 [2022-11-20 10:38:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:26,273 INFO L225 Difference]: With dead ends: 377 [2022-11-20 10:38:26,273 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 10:38:26,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=185, Invalid=1112, Unknown=39, NotChecked=70, Total=1406 [2022-11-20 10:38:26,275 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 125 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 3042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1297 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:26,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1000 Invalid, 3042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1679 Invalid, 0 Unknown, 1297 Unchecked, 3.5s Time] [2022-11-20 10:38:26,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 10:38:26,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 250. [2022-11-20 10:38:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 166 states have (on average 1.144578313253012) internal successors, (190), 174 states have internal predecessors, (190), 52 states have call successors, (52), 26 states have call predecessors, (52), 31 states have return successors, (96), 49 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-20 10:38:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 338 transitions. [2022-11-20 10:38:26,317 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 338 transitions. Word has length 124 [2022-11-20 10:38:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:26,318 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 338 transitions. [2022-11-20 10:38:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.1739130434782608) internal successors, (73), 22 states have internal predecessors, (73), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-20 10:38:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 338 transitions. [2022-11-20 10:38:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:38:26,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:26,322 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:38:26,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:26,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 10:38:26,534 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:26,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash 461023472, now seen corresponding path program 1 times [2022-11-20 10:38:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:26,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296644184] [2022-11-20 10:38:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:26,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:26,600 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:38:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282104467] [2022-11-20 10:38:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:26,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:26,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:26,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:26,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 10:38:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:27,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:38:27,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:27,296 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 10:38:27,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:38:27,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:27,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296644184] [2022-11-20 10:38:27,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:38:27,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282104467] [2022-11-20 10:38:27,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282104467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:38:27,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:38:27,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:38:27,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063860149] [2022-11-20 10:38:27,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:38:27,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:38:27,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:38:27,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:38:27,299 INFO L87 Difference]: Start difference. First operand 250 states and 338 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:38:27,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:27,694 INFO L93 Difference]: Finished difference Result 365 states and 505 transitions. [2022-11-20 10:38:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:38:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 118 [2022-11-20 10:38:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:27,697 INFO L225 Difference]: With dead ends: 365 [2022-11-20 10:38:27,697 INFO L226 Difference]: Without dead ends: 257 [2022-11-20 10:38:27,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:38:27,699 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 16 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:27,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 475 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 10:38:27,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-20 10:38:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 251. [2022-11-20 10:38:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 167 states have (on average 1.1377245508982037) internal successors, (190), 175 states have internal predecessors, (190), 52 states have call successors, (52), 26 states have call predecessors, (52), 31 states have return successors, (96), 49 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-20 10:38:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 338 transitions. [2022-11-20 10:38:27,741 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 338 transitions. Word has length 118 [2022-11-20 10:38:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:27,741 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 338 transitions. [2022-11-20 10:38:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 10:38:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 338 transitions. [2022-11-20 10:38:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:38:27,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:27,744 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:38:27,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 10:38:27,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2023595590, now seen corresponding path program 1 times [2022-11-20 10:38:27,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:27,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111297444] [2022-11-20 10:38:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:28,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:38:28,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725623064] [2022-11-20 10:38:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:28,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:28,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:28,048 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:28,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 10:38:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:28,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-20 10:38:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:28,630 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 [2022-11-20 10:38:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:29,163 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 [2022-11-20 10:38:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:29,187 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 [2022-11-20 10:38:29,465 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1021 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1021))) (exists ((v_ArrVal_1020 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1020) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 10:38:30,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:30,129 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 31 treesize of output 19 [2022-11-20 10:38:30,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:30,139 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 16 treesize of output 18 [2022-11-20 10:38:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 10:38:30,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:38:30,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:38:30,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111297444] [2022-11-20 10:38:30,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:38:30,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725623064] [2022-11-20 10:38:30,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725623064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:38:30,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:38:30,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-20 10:38:30,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003113945] [2022-11-20 10:38:30,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:38:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:38:30,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:38:30,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:38:30,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=4, NotChecked=28, Total=272 [2022-11-20 10:38:30,846 INFO L87 Difference]: Start difference. First operand 251 states and 338 transitions. Second operand has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 10:38:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:38:31,794 INFO L93 Difference]: Finished difference Result 360 states and 474 transitions. [2022-11-20 10:38:31,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 10:38:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 118 [2022-11-20 10:38:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:38:31,797 INFO L225 Difference]: With dead ends: 360 [2022-11-20 10:38:31,797 INFO L226 Difference]: Without dead ends: 251 [2022-11-20 10:38:31,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=4, NotChecked=32, Total=342 [2022-11-20 10:38:31,799 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 98 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 687 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:38:31,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 468 Invalid, 1073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 313 Invalid, 0 Unknown, 687 Unchecked, 0.8s Time] [2022-11-20 10:38:31,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-11-20 10:38:31,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2022-11-20 10:38:31,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 167 states have (on average 1.1377245508982037) internal successors, (190), 175 states have internal predecessors, (190), 52 states have call successors, (52), 26 states have call predecessors, (52), 31 states have return successors, (95), 49 states have call predecessors, (95), 50 states have call successors, (95) [2022-11-20 10:38:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 337 transitions. [2022-11-20 10:38:31,838 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 337 transitions. Word has length 118 [2022-11-20 10:38:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:38:31,839 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 337 transitions. [2022-11-20 10:38:31,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 5 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-20 10:38:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 337 transitions. [2022-11-20 10:38:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 10:38:31,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:38:31,842 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:38:31,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 10:38:32,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:32,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:38:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:38:32,067 INFO L85 PathProgramCache]: Analyzing trace with hash 927216381, now seen corresponding path program 1 times [2022-11-20 