./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro --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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:03:13,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:03:13,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:03:13,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:03:13,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:03:13,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:03:13,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:03:13,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:03:13,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:03:13,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:03:13,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:03:13,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:03:13,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:03:13,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:03:13,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:03:13,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:03:13,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:03:13,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:03:13,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:03:13,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:03:13,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:03:13,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:03:13,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:03:13,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:03:13,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:03:13,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:03:13,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:03:13,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:03:13,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:03:13,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:03:13,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:03:13,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:03:13,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:03:13,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:03:13,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:03:13,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:03:13,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:03:13,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:03:13,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:03:13,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:03:13,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:03:13,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:03:13,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:03:13,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:03:13,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:03:13,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:03:13,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:03:13,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:03:13,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:03:13,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:03:13,519 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:03:13,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:03:13,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:03:13,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:03:13,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:03:13,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:03:13,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:03:13,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:03:13,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:03:13,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:03:13,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:03:13,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:03:13,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:03:13,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:13,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:03:13,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:03:13,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:03:13,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:03:13,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:03:13,525 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:03:13,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:03:13,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:03:13,526 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_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2022-11-18 20:03:13,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:03:13,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:03:13,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:03:13,850 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:03:13,851 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:03:13,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-18 20:03:13,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/data/8542c0e5c/0e59f18a8975454584c40dd9affb3a35/FLAG3f966e3f4 [2022-11-18 20:03:14,823 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:03:14,824 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-11-18 20:03:14,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/data/8542c0e5c/0e59f18a8975454584c40dd9affb3a35/FLAG3f966e3f4 [2022-11-18 20:03:15,333 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/data/8542c0e5c/0e59f18a8975454584c40dd9affb3a35 [2022-11-18 20:03:15,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:03:15,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:03:15,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:15,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:03:15,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:03:15,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:15" (1/1) ... [2022-11-18 20:03:15,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e88509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:15, skipping insertion in model container [2022-11-18 20:03:15,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:03:15" (1/1) ... [2022-11-18 20:03:15,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:03:15,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:03:15,766 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-18 20:03:15,774 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-18 20:03:16,859 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,860 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,860 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,862 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,863 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,880 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,881 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,884 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:16,885 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,364 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:03:17,368 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:03:17,369 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:03:17,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:03:17,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:03:17,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:03:17,374 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:03:17,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:03:17,375 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:03:17,376 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:03:17,552 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:03:17,656 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,657 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:17,792 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:03:17,807 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4496,4509] [2022-11-18 20:03:17,807 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i[4556,4569] [2022-11-18 20:03:17,841 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,841 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,842 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,842 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,843 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,850 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,850 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,851 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:17,852 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:18,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:03:18,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:03:18,006 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:03:18,007 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:03:18,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:03:18,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:03:18,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:03:18,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:03:18,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:03:18,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:03:18,044 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:03:18,146 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:18,148 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:03:18,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:03:18,469 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:03:18,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18 WrapperNode [2022-11-18 20:03:18,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:03:18,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:18,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:03:18,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:03:18,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,700 INFO L138 Inliner]: procedures = 691, calls = 2623, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 936 [2022-11-18 20:03:18,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:03:18,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:03:18,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:03:18,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:03:18,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:03:18,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:03:18,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:03:18,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:03:18,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (1/1) ... [2022-11-18 20:03:18,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:03:18,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:18,828 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:03:18,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:03:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-18 20:03:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-18 20:03:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:03:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 20:03:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 20:03:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-18 20:03:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-18 20:03:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:03:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 20:03:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 20:03:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:03:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:03:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:03:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:03:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:03:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-18 20:03:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-18 20:03:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:03:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:03:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 20:03:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 20:03:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-18 20:03:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-18 20:03:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-18 20:03:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-18 20:03:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 20:03:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 20:03:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:03:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:03:18,885 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-18 20:03:18,886 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-18 20:03:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-18 20:03:18,886 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-18 20:03:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:03:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:03:18,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:03:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 20:03:18,887 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 20:03:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 20:03:18,887 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 20:03:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:03:18,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:03:19,263 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:03:19,266 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:03:20,766 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:03:20,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:03:20,777 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-18 20:03:20,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:20 BoogieIcfgContainer [2022-11-18 20:03:20,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:03:20,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:03:20,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:03:20,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:03:20,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:03:15" (1/3) ... [2022-11-18 20:03:20,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e56ed4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:20, skipping insertion in model container [2022-11-18 20:03:20,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:03:18" (2/3) ... [2022-11-18 20:03:20,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e56ed4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:03:20, skipping insertion in model container [2022-11-18 20:03:20,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:03:20" (3/3) ... [2022-11-18 20:03:20,791 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2022-11-18 20:03:20,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:03:20,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:03:20,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:03:20,910 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;@5af31ec4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:03:20,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:03:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-18 20:03:20,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 20:03:20,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:20,933 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:20,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:20,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:20,941 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2022-11-18 20:03:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:20,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602479051] [2022-11-18 20:03:20,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:20,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:03:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:03:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:03:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:03:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:03:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:21,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602479051] [2022-11-18 20:03:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602479051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:21,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:03:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972561139] [2022-11-18 20:03:21,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:03:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:03:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:21,954 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:03:22,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:22,531 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2022-11-18 20:03:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:03:22,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2022-11-18 20:03:22,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:22,555 INFO L225 Difference]: With dead ends: 376 [2022-11-18 20:03:22,555 INFO L226 Difference]: Without dead ends: 189 [2022-11-18 20:03:22,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:03:22,574 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 82 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:22,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 226 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:03:22,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-18 20:03:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-11-18 20:03:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-18 20:03:22,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2022-11-18 20:03:22,644 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2022-11-18 20:03:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:22,644 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2022-11-18 20:03:22,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:03:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2022-11-18 20:03:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-18 20:03:22,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:22,649 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-11-18 20:03:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:03:22,649 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:22,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:22,650 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2022-11-18 20:03:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041458734] [2022-11-18 20:03:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:22,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:03:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:03:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:03:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:03:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:03:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 20:03:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:03:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:23,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041458734] [2022-11-18 20:03:23,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041458734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:23,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306597751] [2022-11-18 20:03:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:23,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:23,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:23,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:03:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:24,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:03:24,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:03:24,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:24,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306597751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:24,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:24,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-18 20:03:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702383779] [2022-11-18 20:03:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:24,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:03:24,310 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:03:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:24,391 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2022-11-18 20:03:24,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:03:24,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-11-18 20:03:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:24,402 INFO L225 Difference]: With dead ends: 248 [2022-11-18 20:03:24,402 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 20:03:24,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:03:24,405 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:24,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 20:03:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-18 20:03:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-18 20:03:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-11-18 20:03:24,447 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2022-11-18 20:03:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:24,449 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-11-18 20:03:24,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:03:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-11-18 20:03:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-18 20:03:24,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:24,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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] [2022-11-18 20:03:24,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:03:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:24,663 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2022-11-18 20:03:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:24,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839208970] [2022-11-18 20:03:24,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:25,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:03:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:03:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:03:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:03:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:03:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:03:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:25,446 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:03:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:25,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839208970] [2022-11-18 20:03:25,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839208970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:25,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785573587] [2022-11-18 20:03:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:25,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:25,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:25,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:25,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:03:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:26,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:03:26,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:26,204 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-18 20:03:26,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:26,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785573587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:26,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:26,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-11-18 20:03:26,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345797588] [2022-11-18 20:03:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:26,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:03:26,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:03:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:03:26,208 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:03:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:26,469 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2022-11-18 20:03:26,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:03:26,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2022-11-18 20:03:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:26,472 INFO L225 Difference]: With dead ends: 249 [2022-11-18 20:03:26,472 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 20:03:26,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:03:26,474 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:26,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1094 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 20:03:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-18 20:03:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2022-11-18 20:03:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2022-11-18 20:03:26,513 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2022-11-18 20:03:26,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:26,514 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2022-11-18 20:03:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:03:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2022-11-18 20:03:26,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 20:03:26,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:26,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2022-11-18 20:03:26,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:26,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:26,732 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2022-11-18 20:03:26,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:26,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841077603] [2022-11-18 20:03:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:26,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:03:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:03:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:03:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:03:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:03:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:03:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:03:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841077603] [2022-11-18 20:03:27,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841077603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:27,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738286877] [2022-11-18 20:03:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:27,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:27,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:27,459 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:27,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:03:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:28,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:03:28,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:03:28,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:28,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738286877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:28,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:28,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-18 20:03:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927760507] [2022-11-18 20:03:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:28,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:28,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:03:28,178 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:03:28,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:28,421 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-11-18 20:03:28,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:03:28,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2022-11-18 20:03:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:28,424 INFO L225 Difference]: With dead ends: 338 [2022-11-18 20:03:28,424 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 20:03:28,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:03:28,425 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:28,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 479 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:03:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 20:03:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-18 20:03:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-11-18 20:03:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-11-18 20:03:28,441 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2022-11-18 20:03:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:28,442 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-11-18 20:03:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:03:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-11-18 20:03:28,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 20:03:28,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:28,444 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:28,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:28,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:28,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:28,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2022-11-18 20:03:28,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:28,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272000485] [2022-11-18 20:03:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:28,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:03:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:03:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:03:29,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:29,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272000485] [2022-11-18 20:03:29,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272000485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:29,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953224366] [2022-11-18 20:03:29,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:29,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:29,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:29,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:03:29,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:03:29,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:29,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:03:29,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:30,064 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 20:03:30,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953224366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:30,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:30,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-18 20:03:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737987117] [2022-11-18 20:03:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:03:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:03:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:03:30,069 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:03:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:30,173 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2022-11-18 20:03:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:03:30,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2022-11-18 20:03:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:30,177 INFO L225 Difference]: With dead ends: 188 [2022-11-18 20:03:30,177 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 20:03:30,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:03:30,179 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 23 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:30,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1482 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:03:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 20:03:30,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-11-18 20:03:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-11-18 20:03:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2022-11-18 20:03:30,208 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2022-11-18 20:03:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:30,208 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2022-11-18 20:03:30,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:03:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2022-11-18 20:03:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 20:03:30,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:30,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:30,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:30,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:30,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2022-11-18 20:03:30,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:30,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075510858] [2022-11-18 20:03:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:30,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:03:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:03:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-18 20:03:31,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:31,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075510858] [2022-11-18 20:03:31,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075510858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:31,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351738148] [2022-11-18 20:03:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:31,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:31,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:31,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:31,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:03:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:31,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:31,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:03:31,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:31,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351738148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:31,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:31,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-18 20:03:31,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742935479] [2022-11-18 20:03:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:03:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:03:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:03:31,847 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:03:32,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:32,202 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2022-11-18 20:03:32,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:03:32,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2022-11-18 20:03:32,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:32,204 INFO L225 Difference]: With dead ends: 342 [2022-11-18 20:03:32,204 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 20:03:32,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:03:32,205 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:32,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:03:32,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 20:03:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-18 20:03:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-18 20:03:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-11-18 20:03:32,233 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2022-11-18 20:03:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:32,233 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-11-18 20:03:32,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:03:32,234 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-11-18 20:03:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-18 20:03:32,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:32,236 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:03:32,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:32,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:03:32,451 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:32,452 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2022-11-18 20:03:32,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:32,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700104048] [2022-11-18 20:03:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:32,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:03:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:03:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:33,156 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:03:33,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:33,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700104048] [2022-11-18 20:03:33,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700104048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:33,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:03:33,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:03:33,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271500673] [2022-11-18 20:03:33,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:33,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:03:33,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:33,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:03:33,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:33,159 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:03:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:33,930 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2022-11-18 20:03:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:03:33,931 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-18 20:03:33,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:33,933 INFO L225 Difference]: With dead ends: 286 [2022-11-18 20:03:33,933 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 20:03:33,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:03:33,934 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 170 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:33,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 347 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:03:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 20:03:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-11-18 20:03:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-18 20:03:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-11-18 20:03:33,955 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2022-11-18 20:03:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:33,956 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-11-18 20:03:33,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:03:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-11-18 20:03:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 20:03:33,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:33,958 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:03:33,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:03:33,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:33,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2022-11-18 20:03:33,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:33,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319531433] [2022-11-18 20:03:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:33,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:03:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:03:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:03:34,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:34,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319531433] [2022-11-18 20:03:34,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319531433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:34,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336427321] [2022-11-18 20:03:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:34,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:34,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:34,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:34,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:03:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:35,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:03:35,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:03:35,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:35,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336427321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:35,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:35,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-18 20:03:35,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520592048] [2022-11-18 20:03:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:35,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:03:35,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:03:35,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:03:35,725 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:03:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:35,985 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2022-11-18 20:03:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:35,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-11-18 20:03:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:35,988 INFO L225 Difference]: With dead ends: 370 [2022-11-18 20:03:35,988 INFO L226 Difference]: Without dead ends: 201 [2022-11-18 20:03:35,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:03:35,989 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:35,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-18 20:03:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-18 20:03:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-11-18 20:03:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-18 20:03:36,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2022-11-18 20:03:36,006 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2022-11-18 20:03:36,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:36,007 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2022-11-18 