10:38:32,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:38:32,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287977884] [2022-11-20 10:38:32,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:32,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:38:32,141 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:38:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279180527] [2022-11-20 10:38:32,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:38:32,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:38:32,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:32,143 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:38:32,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 10:38:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:38:32,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-20 10:38:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:38:32,728 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 [2022-11-20 10:38:33,056 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 13 treesize of output 9 [2022-11-20 10:38:33,120 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 [2022-11-20 10:38:33,293 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 21 treesize of output 20 [2022-11-20 10:38:33,450 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 10:38:33,450 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 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 10:38:33,789 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1152 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1152))) is different from true [2022-11-20 10:38:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:38:34,471 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 16 treesize of output 18 [2022-11-20 10:38:34,493 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:38:34,494 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 11 treesize of output 11 [2022-11-20 10:38:34,786 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 9 treesize of output 3 [2022-11-20 10:38:51,773 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1153 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1153)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 10:39:00,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:00,529 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:39:00,533 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 10:39:00,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 10:39:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-20 10:39:00,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:03,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:03,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287977884] [2022-11-20 10:39:03,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:39:03,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279180527] [2022-11-20 10:39:03,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279180527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:03,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:03,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-20 10:39:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853032550] [2022-11-20 10:39:03,200 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:03,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 10:39:03,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 10:39:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1094, Unknown=65, NotChecked=138, Total=1406 [2022-11-20 10:39:03,202 INFO L87 Difference]: Start difference. First operand 251 states and 337 transitions. Second operand has 37 states, 34 states have (on average 2.588235294117647) internal successors, (88), 30 states have internal predecessors, (88), 13 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-20 10:39:25,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:25,514 INFO L93 Difference]: Finished difference Result 372 states and 487 transitions. [2022-11-20 10:39:25,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-20 10:39:25,515 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.588235294117647) internal successors, (88), 30 states have internal predecessors, (88), 13 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) Word has length 130 [2022-11-20 10:39:25,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:25,517 INFO L225 Difference]: With dead ends: 372 [2022-11-20 10:39:25,517 INFO L226 Difference]: Without dead ends: 276 [2022-11-20 10:39:25,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 49.1s TimeCoverageRelationStatistics Valid=266, Invalid=2609, Unknown=103, NotChecked=214, Total=3192 [2022-11-20 10:39:25,519 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 165 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1683 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:25,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1464 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1010 Invalid, 0 Unknown, 1683 Unchecked, 2.0s Time] [2022-11-20 10:39:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-20 10:39:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 273. [2022-11-20 10:39:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 181 states have (on average 1.138121546961326) internal successors, (206), 190 states have internal predecessors, (206), 57 states have call successors, (57), 29 states have call predecessors, (57), 34 states have return successors, (105), 53 states have call predecessors, (105), 55 states have call successors, (105) [2022-11-20 10:39:25,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 368 transitions. [2022-11-20 10:39:25,558 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 368 transitions. Word has length 130 [2022-11-20 10:39:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:25,559 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 368 transitions. [2022-11-20 10:39:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.588235294117647) internal successors, (88), 30 states have internal predecessors, (88), 13 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-20 10:39:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 368 transitions. [2022-11-20 10:39:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 10:39:25,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:25,562 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:25,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:25,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:25,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:25,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1514042583, now seen corresponding path program 2 times [2022-11-20 10:39:25,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:25,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312445833] [2022-11-20 10:39:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:25,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:25,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:39:25,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085310128] [2022-11-20 10:39:25,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:39:25,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:25,844 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:25,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 10:39:26,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:39:26,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:39:26,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 10:39:26,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 10:39:28,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:29,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:29,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312445833] [2022-11-20 10:39:29,059 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:39:29,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085310128] [2022-11-20 10:39:29,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085310128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:29,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:29,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-20 10:39:29,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989572707] [2022-11-20 10:39:29,059 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:29,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 10:39:29,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 10:39:29,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-11-20 10:39:29,061 INFO L87 Difference]: Start difference. First operand 273 states and 368 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 10:39:32,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:32,910 INFO L93 Difference]: Finished difference Result 407 states and 546 transitions. [2022-11-20 10:39:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 10:39:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) Word has length 132 [2022-11-20 10:39:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:32,913 INFO L225 Difference]: With dead ends: 407 [2022-11-20 10:39:32,913 INFO L226 Difference]: Without dead ends: 318 [2022-11-20 10:39:32,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 10:39:32,915 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 128 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:32,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 837 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1397 Invalid, 0 Unknown, 128 Unchecked, 2.5s Time] [2022-11-20 10:39:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-20 10:39:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 298. [2022-11-20 10:39:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 200 states have (on average 1.135) internal successors, (227), 210 states have internal predecessors, (227), 60 states have call successors, (60), 31 states have call predecessors, (60), 37 states have return successors, (118), 56 states have call predecessors, (118), 58 states have call successors, (118) [2022-11-20 10:39:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 405 transitions. [2022-11-20 10:39:32,955 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 405 transitions. Word has length 132 [2022-11-20 10:39:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:32,956 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 405 transitions. [2022-11-20 10:39:32,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 8 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 8 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 10:39:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 405 transitions. [2022-11-20 10:39:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:39:32,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:32,959 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:32,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:33,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:33,169 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:33,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1433336346, now seen corresponding path program 1 times [2022-11-20 10:39:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:33,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816277787] [2022-11-20 10:39:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:33,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:33,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:39:33,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487852853] [2022-11-20 10:39:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:33,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:33,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:33,269 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:33,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 10:39:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:33,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 10:39:33,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 10:39:33,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:39:33,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816277787] [2022-11-20 10:39:33,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:39:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487852853] [2022-11-20 