20:03:36,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-18 20:03:36,007 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2022-11-18 20:03:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 20:03:36,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:36,009 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:03:36,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:36,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-18 20:03:36,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:36,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:36,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2022-11-18 20:03:36,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:36,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703300537] [2022-11-18 20:03:36,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:03:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:03:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-18 20:03:37,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703300537] [2022-11-18 20:03:37,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703300537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:37,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242588916] [2022-11-18 20:03:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:37,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:37,085 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:37,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:03:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:37,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 20:03:37,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:37,863 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 [2022-11-18 20:03:38,217 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:03:38,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:38,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242588916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:38,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:38,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2022-11-18 20:03:38,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218856525] [2022-11-18 20:03:38,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:38,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:03:38,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:38,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:03:38,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:03:38,220 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 20:03:38,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:38,314 INFO L93 Difference]: Finished difference Result 385 states and 490 transitions. [2022-11-18 20:03:38,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:03:38,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2022-11-18 20:03:38,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:38,317 INFO L225 Difference]: With dead ends: 385 [2022-11-18 20:03:38,317 INFO L226 Difference]: Without dead ends: 207 [2022-11-18 20:03:38,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:03:38,320 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 34 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:38,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1011 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2022-11-18 20:03:38,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-18 20:03:38,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-18 20:03:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 142 states have internal predecessors, (163), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-11-18 20:03:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2022-11-18 20:03:38,340 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 118 [2022-11-18 20:03:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:38,340 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2022-11-18 20:03:38,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 20:03:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2022-11-18 20:03:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 20:03:38,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:38,345 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:38,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:38,560 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1136839317, now seen corresponding path program 1 times [2022-11-18 20:03:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353454720] [2022-11-18 20:03:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:03:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:03:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:03:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:03:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:03:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:03:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:38,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:03:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:03:39,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353454720] [2022-11-18 20:03:39,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353454720] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:39,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284527067] [2022-11-18 20:03:39,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:39,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:39,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:39,013 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:39,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:03:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:39,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:39,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 20:03:39,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:39,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284527067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:39,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:39,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:03:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543384680] [2022-11-18 20:03:39,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:39,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:03:39,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:03:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:39,607 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:39,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:39,643 INFO L93 Difference]: Finished difference Result 394 states and 507 transitions. [2022-11-18 20:03:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:39,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-11-18 20:03:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:39,645 INFO L225 Difference]: With dead ends: 394 [2022-11-18 20:03:39,645 INFO L226 Difference]: Without dead ends: 216 [2022-11-18 20:03:39,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:39,647 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 20 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:39,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-18 20:03:39,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2022-11-18 20:03:39,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 134 states have internal predecessors, (154), 48 states have call successors, (48), 17 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-18 20:03:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2022-11-18 20:03:39,662 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 118 [2022-11-18 20:03:39,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:39,663 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2022-11-18 20:03:39,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2022-11-18 20:03:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 20:03:39,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:39,665 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:39,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:39,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:39,875 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:39,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:39,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2078172463, now seen corresponding path program 2 times [2022-11-18 20:03:39,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:39,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006613779] [2022-11-18 20:03:39,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:39,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:03:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:03:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:03:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:03:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:03:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:03:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:03:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:03:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-18 20:03:40,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006613779] [2022-11-18 20:03:40,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006613779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:40,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736465661] [2022-11-18 20:03:40,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:03:40,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:40,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:40,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:40,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:03:41,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:03:41,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:03:41,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 20:03:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:41,518 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 [2022-11-18 20:03:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:03:42,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:42,871 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 32 treesize of output 26 [2022-11-18 20:03:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:03:43,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736465661] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:43,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:43,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 11] total 26 [2022-11-18 20:03:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430258621] [2022-11-18 20:03:43,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:43,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:03:43,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:43,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:03:43,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:03:43,030 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 20:03:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:46,201 INFO L93 Difference]: Finished difference Result 506 states and 658 transitions. [2022-11-18 20:03:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:03:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 122 [2022-11-18 20:03:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:46,211 INFO L225 Difference]: With dead ends: 506 [2022-11-18 20:03:46,211 INFO L226 Difference]: Without dead ends: 336 [2022-11-18 20:03:46,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 240 SyntacticMatches, 12 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:03:46,216 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 209 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 3205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 367 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:46,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1466 Invalid, 3205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2648 Invalid, 0 Unknown, 367 Unchecked, 2.8s Time] [2022-11-18 20:03:46,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-18 20:03:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 242. [2022-11-18 20:03:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 162 states have (on average 1.154320987654321) internal successors, (187), 165 states have internal predecessors, (187), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-18 20:03:46,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 309 transitions. [2022-11-18 20:03:46,246 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 309 transitions. Word has length 122 [2022-11-18 20:03:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:46,247 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 309 transitions. [2022-11-18 20:03:46,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 6.041666666666667) internal successors, (145), 22 states have internal predecessors, (145), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 20:03:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 309 transitions. [2022-11-18 20:03:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:03:46,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:46,250 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:46,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 20:03:46,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:46,459 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:46,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:46,459 INFO L85 PathProgramCache]: Analyzing trace with hash 407362865, now seen corresponding path program 1 times [2022-11-18 20:03:46,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:46,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625814672] [2022-11-18 20:03:46,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:46,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:03:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:03:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:03:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:03:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:03:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:03:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-18 20:03:46,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:46,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625814672] [2022-11-18 20:03:46,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625814672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:46,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565662341] [2022-11-18 20:03:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:46,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:46,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:46,906 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:03:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:47,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:47,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:03:47,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:47,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565662341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:47,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:47,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:03:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113799265] [2022-11-18 20:03:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:47,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:03:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:03:47,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:47,519 INFO L87 Difference]: Start difference. First operand 242 states and 309 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:47,559 INFO L93 Difference]: Finished difference Result 486 states and 625 transitions. [2022-11-18 20:03:47,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-18 20:03:47,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:47,561 INFO L225 Difference]: With dead ends: 486 [2022-11-18 20:03:47,562 INFO L226 Difference]: Without dead ends: 258 [2022-11-18 20:03:47,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:47,563 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 642 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 [2022-11-18 20:03:47,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-18 20:03:47,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2022-11-18 20:03:47,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 169 states have internal predecessors, (191), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-18 20:03:47,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 313 transitions. [2022-11-18 20:03:47,586 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 313 transitions. Word has length 129 [2022-11-18 20:03:47,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:47,586 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 313 transitions. [2022-11-18 20:03:47,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 313 transitions. [2022-11-18 20:03:47,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:03:47,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:47,589 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:47,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:47,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1237588619, now seen corresponding path program 1 times [2022-11-18 20:03:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352484995] [2022-11-18 20:03:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:03:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:03:48,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:03:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:03:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:03:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:03:48,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-18 20:03:48,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:48,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352484995] [2022-11-18 20:03:48,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352484995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:48,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493118642] [2022-11-18 20:03:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:48,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:48,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:48,226 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:48,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:03:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:48,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:03:48,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-18 20:03:48,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:03:48,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493118642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:03:48,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:03:48,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:03:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883549906] [2022-11-18 20:03:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:03:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:03:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:03:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:03:48,860 INFO L87 Difference]: Start difference. First operand 246 states and 313 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:48,904 INFO L93 Difference]: Finished difference Result 500 states and 641 transitions. [2022-11-18 20:03:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:03:48,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-11-18 20:03:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:48,907 INFO L225 Difference]: With dead ends: 500 [2022-11-18 20:03:48,907 INFO L226 Difference]: Without dead ends: 268 [2022-11-18 20:03:48,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:03:48,909 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 26 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:48,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 657 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:03:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-18 20:03:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 244. [2022-11-18 20:03:48,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 164 states have (on average 1.1341463414634145) internal successors, (186), 167 states have internal predecessors, (186), 58 states have call successors, (58), 20 states have call predecessors, (58), 21 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2022-11-18 20:03:48,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 308 transitions. [2022-11-18 20:03:48,931 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 308 transitions. Word has length 129 [2022-11-18 20:03:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:48,931 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 308 transitions. [2022-11-18 20:03:48,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:03:48,931 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 308 transitions. [2022-11-18 20:03:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-18 20:03:48,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:48,933 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:48,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:49,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 20:03:49,143 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 363482487, now seen corresponding path program 1 times [2022-11-18 20:03:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:49,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771747682] [2022-11-18 20:03:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:03:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:03:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:03:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:03:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:03:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:03:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:49,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:03:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:03:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 20:03:50,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:50,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771747682] [2022-11-18 20:03:50,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771747682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:50,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855527989] [2022-11-18 20:03:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:50,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:50,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:50,036 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:50,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:03:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:50,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 20:03:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:50,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:03:50,847 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 [2022-11-18 20:03:51,943 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 [2022-11-18 20:03:51,946 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 [2022-11-18 20:03:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 20:03:51,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:03:52,523 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 26 treesize of output 22 [2022-11-18 20:03:52,531 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 7 treesize of output 5 [2022-11-18 20:03:52,546 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 32 treesize of output 26 [2022-11-18 20:03:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 20:03:52,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855527989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:03:52,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:03:52,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 12] total 31 [2022-11-18 20:03:52,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047249334] [2022-11-18 20:03:52,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:03:52,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:03:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:03:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:03:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:03:52,744 INFO L87 Difference]: Start difference. First operand 244 states and 308 transitions. Second operand has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) [2022-11-18 20:03:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:58,696 INFO L93 Difference]: Finished difference Result 746 states and 963 transitions. [2022-11-18 20:03:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:03:58,697 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) Word has length 129 [2022-11-18 20:03:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:58,700 INFO L225 Difference]: With dead ends: 746 [2022-11-18 20:03:58,701 INFO L226 Difference]: Without dead ends: 573 [2022-11-18 20:03:58,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 264 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=351, Invalid=2841, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 20:03:58,703 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 698 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 4538 mSolverCounterSat, 535 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 6373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 535 IncrementalHoareTripleChecker+Valid, 4538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1300 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:58,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1746 Invalid, 6373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [535 Valid, 4538 Invalid, 0 Unknown, 1300 Unchecked, 4.7s Time] [2022-11-18 20:03:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-18 20:03:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 460. [2022-11-18 20:03:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 309 states have (on average 1.110032362459547) internal successors, (343), 316 states have internal predecessors, (343), 103 states have call successors, (103), 42 states have call predecessors, (103), 47 states have return successors, (128), 101 states have call predecessors, (128), 101 states have call successors, (128) [2022-11-18 20:03:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 574 transitions. [2022-11-18 20:03:58,750 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 574 transitions. Word has length 129 [2022-11-18 20:03:58,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:58,751 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 574 transitions. [2022-11-18 20:03:58,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.258064516129032) internal successors, (163), 26 states have internal predecessors, (163), 12 states have call successors, (39), 7 states have call predecessors, (39), 9 states have return successors, (38), 12 states have call predecessors, (38), 12 states have call successors, (38) [2022-11-18 20:03:58,751 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 574 transitions. [2022-11-18 20:03:58,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 20:03:58,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:58,754 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-18 20:03:58,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:58,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:03:58,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:03:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1623462869, now seen corresponding path program 1 times [2022-11-18 20:03:58,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:03:58,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530457965] [2022-11-18 20:03:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:58,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:03:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:03:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:03:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:03:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:03:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:03:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:03:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:03:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:03:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:03:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:03:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:03:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:03:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:03:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 20:03:59,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:03:59,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530457965] [2022-11-18 20:03:59,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530457965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:03:59,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138159857] [2022-11-18 20:03:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:59,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:03:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:03:59,933 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:03:59,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:04:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:00,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 20:04:00,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:00,728 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 [2022-11-18 20:04:01,425 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 [2022-11-18 20:04:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-18 20:04:01,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:01,552 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 32 treesize of output 26 [2022-11-18 20:04:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-18 20:04:01,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138159857] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:04:01,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:04:01,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 21 [2022-11-18 20:04:01,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973295076] [2022-11-18 20:04:01,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:01,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:04:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:04:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:04:01,653 INFO L87 Difference]: Start difference. First operand 460 states and 574 transitions. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 20:04:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:04,459 INFO L93 Difference]: Finished difference Result 769 states and 991 transitions. [2022-11-18 20:04:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:04:04,462 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 128 [2022-11-18 20:04:04,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:04,466 INFO L225 Difference]: With dead ends: 769 [2022-11-18 20:04:04,466 INFO L226 Difference]: Without dead ends: 589 [2022-11-18 20:04:04,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 259 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:04:04,471 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 229 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 264 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:04,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1536 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2659 Invalid, 0 Unknown, 264 Unchecked, 2.4s Time] [2022-11-18 20:04:04,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-11-18 20:04:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 470. [2022-11-18 20:04:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 319 states have (on average 1.1065830721003134) internal successors, (353), 324 states have internal predecessors, (353), 103 states have call successors, (103), 42 states have call predecessors, (103), 47 states have return successors, (128), 103 states have call predecessors, (128), 101 states have call successors, (128) [2022-11-18 20:04:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 584 transitions. [2022-11-18 20:04:04,518 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 584 transitions. Word has length 128 [2022-11-18 20:04:04,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:04,518 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 584 transitions. [2022-11-18 20:04:04,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 17 states have internal predecessors, (129), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-11-18 20:04:04,519 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 584 transitions. [2022-11-18 20:04:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:04:04,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:04,522 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:04,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:04,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:04:04,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1460043151, now seen corresponding path program 1 times [2022-11-18 20:04:04,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13884297] [2022-11-18 20:04:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:04:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:04:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:04:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:04:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:04:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:04:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:04:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:04:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:04:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:04:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:04:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:04:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:04:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:04:05,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:04:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 20:04:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:05,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13884297] [2022-11-18 20:04:05,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13884297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:05,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200254316] [2022-11-18 20:04:05,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:05,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:05,795 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:05,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:04:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 20:04:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:07,024 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 17 treesize of output 9 [2022-11-18 20:04:07,052 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:04:07,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:04:07,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200254316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:07,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:04:07,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2022-11-18 20:04:07,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613049067] [2022-11-18 20:04:07,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:07,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:04:07,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:07,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:04:07,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:04:07,055 INFO L87 Difference]: Start difference. First operand 470 states and 584 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 20:04:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:07,806 INFO L93 Difference]: Finished difference Result 741 states and 945 transitions. [2022-11-18 20:04:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:04:07,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 132 [2022-11-18 20:04:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:07,810 INFO L225 Difference]: With dead ends: 741 [2022-11-18 20:04:07,810 INFO L226 Difference]: Without dead ends: 561 [2022-11-18 20:04:07,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 147 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:04:07,811 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 146 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:07,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1791 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 331 Invalid, 0 Unknown, 68 Unchecked, 0.5s Time] [2022-11-18 20:04:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-18 20:04:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 499. [2022-11-18 20:04:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 340 states have (on average 1.1) internal successors, (374), 345 states have internal predecessors, (374), 107 states have call successors, (107), 45 states have call predecessors, (107), 51 states have return successors, (135), 108 states have call predecessors, (135), 105 states have call successors, (135) [2022-11-18 20:04:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 616 transitions. [2022-11-18 20:04:07,858 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 616 transitions. Word has length 132 [2022-11-18 20:04:07,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:07,860 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 616 transitions. [2022-11-18 20:04:07,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-18 20:04:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 616 transitions. [2022-11-18 20:04:07,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:04:07,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:07,863 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:07,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:04:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:08,072 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -937427379, now seen corresponding path program 1 times [2022-11-18 20:04:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372024992] [2022-11-18 20:04:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:04:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:04:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:04:08,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:04:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:04:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:04:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:04:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:04:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:04:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:04:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:04:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:04:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:04:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:04:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:04:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 20:04:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372024992] [2022-11-18 20:04:09,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372024992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:09,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503425734] [2022-11-18 20:04:09,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:04:09,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:09,019 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:04:09,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:04:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:09,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:04:09,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:09,713 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 [2022-11-18 20:04:10,065 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:04:10,066 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 17 treesize of output 21 [2022-11-18 20:04:10,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-18 20:04:10,539 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 5 treesize of output 3 [2022-11-18 20:04:16,724 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_1658 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1658)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59|) 8))) (and (not (= .cse0 0)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_59|)))))) is different from true [2022-11-18 20:04:16,760 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:04:16,760 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 18 [2022-11-18 20:04:19,189 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:04:19,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:04:19,260 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 [2022-11-18 20:04:23,474 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 [2022-11-18 20:04:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 2 not checked. [2022-11-18 20:04:48,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:48,989 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1660 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1660) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-18 20:04:48,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503425734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:48,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:04:48,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 22] total 30 [2022-11-18 20:04:48,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602698619] [2022-11-18 