10:39:33,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487852853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:33,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:33,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:39:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637924996] [2022-11-20 10:39:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:33,968 INFO L87 Difference]: Start difference. First operand 298 states and 405 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:39:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:34,298 INFO L93 Difference]: Finished difference Result 432 states and 598 transitions. [2022-11-20 10:39:34,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:39:34,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-11-20 10:39:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:34,301 INFO L225 Difference]: With dead ends: 432 [2022-11-20 10:39:34,301 INFO L226 Difference]: Without dead ends: 290 [2022-11-20 10:39:34,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:34,302 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 10 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 503 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:34,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-20 10:39:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2022-11-20 10:39:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 191 states have (on average 1.1204188481675392) internal successors, (214), 199 states have internal predecessors, (214), 60 states have call successors, (60), 31 states have call predecessors, (60), 35 states have return successors, (111), 56 states have call predecessors, (111), 58 states have call successors, (111) [2022-11-20 10:39:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2022-11-20 10:39:34,341 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 124 [2022-11-20 10:39:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:34,341 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2022-11-20 10:39:34,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 10:39:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2022-11-20 10:39:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 10:39:34,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:34,344 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:34,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:34,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 10:39:34,554 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash -111698537, now seen corresponding path program 1 times [2022-11-20 10:39:34,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:34,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309649072] [2022-11-20 10:39:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:34,619 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:39:34,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810900445] [2022-11-20 10:39:34,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:34,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:34,621 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:34,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 10:39:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:35,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 10:39:35,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:35,802 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1478 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1478) |c_#memory_int|)) is different from true [2022-11-20 10:39:35,993 WARN L859 $PredicateComparison]: unable to prove that (and (not (= 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))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1478 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1478) |c_#memory_int|))) is different from true [2022-11-20 10:39:36,068 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-20 10:39:36,069 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 1 case distinctions, treesize of input 16 treesize of output 16 [2022-11-20 10:39:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 8 refuted. 2 times theorem prover too weak. 23 trivial. 15 not checked. [2022-11-20 10:39:40,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:39:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309649072] [2022-11-20 10:39:41,206 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:39:41,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810900445] [2022-11-20 10:39:41,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810900445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:39:41,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:39:41,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-20 10:39:41,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801210228] [2022-11-20 10:39:41,206 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:39:41,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 10:39:41,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 10:39:41,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=427, Unknown=15, NotChecked=86, Total=600 [2022-11-20 10:39:41,208 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 20 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-20 10:39:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:42,958 INFO L93 Difference]: Finished difference Result 415 states and 557 transitions. [2022-11-20 10:39:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 10:39:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) Word has length 132 [2022-11-20 10:39:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:42,961 INFO L225 Difference]: With dead ends: 415 [2022-11-20 10:39:42,961 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 10:39:42,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=134, Invalid=724, Unknown=20, NotChecked=114, Total=992 [2022-11-20 10:39:42,963 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 108 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 835 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:42,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 583 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 578 Invalid, 0 Unknown, 835 Unchecked, 1.3s Time] [2022-11-20 10:39:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 10:39:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2022-11-20 10:39:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 208 states have (on average 1.1201923076923077) internal successors, (233), 216 states have internal predecessors, (233), 68 states have call successors, (68), 35 states have call predecessors, (68), 38 states have return successors, (128), 63 states have call predecessors, (128), 66 states have call successors, (128) [2022-11-20 10:39:43,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 429 transitions. [2022-11-20 10:39:43,028 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 429 transitions. Word has length 132 [2022-11-20 10:39:43,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:43,029 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 429 transitions. [2022-11-20 10:39:43,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.95) internal successors, (79), 18 states have internal predecessors, (79), 9 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (18), 10 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-20 10:39:43,029 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 429 transitions. [2022-11-20 10:39:43,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 10:39:43,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:43,033 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:39:43,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 10:39:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:39:43,244 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash -879193430, now seen corresponding path program 1 times [2022-11-20 10:39:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:43,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777012701] [2022-11-20 10:39:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:43,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:39:43,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401042414] [2022-11-20 10:39:43,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:43,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:39:43,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:39:43,311 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:39:43,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 10:39:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:43,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2544 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-20 10:39:43,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:39:44,065 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 [2022-11-20 10:39:44,343 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 22 treesize of output 21 [2022-11-20 10:39:44,547 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1595 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1595)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 10:39:44,564 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1595 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1595)))) is different from true [2022-11-20 10:39:44,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:39:44,604 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 22 treesize of output 21 [2022-11-20 10:39:45,237 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1597 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1597)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 10:40:01,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:01,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:01,714 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 10:40:01,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 10:40:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 10 not checked. [2022-11-20 10:40:01,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777012701] [2022-11-20 10:40:04,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:04,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401042414] [2022-11-20 10:40:04,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401042414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:04,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:04,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-20 10:40:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250842435] [2022-11-20 10:40:04,226 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:40:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:40:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=409, Unknown=35, NotChecked=132, Total=650 [2022-11-20 10:40:04,228 INFO L87 Difference]: Start difference. First operand 315 states and 429 transitions. Second operand has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (21), 6 states have call predecessors, (21), 10 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-20 10:40:04,643 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1597 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1597)) |c_#memory_$Pointer$.base|)) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1595 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1595)) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 10:40:08,763 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1595 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1595)))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1597 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1597)))) (or (= (select (select |c_#memory_$Pointer$.base| |c_aws_array_list_is_valid_#in~list.base|) (+ 32 |c_aws_array_list_is_valid_#in~list.offset|)) 0) (not |c_aws_array_list_is_valid_#t~short129|))) is different from true [2022-11-20 10:40:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:13,992 INFO L93 Difference]: Finished difference Result 454 states and 609 transitions. [2022-11-20 10:40:13,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 10:40:13,993 