20:04:48,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:48,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:04:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:48,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:04:48,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1072, Unknown=4, NotChecked=134, Total=1332 [2022-11-18 20:04:49,000 INFO L87 Difference]: Start difference. First operand 499 states and 616 transitions. Second operand has 30 states, 29 states have (on average 4.724137931034483) internal successors, (137), 27 states have internal predecessors, (137), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:05:13,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:13,275 INFO L93 Difference]: Finished difference Result 1016 states and 1231 transitions. [2022-11-18 20:05:13,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:05:13,279 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.724137931034483) internal successors, (137), 27 states have internal predecessors, (137), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 132 [2022-11-18 20:05:13,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:13,284 INFO L225 Difference]: With dead ends: 1016 [2022-11-18 20:05:13,284 INFO L226 Difference]: Without dead ends: 700 [2022-11-18 20:05:13,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 190 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=221, Invalid=2224, Unknown=13, NotChecked=194, Total=2652 [2022-11-18 20:05:13,287 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 123 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1323 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:13,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1483 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 961 Invalid, 0 Unknown, 1323 Unchecked, 1.2s Time] [2022-11-18 20:05:13,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-11-18 20:05:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 659. [2022-11-18 20:05:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 452 states have (on average 1.095132743362832) internal successors, (495), 457 states have internal predecessors, (495), 133 states have call successors, (133), 67 states have call predecessors, (133), 73 states have return successors, (166), 134 states have call predecessors, (166), 131 states have call successors, (166) [2022-11-18 20:05:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 794 transitions. [2022-11-18 20:05:13,349 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 794 transitions. Word has length 132 [2022-11-18 20:05:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:13,350 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 794 transitions. [2022-11-18 20:05:13,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.724137931034483) internal successors, (137), 27 states have internal predecessors, (137), 10 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:05:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 794 transitions. [2022-11-18 20:05:13,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 20:05:13,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:13,354 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:13,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:13,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:13,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:05:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash -55657484, now seen corresponding path program 1 times [2022-11-18 20:05:13,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:05:13,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460618665] [2022-11-18 20:05:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:13,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:05:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:05:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:05:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:05:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:05:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:05:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:05:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:05:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:05:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:05:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:05:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:05:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:05:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:05:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:05:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:05:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 20:05:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-18 20:05:14,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:05:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460618665] [2022-11-18 20:05:14,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460618665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:14,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959051533] [2022-11-18 20:05:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:14,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:05:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:05:14,799 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:05:14,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:05:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:15,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:05:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:15,595 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 [2022-11-18 20:05:16,089 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:05:16,089 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 17 treesize of output 21 [2022-11-18 20:05:16,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-18 20:05:16,596 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 5 treesize of output 3 [2022-11-18 20:05:25,607 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68|) 8))) (and (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_68| .cse0))))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_1885 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_1885)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 20:05:25,644 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:05:25,644 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 18 [2022-11-18 20:05:28,165 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:05:28,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:05:28,255 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 [2022-11-18 20:05:40,505 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 [2022-11-18 20:06:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 50 refuted. 0 times theorem prover too weak. 39 trivial. 2 not checked. [2022-11-18 20:06:08,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:11,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959051533] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:11,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:11,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 31 [2022-11-18 20:06:11,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855853168] [2022-11-18 20:06:11,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:11,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:06:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:11,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:06:11,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1199, Unknown=10, NotChecked=70, Total=1406 [2022-11-18 20:06:11,572 INFO L87 Difference]: Start difference. First operand 659 states and 794 transitions. Second operand has 31 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:06:30,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:06:30,347 INFO L93 Difference]: Finished difference Result 1115 states and 1360 transitions. [2022-11-18 20:06:30,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:06:30,348 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 138 [2022-11-18 20:06:30,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:06:30,353 INFO L225 Difference]: With dead ends: 1115 [2022-11-18 20:06:30,354 INFO L226 Difference]: Without dead ends: 797 [2022-11-18 20:06:30,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 196 SyntacticMatches, 17 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 70.5s TimeCoverageRelationStatistics Valid=277, Invalid=2792, Unknown=15, NotChecked=108, Total=3192 [2022-11-18 20:06:30,358 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 289 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1368 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:06:30,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1613 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1832 Invalid, 0 Unknown, 1368 Unchecked, 2.9s Time] [2022-11-18 20:06:30,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-18 20:06:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 637. [2022-11-18 20:06:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 441 states have (on average 1.0952380952380953) internal successors, (483), 446 states have internal predecessors, (483), 124 states have call successors, (124), 66 states have call predecessors, (124), 71 states have return successors, (152), 124 states have call predecessors, (152), 122 states have call successors, (152) [2022-11-18 20:06:30,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 759 transitions. [2022-11-18 20:06:30,441 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 759 transitions. Word has length 138 [2022-11-18 20:06:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:06:30,442 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 759 transitions. [2022-11-18 20:06:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 10 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:06:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 759 transitions. [2022-11-18 20:06:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:06:30,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:06:30,446 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:06:30,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:06:30,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:06:30,660 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:06:30,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1731363658, now seen corresponding path program 1 times [2022-11-18 20:06:30,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:30,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593206166] [2022-11-18 20:06:30,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:06:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:06:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:06:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:06:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:06:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:06:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:06:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:06:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:06:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:06:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:06:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:06:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:06:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:06:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:06:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:32,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:06:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:32,315 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-11-18 20:06:32,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:32,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593206166] [2022-11-18 20:06:32,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593206166] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:32,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225068315] [2022-11-18 20:06:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:32,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:06:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:32,318 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:06:32,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:06:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:33,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 2862 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:06:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:33,292 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 [2022-11-18 20:06:33,912 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:06:33,912 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 17 treesize of output 21 [2022-11-18 20:06:33,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-18 20:06:34,652 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 5 treesize of output 3 [2022-11-18 20:06:36,754 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77|) 8))) (and (not (= 0 .cse0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77| .cse0))))) is different from true [2022-11-18 20:06:36,838 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_2136 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2136)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77|) 8))) (and (not (= 0 .cse0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_77| .cse0)))))) is different from true [2022-11-18 20:06:36,899 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:06:36,899 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 18 [2022-11-18 20:06:39,510 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:06:39,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:06:39,604 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 27 treesize of output 27 [2022-11-18 20:06:45,874 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 [2022-11-18 20:07:07,848 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 [2022-11-18 20:07:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 53 proven. 42 refuted. 0 times theorem prover too weak. 33 trivial. 22 not checked. [2022-11-18 20:07:07,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:08,111 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2138 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2138) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-18 20:07:08,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225068315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:08,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:07:08,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20] total 30 [2022-11-18 20:07:08,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600523849] [2022-11-18 20:07:08,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:08,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:07:08,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:08,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:07:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=776, Unknown=6, NotChecked=174, Total=1056 [2022-11-18 20:07:08,125 INFO L87 Difference]: Start difference. First operand 637 states and 759 transitions. Second operand has 30 states, 30 states have (on average 5.1) internal successors, (153), 27 states have internal predecessors, (153), 10 states have call successors, (32), 11 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:07:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:32,437 INFO L93 Difference]: Finished difference Result 955 states and 1140 transitions. [2022-11-18 20:07:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:07:32,437 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.1) internal successors, (153), 27 states have internal predecessors, (153), 10 states have call successors, (32), 11 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 141 [2022-11-18 20:07:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:32,441 INFO L225 Difference]: With dead ends: 955 [2022-11-18 20:07:32,441 INFO L226 Difference]: Without dead ends: 769 [2022-11-18 20:07:32,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 203 SyntacticMatches, 19 SemanticMatches, 51 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=252, Invalid=2198, Unknown=12, NotChecked=294, Total=2756 [2022-11-18 20:07:32,444 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 202 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1521 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:32,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1891 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1492 Invalid, 0 Unknown, 1521 Unchecked, 1.9s Time] [2022-11-18 20:07:32,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-18 20:07:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 709. [2022-11-18 20:07:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 504 states have (on average 1.1051587301587302) internal successors, (557), 511 states have internal predecessors, (557), 127 states have call successors, (127), 71 states have call predecessors, (127), 77 states have return successors, (156), 126 states have call predecessors, (156), 125 states have call successors, (156) [2022-11-18 20:07:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 840 transitions. [2022-11-18 20:07:32,511 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 840 transitions. Word has length 141 [2022-11-18 20:07:32,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:32,512 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 840 transitions. [2022-11-18 20:07:32,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.1) internal successors, (153), 27 states have internal predecessors, (153), 10 states have call successors, (32), 11 states have call predecessors, (32), 10 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:07:32,512 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 840 transitions. [2022-11-18 20:07:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-18 20:07:32,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:32,515 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:32,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:32,726 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:07:32,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1949594049, now seen corresponding path program 1 times [2022-11-18 20:07:32,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:32,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398397662] [2022-11-18 20:07:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:07:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:07:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:07:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:07:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:07:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:07:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:07:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:07:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:07:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:07:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:07:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:07:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:07:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:07:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:07:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 20:07:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-18 20:07:34,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:34,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398397662] [2022-11-18 20:07:34,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398397662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:34,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676653101] [2022-11-18 20:07:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:34,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:07:34,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:07:34,063 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:07:34,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:07:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:34,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 20:07:34,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:34,871 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 [2022-11-18 20:07:35,282 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:07:35,282 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 12 treesize of output 14 [2022-11-18 20:07:35,330 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 [2022-11-18 20:07:35,769 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:07:35,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:07:37,912 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_86| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_86|) 8) 0))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_2411 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2411)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 20:07:37,965 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-18 20:07:37,966 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 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-18 20:07:38,591 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-18 20:07:38,591 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 59 treesize of output 67 [2022-11-18 20:07:38,679 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 [2022-11-18 20:07:40,833 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 [2022-11-18 20:07:47,380 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 [2022-11-18 20:07:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 57 proven. 54 refuted. 0 times theorem prover too weak. 52 trivial. 2 not checked. [2022-11-18 20:07:47,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:47,600 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2413 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2413) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-18 20:07:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676653101] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:47,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:07:47,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2022-11-18 20:07:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733935978] [2022-11-18 20:07:47,609 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:07:47,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:07:47,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:07:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=833, Unknown=3, NotChecked=118, Total=1056 [2022-11-18 20:07:47,615 INFO L87 Difference]: Start difference. First operand 709 states and 840 transitions. Second operand has 30 states, 30 states have (on average 5.133333333333334) internal successors, (154), 27 states have internal predecessors, (154), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:07:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:59,182 INFO L93 Difference]: Finished difference Result 1016 states and 1212 transitions. [2022-11-18 20:07:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:07:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.133333333333334) internal successors, (154), 27 states have internal predecessors, (154), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 146 [2022-11-18 20:07:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:59,211 INFO L225 Difference]: With dead ends: 1016 [2022-11-18 20:07:59,211 INFO L226 Difference]: Without dead ends: 840 [2022-11-18 20:07:59,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 219 SyntacticMatches, 17 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=208, Invalid=1774, Unknown=6, NotChecked=174, Total=2162 [2022-11-18 20:07:59,214 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 127 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 911 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:59,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1622 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1524 Invalid, 0 Unknown, 911 Unchecked, 2.4s Time] [2022-11-18 20:07:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-18 20:07:59,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 815. [2022-11-18 20:07:59,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 583 states have (on average 1.1063464837049743) internal successors, (645), 594 states have internal predecessors, (645), 141 states have call successors, (141), 81 states have call predecessors, (141), 90 states have return successors, (177), 139 states have call predecessors, (177), 139 states have call successors, (177) [2022-11-18 20:07:59,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 963 transitions. [2022-11-18 20:07:59,323 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 963 transitions. Word has length 146 [2022-11-18 20:07:59,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:59,324 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 963 transitions. [2022-11-18 20:07:59,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.133333333333334) internal successors, (154), 27 states have internal predecessors, (154), 10 states have call successors, (32), 10 states have call predecessors, (32), 9 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2022-11-18 20:07:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 963 transitions. [2022-11-18 20:07:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-18 20:07:59,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:59,328 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:59,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:59,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-18 20:07:59,543 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:07:59,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:59,544 INFO L85 PathProgramCache]: Analyzing trace with hash -961653828, now seen corresponding path program 1 times [2022-11-18 20:07:59,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467751169] [2022-11-18 20:07:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:59,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:08:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:08:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:08:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:08:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:08:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:08:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:08:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:08:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:08:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:08:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:08:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:00,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:08:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 20:08:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-18 20:08:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:01,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467751169] [2022-11-18 20:08:01,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467751169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:01,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994707453] [2022-11-18 20:08:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:01,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:01,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:01,406 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:01,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:08:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:02,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:08:02,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:02,305 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 [2022-11-18 20:08:02,627 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:08:02,627 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 12 treesize of output 14 [2022-11-18 20:08:02,680 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 [2022-11-18 20:08:03,108 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 20:08:03,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 20:08:05,257 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_2710 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_2710)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|))) (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_94| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_94|) 8) 0)))) is different from true [2022-11-18 20:08:05,300 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-18 20:08:05,300 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 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-18 20:08:05,950 INFO L321 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-11-18 20:08:05,951 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 59 treesize of output 67 [2022-11-18 20:08:06,019 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 [2022-11-18 20:08:08,173 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 [2022-11-18 20:08:14,713 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 [2022-11-18 20:08:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 60 trivial. 2 not checked. [2022-11-18 20:08:14,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:14,841 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2712 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2712) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-11-18 20:08:14,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994707453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:14,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:14,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-11-18 20:08:14,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357723042] [2022-11-18 20:08:14,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:14,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:08:14,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:08:14,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=892, Unknown=3, NotChecked=122, Total=1122 [2022-11-18 20:08:14,851 INFO L87 Difference]: Start difference. First operand 815 states and 963 transitions. Second operand has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 28 states have internal predecessors, (151), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:08:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:08:22,488 INFO L93 Difference]: Finished difference Result 1088 states and 1297 transitions. [2022-11-18 20:08:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:08:22,489 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 28 states have internal predecessors, (151), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 142 [2022-11-18 20:08:22,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:08:22,493 INFO L225 Difference]: With dead ends: 1088 [2022-11-18 20:08:22,493 INFO L226 Difference]: Without dead ends: 900 [2022-11-18 20:08:22,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 216 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=273, Invalid=2593, Unknown=4, NotChecked=210, Total=3080 [2022-11-18 20:08:22,496 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 307 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1205 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:08:22,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1641 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 2537 Invalid, 0 Unknown, 1205 Unchecked, 2.5s Time] [2022-11-18 20:08:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-11-18 20:08:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 829. [2022-11-18 20:08:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 596 states have (on average 1.1090604026845639) internal successors, (661), 610 states have internal predecessors, (661), 141 states have call successors, (141), 81 states have call predecessors, (141), 91 states have return successors, (179), 137 states have call predecessors, (179), 139 states have call successors, (179) [2022-11-18 20:08:22,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 981 transitions. [2022-11-18 20:08:22,580 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 981 transitions. Word has length 142 [2022-11-18 20:08:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:08:22,581 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 981 transitions. [2022-11-18 20:08:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 28 states have internal predecessors, (151), 10 states have call successors, (30), 10 states have call predecessors, (30), 9 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:08:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 981 transitions. [2022-11-18 20:08:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:08:22,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:08:22,584 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:08:22,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:08:22,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:22,795 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:08:22,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:08:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 177335392, now seen corresponding path program 2 times [2022-11-18 20:08:22,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:08:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728070269] [2022-11-18 20:08:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:08:22,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:08:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:08:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:08:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:08:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:08:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:08:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:08:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:08:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:08:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:08:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:08:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:08:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:08:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:08:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:08:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:08:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 20:08:24,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:08:24,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728070269] [2022-11-18 20:08:24,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728070269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:24,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66295705] [2022-11-18 20:08:24,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:08:24,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:08:24,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:08:24,114 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:08:24,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:08:24,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:08:24,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:08:24,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 20:08:24,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:08:24,973 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 [2022-11-18 20:08:25,301 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 5 treesize of output 3 [2022-11-18 20:08:25,418 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:08:25,418 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 17 treesize of output 21 [2022-11-18 20:08:25,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-18 20:08:26,084 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 5 treesize of output 3 [2022-11-18 20:08:28,376 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_102| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_102|) 8))) (and (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_102|)) (not (= .cse0 0)) (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_102|)))) (exists ((|bounded_malloc_#res.base| Int) (v_ArrVal_3033 Int)) (and (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| v_ArrVal_3033)) (< |bounded_malloc_#res.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 20:08:28,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:08:28,416 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 12 treesize of output 14 [2022-11-18 20:08:28,732 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:08:28,732 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 [2022-11-18 20:08:28,800 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 [2022-11-18 20:08:33,046 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 [2022-11-18 20:08:50,594 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 [2022-11-18 20:08:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 57 proven. 65 refuted. 0 times theorem prover too weak. 57 trivial. 2 not checked. [2022-11-18 20:08:52,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:08:54,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66295705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:08:54,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:08:54,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 33 [2022-11-18 20:08:54,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090257022] [2022-11-18 20:08:54,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:08:54,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:08:54,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:08:54,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:08:54,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1069, Unknown=10, NotChecked=66, Total=1260 [2022-11-18 20:08:54,894 INFO L87 Difference]: Start difference. First operand 829 states and 981 transitions. Second operand has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 30 states have internal predecessors, (157), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:09:07,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:07,450 INFO L93 Difference]: Finished difference Result 998 states and 1178 transitions. [2022-11-18 20:09:07,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:09:07,455 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 30 states have internal predecessors, (157), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 145 [2022-11-18 20:09:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:07,461 INFO L225 Difference]: With dead ends: 998 [2022-11-18 20:09:07,461 INFO L226 Difference]: Without dead ends: 885 [2022-11-18 20:09:07,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 217 SyntacticMatches, 15 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=200, Invalid=1771, Unknown=13, NotChecked=86, Total=2070 [2022-11-18 20:09:07,464 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 195 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1504 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:07,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1947 Invalid, 3716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2081 Invalid, 0 Unknown, 1504 Unchecked, 1.9s Time] [2022-11-18 20:09:07,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-18 20:09:07,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 800. [2022-11-18 20:09:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 583 states have (on average 1.1217838765008576) internal successors, (654), 596 states have internal predecessors, (654), 131 states have call successors, (131), 77 states have call predecessors, (131), 85 states have return successors, (155), 126 states have call predecessors, (155), 129 states have call successors, (155) [2022-11-18 20:09:07,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 940 transitions. [2022-11-18 20:09:07,555 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 940 transitions. Word has length 145 [2022-11-18 20:09:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:07,556 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 940 transitions. [2022-11-18 20:09:07,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.757575757575758) internal successors, (157), 30 states have internal predecessors, (157), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-11-18 20:09:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 940 transitions. [2022-11-18 20:09:07,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-18 20:09:07,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:07,559 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:07,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:07,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 20:09:07,770 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:07,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:07,771 INFO L85 PathProgramCache]: Analyzing trace with hash -731247442, now seen corresponding path program 1 times [2022-11-18 20:09:07,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:07,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647855688] [2022-11-18 20:09:07,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:07,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:09:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:09:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:09:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:09:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:09:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:09:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:09:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:09:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:09:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-18 20:09:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:09:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-18 20:09:08,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:08,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647855688] [2022-11-18 