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (21), 6 states have call predecessors, (21), 10 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 135 [2022-11-20 10:40:13,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:13,996 INFO L225 Difference]: With dead ends: 454 [2022-11-20 10:40:13,996 INFO L226 Difference]: Without dead ends: 358 [2022-11-20 10:40:13,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 142 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=121, Invalid=732, Unknown=37, NotChecked=300, Total=1190 [2022-11-20 10:40:13,998 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 92 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1116 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:13,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 805 Invalid, 1807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 653 Invalid, 0 Unknown, 1116 Unchecked, 1.2s Time] [2022-11-20 10:40:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-20 10:40:14,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 327. [2022-11-20 10:40:14,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 216 states have (on average 1.125) internal successors, (243), 224 states have internal predecessors, (243), 71 states have call successors, (71), 37 states have call predecessors, (71), 39 states have return successors, (132), 65 states have call predecessors, (132), 69 states have call successors, (132) [2022-11-20 10:40:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 446 transitions. [2022-11-20 10:40:14,048 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 446 transitions. Word has length 135 [2022-11-20 10:40:14,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:14,049 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 446 transitions. [2022-11-20 10:40:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (21), 6 states have call predecessors, (21), 10 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-20 10:40:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 446 transitions. [2022-11-20 10:40:14,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 10:40:14,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:14,051 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:40:14,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-20 10:40:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 10:40:14,261 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:14,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1108093734, now seen corresponding path program 1 times [2022-11-20 10:40:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:14,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579678610] [2022-11-20 10:40:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:14,326 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:14,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289492001] [2022-11-20 10:40:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:14,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:14,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:14,328 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:14,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 10:40:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:14,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-20 10:40:14,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:15,119 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 21 treesize of output 9 [2022-11-20 10:40:15,425 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 13 treesize of output 9 [2022-11-20 10:40:15,761 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 21 treesize of output 20 [2022-11-20 10:40:16,126 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1738 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1738)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-20 10:40:17,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:17,074 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 [2022-11-20 10:40:17,491 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 9 treesize of output 3 [2022-11-20 10:40:28,992 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1741 Int) (v_ArrVal_1742 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1742))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1741)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 10:40:38,177 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:38,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:38,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:38,186 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:40:38,191 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 10:40:38,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 10:40:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 80 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 3 not checked. [2022-11-20 10:40:38,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:41,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:41,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579678610] [2022-11-20 10:40:41,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:41,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289492001] [2022-11-20 10:40:41,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289492001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:41,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:41,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-20 10:40:41,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540523875] [2022-11-20 10:40:41,378 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:41,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 10:40:41,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 10:40:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1892, Unknown=129, NotChecked=182, Total=2352 [2022-11-20 10:40:41,381 INFO L87 Difference]: Start difference. First operand 327 states and 446 transitions. Second operand has 45 states, 39 states have (on average 2.230769230769231) internal successors, (87), 37 states have internal predecessors, (87), 14 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 10:40:43,180 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1741 Int) (v_ArrVal_1742 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1742))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1741)) |c_#memory_$Pointer$.offset|))) (exists ((v_ArrVal_1738 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1738)) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 10:40:46,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:46,630 INFO L93 Difference]: Finished difference Result 511 states and 686 transitions. [2022-11-20 10:40:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 10:40:46,630 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 2.230769230769231) internal successors, (87), 37 states have internal predecessors, (87), 14 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 129 [2022-11-20 10:40:46,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:46,634 INFO L225 Difference]: With dead ends: 511 [2022-11-20 10:40:46,634 INFO L226 Difference]: Without dead ends: 415 [2022-11-20 10:40:46,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=320, Invalid=4113, Unknown=135, NotChecked=402, Total=4970 [2022-11-20 10:40:46,641 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 113 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1223 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:46,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1861 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1553 Invalid, 0 Unknown, 1223 Unchecked, 2.8s Time] [2022-11-20 10:40:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-20 10:40:46,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 340. [2022-11-20 10:40:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 224 states have (on average 1.1294642857142858) internal successors, (253), 232 states have internal predecessors, (253), 74 states have call successors, (74), 39 states have call predecessors, (74), 41 states have return successors, (135), 68 states have call predecessors, (135), 72 states have call successors, (135) [2022-11-20 10:40:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 462 transitions. [2022-11-20 10:40:46,690 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 462 transitions. Word has length 129 [2022-11-20 10:40:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:46,691 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 462 transitions. [2022-11-20 10:40:46,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 2.230769230769231) internal successors, (87), 37 states have internal predecessors, (87), 14 states have call successors, (21), 8 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2022-11-20 10:40:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 462 transitions. [2022-11-20 10:40:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:40:46,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:46,693 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:40:46,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 10:40:46,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 10:40:46,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:46,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:46,904 INFO L85 PathProgramCache]: Analyzing trace with hash -865928920, now seen corresponding path program 2 times [2022-11-20 10:40:46,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:46,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088271753] [2022-11-20 10:40:46,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:46,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:46,982 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:46,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769274433] [2022-11-20 10:40:46,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:40:46,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:46,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:47,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 10:40:48,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:40:48,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:40:48,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 10:40:48,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:48,320 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1851 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_1851)))) (exists ((v_ArrVal_1853 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) |c_ensure_array_list_has_allocated_data_member_#in~list.offset| v_ArrVal_1853))))) is different from true [2022-11-20 10:40:48,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:48,339 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 [2022-11-20 10:40:48,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:48,351 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 [2022-11-20 10:40:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-20 10:40:48,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:40:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:40:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088271753] [2022-11-20 10:40:49,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:40:49,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769274433] [2022-11-20 10:40:49,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769274433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:40:49,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:40:49,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-20 10:40:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311669721] [2022-11-20 10:40:49,766 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:40:49,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 10:40:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:40:49,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 10:40:49,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=189, Unknown=1, NotChecked=28, Total=272 [2022-11-20 10:40:49,767 INFO L87 Difference]: Start difference. First operand 340 states and 462 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 10:40:51,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:40:51,370 INFO L93 Difference]: Finished difference Result 488 states and 648 transitions. [2022-11-20 10:40:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 10:40:51,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 124 [2022-11-20 10:40:51,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:40:51,372 INFO L225 Difference]: With dead ends: 488 [2022-11-20 10:40:51,372 INFO L226 Difference]: Without dead ends: 333 [2022-11-20 10:40:51,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=348, Unknown=1, NotChecked=40, Total=506 [2022-11-20 10:40:51,373 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 61 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:40:51,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 367 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 539 Invalid, 0 Unknown, 263 Unchecked, 1.1s Time] [2022-11-20 10:40:51,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-20 10:40:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-11-20 10:40:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 219 states have (on average 1.1232876712328768) internal successors, (246), 228 states have internal predecessors, (246), 72 states have call successors, (72), 38 states have call predecessors, (72), 41 states have return successors, (131), 66 states have call predecessors, (131), 70 states have call successors, (131) [2022-11-20 10:40:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 449 transitions. [2022-11-20 10:40:51,425 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 449 transitions. Word has length 124 [2022-11-20 10:40:51,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:40:51,425 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 449 transitions. [2022-11-20 10:40:51,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 5 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-20 10:40:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 449 transitions. [2022-11-20 10:40:51,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 10:40:51,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:40:51,428 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:40:51,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 10:40:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:51,639 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:40:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:40:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -808542930, now seen corresponding path program 1 times [2022-11-20 10:40:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:40:51,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275366633] [2022-11-20 10:40:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:40:51,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:40:51,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422647543] [2022-11-20 10:40:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:40:51,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:40:51,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:40:51,710 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:40:51,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 10:40:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:40:52,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-20 10:40:52,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:40:52,476 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 [2022-11-20 10:40:52,488 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 13 treesize of output 9 [2022-11-20 10:40:52,837 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 22 treesize of output 21 [2022-11-20 10:40:52,848 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 [2022-11-20 10:40:53,241 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1976 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1974 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1974)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1976)))) is different from true [2022-11-20 10:40:53,863 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 49 treesize of output 37 [2022-11-20 10:40:53,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 19 [2022-11-20 10:40:53,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:40:53,879 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 22 treesize of output 21 [2022-11-20 10:41:10,673 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1978 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1978)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-20 10:41:10,692 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1978 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_1978)))) is different from true [2022-11-20 10:41:10,727 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 20 treesize of output 19 [2022-11-20 10:41:19,430 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 18 refuted. 4 times theorem prover too weak. 27 trivial. 23 not checked. [2022-11-20 10:41:19,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:41:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275366633] [2022-11-20 10:41:20,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:41:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422647543] [2022-11-20 10:41:20,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422647543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:41:20,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:41:20,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-11-20 10:41:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318790757] [2022-11-20 10:41:20,261 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:41:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 10:41:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 10:41:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1000, Unknown=72, NotChecked=204, Total=1406 [2022-11-20 10:41:20,263 INFO L87 Difference]: Start difference. First operand 333 states and 449 transitions. Second operand has 32 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (20), 14 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 10:41:21,234 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1978 Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1978)) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1976 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_1974 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_1974)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1976))))) is different from true [2022-11-20 10:41:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:41:24,413 INFO L93 Difference]: Finished difference Result 476 states and 635 transitions. [2022-11-20 10:41:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:41:24,414 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (20), 14 states have call predecessors, (20), 13 states have call successors, (20) Word has length 135 [2022-11-20 10:41:24,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:41:24,417 INFO L225 Difference]: With dead ends: 476 [2022-11-20 10:41:24,417 INFO L226 Difference]: Without dead ends: 387 [2022-11-20 10:41:24,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 27.6s TimeCoverageRelationStatistics Valid=243, Invalid=1750, Unknown=93, NotChecked=364, Total=2450 [2022-11-20 10:41:24,419 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 136 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 3170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1492 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:41:24,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1420 Invalid, 3170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1631 Invalid, 0 Unknown, 1492 Unchecked, 3.0s Time] [2022-11-20 10:41:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-20 10:41:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 359. [2022-11-20 10:41:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 235 states have (on average 1.123404255319149) internal successors, (264), 245 states have internal predecessors, (264), 79 states have call successors, (79), 42 states have call predecessors, (79), 44 states have return successors, (145), 71 states have call predecessors, (145), 77 states have call successors, (145) [2022-11-20 10:41:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 488 transitions. [2022-11-20 10:41:24,472 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 488 transitions. Word has length 135 [2022-11-20 10:41:24,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:41:24,473 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 488 transitions. [2022-11-20 10:41:24,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 28 states have internal predecessors, (80), 14 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (20), 14 states have call predecessors, (20), 13 states have call successors, (20) [2022-11-20 10:41:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 488 transitions. [2022-11-20 10:41:24,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 10:41:24,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:41:24,475 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:41:24,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 10:41:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:41:24,686 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:41:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:41:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash 708411965, now seen corresponding path program 1 times [2022-11-20 10:41:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:41:24,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917372826] [2022-11-20 10:41:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:24,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:41:24,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:41:24,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514761548] [2022-11-20 10:41:24,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:41:24,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:41:24,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:41:24,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:41:24,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 10:41:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:41:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-20 10:41:25,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:41:25,440 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 [2022-11-20 10:41:25,927 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 [2022-11-20 10:41:26,029 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 [2022-11-20 10:41:30,246 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 45 treesize of output 32 [2022-11-20 10:41:30,399 INFO L321 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-11-20 10:41:30,399 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 [2022-11-20 10:41:30,869 WARN L859 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2097 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2097)))) is different from true [2022-11-20 10:41:37,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:41:37,458 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 27 treesize of output 27 [2022-11-20 10:41:37,484 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:41:37,484 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 11 treesize of output 11 [2022-11-20 10:41:52,265 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 24 treesize of output 12 [2022-11-20 10:41:52,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 18 treesize of output 10 [2022-11-20 10:41:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 66 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 10:41:52,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:41:53,035 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 42 treesize of output 30 [2022-11-20 10:41:53,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:41:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917372826] [2022-11-20 10:41:53,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:41:53,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514761548] [2022-11-20 