20:09:08,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647855688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:08,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:08,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:09:08,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280017009] [2022-11-18 20:09:08,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:08,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:09:08,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:08,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:09:08,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:09:08,721 INFO L87 Difference]: Start difference. First operand 800 states and 940 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 20:09:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:09,922 INFO L93 Difference]: Finished difference Result 1018 states and 1204 transitions. [2022-11-18 20:09:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:09:09,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 180 [2022-11-18 20:09:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:09,926 INFO L225 Difference]: With dead ends: 1018 [2022-11-18 20:09:09,927 INFO L226 Difference]: Without dead ends: 840 [2022-11-18 20:09:09,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:09:09,928 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 162 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:09,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 498 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:09:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-18 20:09:10,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 810. [2022-11-18 20:09:10,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 591 states have (on average 1.120135363790186) internal successors, (662), 604 states have internal predecessors, (662), 131 states have call successors, (131), 77 states have call predecessors, (131), 87 states have return successors, (157), 128 states have call predecessors, (157), 129 states have call successors, (157) [2022-11-18 20:09:10,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 950 transitions. [2022-11-18 20:09:10,048 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 950 transitions. Word has length 180 [2022-11-18 20:09:10,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:10,048 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 950 transitions. [2022-11-18 20:09:10,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-18 20:09:10,049 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 950 transitions. [2022-11-18 20:09:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-18 20:09:10,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:10,052 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:09:10,052 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1336373117, now seen corresponding path program 1 times [2022-11-18 20:09:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:10,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284287251] [2022-11-18 20:09:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:10,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:09:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:09:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:09:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:09:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:09:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 20:09:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:09:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:09:11,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:09:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-18 20:09:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-11-18 20:09:11,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:11,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284287251] [2022-11-18 20:09:11,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284287251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:11,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:11,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:09:11,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257875814] [2022-11-18 20:09:11,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:11,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:09:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:11,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:09:11,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:09:11,790 INFO L87 Difference]: Start difference. First operand 810 states and 950 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 20:09:13,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:13,063 INFO L93 Difference]: Finished difference Result 1012 states and 1196 transitions. [2022-11-18 20:09:13,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:09:13,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 191 [2022-11-18 20:09:13,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:13,067 INFO L225 Difference]: With dead ends: 1012 [2022-11-18 20:09:13,067 INFO L226 Difference]: Without dead ends: 802 [2022-11-18 20:09:13,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:09:13,069 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 311 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:13,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 491 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:09:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-11-18 20:09:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 788. [2022-11-18 20:09:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 575 states have (on average 1.1165217391304347) internal successors, (642), 588 states have internal predecessors, (642), 129 states have call successors, (129), 75 states have call predecessors, (129), 83 states have return successors, (153), 124 states have call predecessors, (153), 127 states have call successors, (153) [2022-11-18 20:09:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 924 transitions. [2022-11-18 20:09:13,153 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 924 transitions. Word has length 191 [2022-11-18 20:09:13,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:13,155 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 924 transitions. [2022-11-18 20:09:13,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 20:09:13,155 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 924 transitions. [2022-11-18 20:09:13,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-11-18 20:09:13,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:13,158 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:13,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:09:13,158 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:13,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1908393118, now seen corresponding path program 1 times [2022-11-18 20:09:13,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:13,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114905765] [2022-11-18 20:09:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:13,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:09:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:09:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:09:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:09:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:09:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:09:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:09:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:09:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:09:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:09:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-18 20:09:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:14,381 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-11-18 20:09:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:14,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114905765] [2022-11-18 20:09:14,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114905765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:14,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:09:14,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:09:14,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033780494] [2022-11-18 20:09:14,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:14,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:09:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:14,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:09:14,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:09:14,385 INFO L87 Difference]: Start difference. First operand 788 states and 924 transitions. Second operand has 11 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-18 20:09:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:15,626 INFO L93 Difference]: Finished difference Result 820 states and 964 transitions. [2022-11-18 20:09:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:09:15,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 191 [2022-11-18 20:09:15,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:15,630 INFO L225 Difference]: With dead ends: 820 [2022-11-18 20:09:15,630 INFO L226 Difference]: Without dead ends: 818 [2022-11-18 20:09:15,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:09:15,631 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:15,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 630 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:09:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-18 20:09:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 802. [2022-11-18 20:09:15,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 584 states have (on average 1.1147260273972603) internal successors, (651), 598 states have internal predecessors, (651), 131 states have call successors, (131), 77 states have call predecessors, (131), 86 states have return successors, (161), 126 states have call predecessors, (161), 129 states have call successors, (161) [2022-11-18 20:09:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 943 transitions. [2022-11-18 20:09:15,726 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 943 transitions. Word has length 191 [2022-11-18 20:09:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:15,727 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 943 transitions. [2022-11-18 20:09:15,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.3) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-11-18 20:09:15,728 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 943 transitions. [2022-11-18 20:09:15,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-18 20:09:15,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:15,731 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:15,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:09:15,731 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:15,732 INFO L85 PathProgramCache]: Analyzing trace with hash -934785180, now seen corresponding path program 1 times [2022-11-18 20:09:15,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:15,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317729398] [2022-11-18 20:09:15,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:15,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:09:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:09:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:09:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:09:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:16,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:09:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:09:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 20:09:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:09:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:09:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:09:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-18 20:09:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-18 20:09:17,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:17,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317729398] [2022-11-18 20:09:17,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317729398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:17,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135062195] [2022-11-18 20:09:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:17,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:17,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:17,191 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:17,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:09:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:18,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:09:18,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-11-18 20:09:18,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:09:18,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135062195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:09:18,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:09:18,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-11-18 20:09:18,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177638009] [2022-11-18 20:09:18,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:09:18,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:09:18,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:18,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:09:18,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:09:18,182 INFO L87 Difference]: Start difference. First operand 802 states and 943 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 20:09:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:18,464 INFO L93 Difference]: Finished difference Result 1014 states and 1184 transitions. [2022-11-18 20:09:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:09:18,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 195 [2022-11-18 20:09:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:18,469 INFO L225 Difference]: With dead ends: 1014 [2022-11-18 20:09:18,469 INFO L226 Difference]: Without dead ends: 455 [2022-11-18 20:09:18,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:09:18,471 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 13 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:18,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1408 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:09:18,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-18 20:09:18,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 424. [2022-11-18 20:09:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 312 states have (on average 1.1025641025641026) internal successors, (344), 319 states have internal predecessors, (344), 67 states have call successors, (67), 40 states have call predecessors, (67), 44 states have return successors, (77), 64 states have call predecessors, (77), 66 states have call successors, (77) [2022-11-18 20:09:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 488 transitions. [2022-11-18 20:09:18,547 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 488 transitions. Word has length 195 [2022-11-18 20:09:18,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:18,547 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 488 transitions. [2022-11-18 20:09:18,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-18 20:09:18,549 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 488 transitions. [2022-11-18 20:09:18,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-18 20:09:18,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:18,551 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:18,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:18,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:09:18,764 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:18,764 INFO L85 PathProgramCache]: Analyzing trace with hash 487982075, now seen corresponding path program 1 times [2022-11-18 20:09:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:18,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033702757] [2022-11-18 20:09:18,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:18,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:09:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:09:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:09:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:09:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:09:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:09:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:09:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-18 20:09:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-11-18 20:09:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-18 20:09:20,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033702757] [2022-11-18 20:09:20,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033702757] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:20,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590831492] [2022-11-18 20:09:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:20,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:20,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:20,151 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:20,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:09:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:09:20,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:21,105 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 [2022-11-18 20:09:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 236 proven. 28 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 20:09:22,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2022-11-18 20:09:23,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590831492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:09:23,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:09:23,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18, 10] total 33 [2022-11-18 20:09:23,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229965537] [2022-11-18 20:09:23,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:23,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:09:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:23,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:09:23,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=956, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:09:23,583 INFO L87 Difference]: Start difference. First operand 424 states and 488 transitions. Second operand has 33 states, 30 states have (on average 6.966666666666667) internal successors, (209), 28 states have internal predecessors, (209), 11 states have call successors, (66), 7 states have call predecessors, (66), 9 states have return successors, (60), 12 states have call predecessors, (60), 11 states have call successors, (60) [2022-11-18 20:09:28,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:28,335 INFO L93 Difference]: Finished difference Result 682 states and 813 transitions. [2022-11-18 20:09:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:09:28,336 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 6.966666666666667) internal successors, (209), 28 states have internal predecessors, (209), 11 states have call successors, (66), 7 states have call predecessors, (66), 9 states have return successors, (60), 12 states have call predecessors, (60), 11 states have call successors, (60) Word has length 202 [2022-11-18 20:09:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:28,338 INFO L225 Difference]: With dead ends: 682 [2022-11-18 20:09:28,338 INFO L226 Difference]: Without dead ends: 476 [2022-11-18 20:09:28,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 433 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=410, Invalid=3346, Unknown=26, NotChecked=0, Total=3782 [2022-11-18 20:09:28,340 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 298 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 3526 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 4414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 730 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:28,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 1385 Invalid, 4414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3526 Invalid, 0 Unknown, 730 Unchecked, 3.2s Time] [2022-11-18 20:09:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-18 20:09:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 374. [2022-11-18 20:09:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 266 states have (on average 1.0639097744360901) internal successors, (283), 271 states have internal predecessors, (283), 66 states have call successors, (66), 39 states have call predecessors, (66), 41 states have return successors, (71), 63 states have call predecessors, (71), 65 states have call successors, (71) [2022-11-18 20:09:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 420 transitions. [2022-11-18 20:09:28,388 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 420 transitions. Word has length 202 [2022-11-18 20:09:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:28,388 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 420 transitions. [2022-11-18 20:09:28,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 6.966666666666667) internal successors, (209), 28 states have internal predecessors, (209), 11 states have call successors, (66), 7 states have call predecessors, (66), 9 states have return successors, (60), 12 states have call predecessors, (60), 11 states have call successors, (60) [2022-11-18 20:09:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 420 transitions. [2022-11-18 20:09:28,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-18 20:09:28,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:28,391 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:28,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:09:28,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:09:28,601 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash 443829862, now seen corresponding path program 2 times [2022-11-18 20:09:28,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:28,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580362955] [2022-11-18 20:09:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:28,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:09:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:09:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:09:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:09:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:09:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:09:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:09:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:09:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:09:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:09:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-18 20:09:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-18 20:09:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:35,186 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 78 proven. 