10:41:53,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514761548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:41:53,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:41:53,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-20 10:41:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943505] [2022-11-20 10:41:53,197 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:41:53,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 10:41:53,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:41:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 10:41:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=593, Unknown=19, NotChecked=50, Total=756 [2022-11-20 10:41:53,198 INFO L87 Difference]: Start difference. First operand 359 states and 488 transitions. Second operand has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-20 10:42:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:03,784 INFO L93 Difference]: Finished difference Result 516 states and 693 transitions. [2022-11-20 10:42:03,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 10:42:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 130 [2022-11-20 10:42:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:03,789 INFO L225 Difference]: With dead ends: 516 [2022-11-20 10:42:03,789 INFO L226 Difference]: Without dead ends: 392 [2022-11-20 10:42:03,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 172 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=147, Invalid=1015, Unknown=32, NotChecked=66, Total=1260 [2022-11-20 10:42:03,794 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 127 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 2568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1590 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:03,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1047 Invalid, 2568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 917 Invalid, 0 Unknown, 1590 Unchecked, 1.8s Time] [2022-11-20 10:42:03,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-20 10:42:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 370. [2022-11-20 10:42:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 242 states have (on average 1.1198347107438016) internal successors, (271), 252 states have internal predecessors, (271), 81 states have call successors, (81), 43 states have call predecessors, (81), 46 states have return successors, (151), 74 states have call predecessors, (151), 79 states have call successors, (151) [2022-11-20 10:42:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 503 transitions. [2022-11-20 10:42:03,856 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 503 transitions. Word has length 130 [2022-11-20 10:42:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:03,857 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 503 transitions. [2022-11-20 10:42:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.217391304347826) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (19), 8 states have call predecessors, (19), 9 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2022-11-20 10:42:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 503 transitions. [2022-11-20 10:42:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 10:42:03,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:03,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:42:03,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:42:04,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:42:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:04,070 INFO L85 PathProgramCache]: Analyzing trace with hash 104561050, now seen corresponding path program 1 times [2022-11-20 10:42:04,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:04,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907295654] [2022-11-20 10:42:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:04,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:42:04,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129491735] [2022-11-20 10:42:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:04,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:42:04,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:04,144 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:42:04,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 10:42:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:04,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-20 10:42:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:04,890 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 21 treesize of output 9 [2022-11-20 10:42:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 10:42:05,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:42:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907295654] [2022-11-20 10:42:05,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:42:05,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129491735] [2022-11-20 10:42:05,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129491735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:42:05,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:42:05,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 10:42:05,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862368257] [2022-11-20 10:42:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:42:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 10:42:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 10:42:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-11-20 10:42:05,539 INFO L87 Difference]: Start difference. First operand 370 states and 503 transitions. Second operand has 19 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-20 10:42:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:42:07,036 INFO L93 Difference]: Finished difference Result 552 states and 737 transitions. [2022-11-20 10:42:07,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 10:42:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 141 [2022-11-20 10:42:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:42:07,039 INFO L225 Difference]: With dead ends: 552 [2022-11-20 10:42:07,039 INFO L226 Difference]: Without dead ends: 348 [2022-11-20 10:42:07,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-20 10:42:07,041 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 24 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:42:07,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2273 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 10:42:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-20 10:42:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 341. [2022-11-20 10:42:07,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 224 states have (on average 1.1116071428571428) internal successors, (249), 233 states have internal predecessors, (249), 72 states have call successors, (72), 39 states have call predecessors, (72), 44 states have return successors, (127), 68 states have call predecessors, (127), 70 states have call successors, (127) [2022-11-20 10:42:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 448 transitions. [2022-11-20 10:42:07,095 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 448 transitions. Word has length 141 [2022-11-20 10:42:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:42:07,096 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 448 transitions. [2022-11-20 10:42:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 7 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-20 10:42:07,096 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 448 transitions. [2022-11-20 10:42:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:42:07,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:42:07,098 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:42:07,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 10:42:07,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 10:42:07,309 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:42:07,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:42:07,309 INFO L85 PathProgramCache]: Analyzing trace with hash -212590342, now seen corresponding path program 1 times [2022-11-20 10:42:07,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:42:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385054542] [2022-11-20 10:42:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:07,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:42:07,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:42:07,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396109417] [2022-11-20 10:42:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:42:07,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:42:07,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:42:07,381 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:42:07,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 10:42:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:42:08,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-20 10:42:08,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:42:10,621 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2309 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2312 (Array Int Int)) (v_ArrVal_2308 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2309))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2312) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2308))))) is different from true [2022-11-20 10:42:10,669 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2309 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2312 (Array Int Int)) (v_ArrVal_2308 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2309))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2308)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2312) |c_#memory_int|))) is different from true [2022-11-20 10:42:10,765 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 29 treesize of output 28 [2022-11-20 10:42:10,803 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 10:42:10,803 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 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-20 10:42:10,812 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 29 treesize of output 28 [2022-11-20 10:42:11,447 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2313 (Array Int Int)) (v_ArrVal_2315 Int) (v_ArrVal_2317 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2317))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2313) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2315))))) is different from true [2022-11-20 10:42:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 17 not checked. [2022-11-20 10:42:49,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:42:50,354 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| Int) (v_ArrVal_2337 (Array Int Int)) (v_ArrVal_2335 Int) (v_ArrVal_2336 Int)) (let ((.cse0 (+ 32 c_aws_array_list_length_~list.offset))) (or (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139|) 0 v_ArrVal_2335)) c_aws_array_list_length_~list.base) .cse0) 0)) (not (= (mod (select (select (store |c_#memory_int| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| v_ArrVal_2337) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_aws_mul_u64_checked_~r#1.base_139|) 0 v_ArrVal_2336)) c_aws_array_list_length_~list.base) .cse0) 0))))) is different from false [2022-11-20 10:42:50,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:42:50,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385054542] [2022-11-20 10:42:50,357 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:42:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396109417] [2022-11-20 10:42:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396109417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:42:50,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:42:50,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-20 10:42:50,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655414213] [2022-11-20 10:42:50,358 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:42:50,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 10:42:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:42:50,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 10:42:50,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1125, Unknown=28, NotChecked=284, Total=1560 [2022-11-20 10:42:50,359 INFO L87 Difference]: Start difference. First operand 341 states and 448 transitions. Second operand has 36 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 12 states have call successors, (18), 7 states have call predecessors, (18), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-20 10:42:51,029 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2309 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2312 (Array Int Int)) (v_ArrVal_2308 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2309))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2312) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2308))))) (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2313 (Array Int Int)) (v_ArrVal_2315 Int) (v_ArrVal_2317 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2317))) (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_2313) |c_#memory_int|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2315)))))) is different from true [2022-11-20 10:43:38,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:38,065 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2022-11-20 10:43:38,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 10:43:38,066 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 12 states have call successors, (18), 7 states have call predecessors, (18), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) Word has length 118 [2022-11-20 10:43:38,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:38,068 INFO L225 Difference]: With dead ends: 474 [2022-11-20 10:43:38,069 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 10:43:38,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 83 SyntacticMatches, 9 SemanticMatches, 55 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 84.9s TimeCoverageRelationStatistics Valid=274, Invalid=2361, Unknown=37, NotChecked=520, Total=3192 [2022-11-20 10:43:38,071 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 135 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1448 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:38,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1016 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1149 Invalid, 0 Unknown, 1448 Unchecked, 2.5s Time] [2022-11-20 10:43:38,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 10:43:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2022-11-20 10:43:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 238 states have (on average 1.1092436974789917) internal successors, (264), 248 states have internal predecessors, (264), 77 states have call successors, (77), 43 states have call predecessors, (77), 47 states have return successors, (138), 71 states have call predecessors, (138), 75 states have call successors, (138) [2022-11-20 10:43:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 479 transitions. [2022-11-20 10:43:38,123 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 479 transitions. Word has length 118 [2022-11-20 10:43:38,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:38,124 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 479 transitions. [2022-11-20 10:43:38,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 2.3125) internal successors, (74), 31 states have internal predecessors, (74), 12 states have call successors, (18), 7 states have call predecessors, (18), 9 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-20 10:43:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 479 transitions. [2022-11-20 10:43:38,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 10:43:38,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:38,127 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:38,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-20 10:43:38,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 10:43:38,336 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:43:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1450594124, now seen corresponding path program 1 times [2022-11-20 10:43:38,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:43:38,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549892581] [2022-11-20 10:43:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:43:38,392 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:43:38,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [170156106] [2022-11-20 10:43:38,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:38,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:43:38,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:43:38,394 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:43:38,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 10:43:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:39,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-20 10:43:39,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:39,375 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 21 treesize of output 20 [2022-11-20 10:43:39,382 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 [2022-11-20 10:43:39,699 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2435 Int) (v_ArrVal_2437 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2437)) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2435))))) is different from true [2022-11-20 10:43:40,628 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 41 treesize of output 33 [2022-11-20 10:43:40,632 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 24 treesize of output 16 [2022-11-20 10:43:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 10:43:40,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:43:40,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:43:40,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549892581] [2022-11-20 10:43:40,693 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:43:40,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170156106] [2022-11-20 10:43:40,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170156106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:43:40,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:43:40,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-20 10:43:40,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140560649] [2022-11-20 10:43:40,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:43:40,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 10:43:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:43:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 10:43:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=307, Unknown=25, NotChecked=36, Total=420 [2022-11-20 10:43:40,695 INFO L87 Difference]: Start difference. First operand 363 states and 479 transitions. Second operand has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:43:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:43:42,470 INFO L93 Difference]: Finished difference Result 511 states and 669 transitions. [2022-11-20 10:43:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 10:43:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) Word has length 124 [2022-11-20 10:43:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:43:42,473 INFO L225 Difference]: With dead ends: 511 [2022-11-20 10:43:42,473 INFO L226 Difference]: Without dead ends: 363 [2022-11-20 10:43:42,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=101, Invalid=631, Unknown=28, NotChecked=52, Total=812 [2022-11-20 10:43:42,475 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 80 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:43:42,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 699 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 660 Invalid, 0 Unknown, 671 Unchecked, 1.1s Time] [2022-11-20 10:43:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-11-20 10:43:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2022-11-20 10:43:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 238 states have (on average 1.1092436974789917) internal successors, (264), 248 states have internal predecessors, (264), 77 states have call successors, (77), 43 states have call predecessors, (77), 47 states have return successors, (137), 71 states have call predecessors, (137), 75 states have call successors, (137) [2022-11-20 10:43:42,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 478 transitions. [2022-11-20 10:43:42,527 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 478 transitions. Word has length 124 [2022-11-20 10:43:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:43:42,527 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 478 transitions. [2022-11-20 10:43:42,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 18 states have internal predecessors, (67), 8 states have call successors, (18), 4 states have call predecessors, (18), 7 states have return successors, (16), 7 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 10:43:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 478 transitions. [2022-11-20 10:43:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 10:43:42,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:43:42,530 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:43:42,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 10:43:42,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 10:43:42,740 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:43:42,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:43:42,740 INFO L85 PathProgramCache]: Analyzing trace with hash -609950740, now seen corresponding path program 1 times [2022-11-20 10:43:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:43:42,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122610491] [2022-11-20 10:43:42,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:42,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:43:42,795 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:43:42,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [561282786] [2022-11-20 10:43:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:43:42,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:43:42,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:43:42,797 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:43:42,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 10:43:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:43:43,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-20 10:43:43,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:43:43,519 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 [2022-11-20 10:43:44,002 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 [2022-11-20 10:43:44,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 10:43:44,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-20 10:43:44,432 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 34 treesize of output 27 [2022-11-20 10:43:44,531 INFO L321 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-11-20 10:43:44,531 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 1 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 10:43:44,885 WARN L859 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2556 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2556)))) is different from true [2022-11-20 10:43:45,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:43:45,424 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 28 treesize of output 28 [2022-11-20 10:43:45,458 INFO L321 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-11-20 10:43:45,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-20 10:44:01,867 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 16 treesize of output 8 [2022-11-20 10:44:01,876 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 18 treesize of output 10 [2022-11-20 10:44:01,884 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 7 treesize of output 3 [2022-11-20 10:44:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 66 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 10:44:01,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:02,532 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 41 treesize of output 35 [2022-11-20 10:44:02,537 