20 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-18 20:09:35,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:35,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580362955] [2022-11-18 20:09:35,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580362955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:35,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698727002] [2022-11-18 20:09:35,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:09:35,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:35,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:35,189 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:35,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:09:36,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:09:36,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:09:36,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 3006 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:09:36,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:36,349 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 [2022-11-18 20:09:38,044 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 22 treesize of output 23 [2022-11-18 20:09:38,046 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 [2022-11-18 20:09:38,530 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 26 treesize of output 25 [2022-11-18 20:09:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 93 proven. 114 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 20:09:39,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:09:39,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698727002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:39,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:09:39,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 19] total 45 [2022-11-18 20:09:39,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443629828] [2022-11-18 20:09:39,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:09:39,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:09:39,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:09:39,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:09:39,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2195, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:09:39,633 INFO L87 Difference]: Start difference. First operand 374 states and 420 transitions. Second operand has 45 states, 41 states have (on average 4.609756097560975) internal successors, (189), 38 states have internal predecessors, (189), 21 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (49), 24 states have call predecessors, (49), 20 states have call successors, (49) [2022-11-18 20:09:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:09:49,976 INFO L93 Difference]: Finished difference Result 785 states and 919 transitions. [2022-11-18 20:09:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-11-18 20:09:49,977 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.609756097560975) internal successors, (189), 38 states have internal predecessors, (189), 21 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (49), 24 states have call predecessors, (49), 20 states have call successors, (49) Word has length 204 [2022-11-18 20:09:49,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:09:49,980 INFO L225 Difference]: With dead ends: 785 [2022-11-18 20:09:49,980 INFO L226 Difference]: Without dead ends: 660 [2022-11-18 20:09:49,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 270 SyntacticMatches, 14 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4650 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1029, Invalid=13733, Unknown=0, NotChecked=0, Total=14762 [2022-11-18 20:09:49,984 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 692 mSDsluCounter, 3672 mSDsCounter, 0 mSdLazyCounter, 7749 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 10421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 7749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2278 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:09:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 3842 Invalid, 10421 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [394 Valid, 7749 Invalid, 0 Unknown, 2278 Unchecked, 6.3s Time] [2022-11-18 20:09:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-18 20:09:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 564. [2022-11-18 20:09:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 400 states have (on average 1.08) internal successors, (432), 409 states have internal predecessors, (432), 99 states have call successors, (99), 56 states have call predecessors, (99), 64 states have return successors, (116), 98 states have call predecessors, (116), 97 states have call successors, (116) [2022-11-18 20:09:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 647 transitions. [2022-11-18 20:09:50,098 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 647 transitions. Word has length 204 [2022-11-18 20:09:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:09:50,099 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 647 transitions. [2022-11-18 20:09:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.609756097560975) internal successors, (189), 38 states have internal predecessors, (189), 21 states have call successors, (51), 7 states have call predecessors, (51), 12 states have return successors, (49), 24 states have call predecessors, (49), 20 states have call successors, (49) [2022-11-18 20:09:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 647 transitions. [2022-11-18 20:09:50,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-18 20:09:50,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:09:50,102 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:09:50,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-18 20:09:50,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:50,313 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:09:50,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:09:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash -982458048, now seen corresponding path program 1 times [2022-11-18 20:09:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:09:50,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193956877] [2022-11-18 20:09:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:09:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:09:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:09:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:09:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:52,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:09:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:09:53,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:09:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:09:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:09:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:09:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:09:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:09:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:09:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:09:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:09:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-11-18 20:09:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:09:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:09:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:09:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-18 20:09:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-18 20:09:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:09:53,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193956877] [2022-11-18 20:09:53,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193956877] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:09:53,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182092130] [2022-11-18 20:09:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:09:53,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:09:53,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:09:53,683 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:09:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:09:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:09:54,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 2990 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-18 20:09:54,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:09:55,867 INFO L321 Elim1Store]: treesize reduction 132, result has 21.0 percent of original size [2022-11-18 20:09:55,867 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 49 treesize of output 80 [2022-11-18 20:09:57,328 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-11-18 20:09:57,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 59 treesize of output 63 [2022-11-18 20:09:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 78 proven. 178 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-18 20:09:59,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:01,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182092130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:01,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:10:01,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 31 [2022-11-18 20:10:01,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104025790] [2022-11-18 20:10:01,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:01,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:10:01,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:10:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:10:01,055 INFO L87 Difference]: Start difference. First operand 564 states and 647 transitions. Second operand has 31 states, 31 states have (on average 5.870967741935484) internal successors, (182), 28 states have internal predecessors, (182), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (47), 12 states have call predecessors, (47), 11 states have call successors, (47) [2022-11-18 20:10:09,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:10:09,585 INFO L93 Difference]: Finished difference Result 1080 states and 1328 transitions. [2022-11-18 20:10:09,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 20:10:09,586 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.870967741935484) internal successors, (182), 28 states have internal predecessors, (182), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (47), 12 states have call predecessors, (47), 11 states have call successors, (47) Word has length 199 [2022-11-18 20:10:09,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:10:09,590 INFO L225 Difference]: With dead ends: 1080 [2022-11-18 20:10:09,591 INFO L226 Difference]: Without dead ends: 853 [2022-11-18 20:10:09,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 254 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=767, Invalid=4470, Unknown=19, NotChecked=0, Total=5256 [2022-11-18 20:10:09,594 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 441 mSDsluCounter, 1552 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 5011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1097 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:10:09,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1740 Invalid, 5011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3690 Invalid, 0 Unknown, 1097 Unchecked, 4.3s Time] [2022-11-18 20:10:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-18 20:10:09,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 644. [2022-11-18 20:10:09,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 460 states have (on average 1.0695652173913044) internal successors, (492), 470 states have internal predecessors, (492), 110 states have call successors, (110), 63 states have call predecessors, (110), 73 states have return successors, (132), 110 states have call predecessors, (132), 108 states have call successors, (132) [2022-11-18 20:10:09,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 734 transitions. [2022-11-18 20:10:09,697 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 734 transitions. Word has length 199 [2022-11-18 20:10:09,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:10:09,697 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 734 transitions. [2022-11-18 20:10:09,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.870967741935484) internal successors, (182), 28 states have internal predecessors, (182), 12 states have call successors, (49), 8 states have call predecessors, (49), 7 states have return successors, (47), 12 states have call predecessors, (47), 11 states have call successors, (47) [2022-11-18 20:10:09,698 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 734 transitions. [2022-11-18 20:10:09,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-18 20:10:09,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:10:09,700 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:10:09,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:10:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:10:09,911 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:10:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:10:09,911 INFO L85 PathProgramCache]: Analyzing trace with hash 531200073, now seen corresponding path program 1 times [2022-11-18 20:10:09,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:10:09,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294196031] [2022-11-18 20:10:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:10:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:10:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:10:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:10:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:10:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:10:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:10:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:10:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:10:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:10:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:10:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:10:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:10:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 20:10:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:10:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:10:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:10:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:10:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-18 20:10:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:10:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:10:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:10:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-18 20:10:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:12,532 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2022-11-18 20:10:12,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:10:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294196031] [2022-11-18 20:10:12,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294196031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324271718] [2022-11-18 20:10:12,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:10:12,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:10:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:10:12,533 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:10:12,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:10:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:10:13,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-18 20:10:13,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:10:13,365 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 [2022-11-18 20:10:13,959 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 5 treesize of output 3 [2022-11-18 20:10:14,087 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:10:14,087 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 [2022-11-18 20:10:14,103 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 [2022-11-18 20:10:15,132 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 5 treesize of output 3 [2022-11-18 20:10:17,440 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_132| Int)) (and (< |c_#StackHeapBarrier| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_132|) (let ((.cse0 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base_BEFORE_CALL_132|))) (<= (mod (select .cse0 0) 18446744073709551616) (mod (select .cse0 16) 18446744073709551616))))) (< |c_bounded_malloc_#res.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_4018 Int)) (= |c_#valid| (store |c_old(#valid)| |c_bounded_malloc_#res.base| v_ArrVal_4018)))) is different from true [2022-11-18 20:10:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:17,471 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 12 treesize of output 14 [2022-11-18 20:10:18,069 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:10:18,069 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 [2022-11-18 20:10:18,186 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 24 treesize of output 24 [2022-11-18 20:10:20,502 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 24 treesize of output 24 [2022-11-18 20:10:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:27,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 56 [2022-11-18 20:10:40,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:10:40,532 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:10:40,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 53 [2022-11-18 20:10:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 93 proven. 239 refuted. 2 times theorem prover too weak. 48 trivial. 4 not checked. [2022-11-18 20:10:48,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:10:51,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324271718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:10:51,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:10:51,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 30] total 49 [2022-11-18 20:10:51,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534561795] [2022-11-18 20:10:51,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:10:51,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:10:51,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:10:51,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:10:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2643, Unknown=25, NotChecked=104, Total=2970 [2022-11-18 20:10:51,204 INFO L87 Difference]: Start difference. First operand 644 states and 734 transitions. Second operand has 49 states, 45 states have (on average 4.822222222222222) internal successors, (217), 44 states have internal predecessors, (217), 21 states have call successors, (57), 13 states have call predecessors, (57), 15 states have return