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 47 treesize of output 35 [2022-11-20 10:44:02,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122610491] [2022-11-20 10:44:02,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:44:02,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561282786] [2022-11-20 10:44:02,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561282786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:02,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:44:02,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-20 10:44:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383298921] [2022-11-20 10:44:02,662 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 10:44:02,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 10:44:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=646, Unknown=11, NotChecked=52, Total=812 [2022-11-20 10:44:02,663 INFO L87 Difference]: Start difference. First operand 363 states and 478 transitions. Second operand has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 19 states have internal predecessors, (77), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-20 10:44:11,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:44:11,192 INFO L93 Difference]: Finished difference Result 505 states and 661 transitions. [2022-11-20 10:44:11,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 10:44:11,193 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 19 states have internal predecessors, (77), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 135 [2022-11-20 10:44:11,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:44:11,196 INFO L225 Difference]: With dead ends: 505 [2022-11-20 10:44:11,196 INFO L226 Difference]: Without dead ends: 367 [2022-11-20 10:44:11,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 174 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=170, Invalid=1217, Unknown=23, NotChecked=72, Total=1482 [2022-11-20 10:44:11,199 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 148 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1041 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 10:44:11,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 929 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1088 Invalid, 0 Unknown, 1041 Unchecked, 1.9s Time] [2022-11-20 10:44:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-20 10:44:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 334. [2022-11-20 10:44:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 220 states have (on average 1.1090909090909091) internal successors, (244), 229 states have internal predecessors, (244), 70 states have call successors, (70), 39 states have call predecessors, (70), 43 states have return successors, (122), 65 states have call predecessors, (122), 68 states have call successors, (122) [2022-11-20 10:44:11,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 436 transitions. [2022-11-20 10:44:11,251 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 436 transitions. Word has length 135 [2022-11-20 10:44:11,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:44:11,251 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 436 transitions. [2022-11-20 10:44:11,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.2083333333333335) internal successors, (77), 19 states have internal predecessors, (77), 9 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-20 10:44:11,252 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 436 transitions. [2022-11-20 10:44:11,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-20 10:44:11,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:44:11,254 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:44:11,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 10:44:11,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 10:44:11,464 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:44:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:44:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 820838492, now seen corresponding path program 1 times [2022-11-20 10:44:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:44:11,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690682687] [2022-11-20 10:44:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:11,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:44:11,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:44:11,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291948145] [2022-11-20 10:44:11,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:44:11,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:44:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:44:11,524 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:44:11,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 10:44:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:44:12,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 115 conjunts are in the unsatisfiable core [2022-11-20 10:44:12,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:44:12,264 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 [2022-11-20 10:44:12,627 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 13 treesize of output 9 [2022-11-20 10:44:12,695 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 [2022-11-20 10:44:12,855 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 [2022-11-20 10:44:12,999 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 21 treesize of output 20 [2022-11-20 10:44:13,121 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 10:44:13,121 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 [2022-11-20 10:44:13,531 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2697 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2697) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-20 10:44:14,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:44:14,345 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 16 treesize of output 18 [2022-11-20 10:44:14,370 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 10:44:14,370 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 11 treesize of output 11 [2022-11-20 10:44:15,096 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 7 treesize of output 3 [2022-11-20 10:44:31,852 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2698 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2698)))) is different from true [2022-11-20 10:44:40,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 10:44:40,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 10:44:40,635 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2022-11-20 10:44:40,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 1 [2022-11-20 10:44:40,639 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 3 not checked. [2022-11-20 10:44:40,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:44:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:44:43,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690682687] [2022-11-20 10:44:43,316 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 10:44:43,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291948145] [2022-11-20 10:44:43,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291948145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:44:43,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:44:43,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-11-20 10:44:43,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31227010] [2022-11-20 10:44:43,317 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 10:44:43,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 10:44:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:44:43,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 10:44:43,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1078, Unknown=79, NotChecked=138, Total=1406 [2022-11-20 10:44:43,319 INFO L87 Difference]: Start difference. First operand 334 states and 436 transitions. Second operand has 37 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 31 states have internal predecessors, (87), 12 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-20 10:45:07,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:45:07,970 INFO L93 Difference]: Finished difference Result 474 states and 590 transitions. [2022-11-20 10:45:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 10:45:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 31 states have internal predecessors, (87), 12 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) Word has length 129 [2022-11-20 10:45:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:45:07,974 INFO L225 Difference]: With dead ends: 474 [2022-11-20 10:45:07,974 INFO L226 Difference]: Without dead ends: 354 [2022-11-20 10:45:07,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=317, Invalid=3198, Unknown=153, NotChecked=238, Total=3906 [2022-11-20 10:45:07,977 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 227 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1944 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:45:07,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1244 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 718 Invalid, 0 Unknown, 1944 Unchecked, 1.5s Time] [2022-11-20 10:45:07,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-20 10:45:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 307. [2022-11-20 10:45:08,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 206 states have (on average 1.1067961165048543) internal successors, (228), 213 states have internal predecessors, (228), 61 states have call successors, (61), 35 states have call predecessors, (61), 39 states have return successors, (104), 58 states have call predecessors, (104), 59 states have call successors, (104) [2022-11-20 10:45:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 393 transitions. [2022-11-20 10:45:08,029 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 393 transitions. Word has length 129 [2022-11-20 10:45:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:45:08,030 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 393 transitions. [2022-11-20 10:45:08,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.5588235294117645) internal successors, (87), 31 states have internal predecessors, (87), 12 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (19), 12 states have call predecessors, (19), 12 states have call successors, (19) [2022-11-20 10:45:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 393 transitions. [2022-11-20 10:45:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 10:45:08,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:45:08,032 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 10:45:08,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-11-20 10:45:08,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 10:45:08,243 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:45:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:45:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash -568335826, now seen corresponding path program 2 times [2022-11-20 10:45:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:45:08,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809056079] [2022-11-20 10:45:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:45:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:45:08,311 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 10:45:08,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1326511085] [2022-11-20 10:45:08,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:45:08,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:45:08,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:45:08,313 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:45:08,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9c4bbe0-9392-4263-ad2e-a2badb0f7a4a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 10:45:09,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:45:09,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:45:09,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 2488 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-20 10:45:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates...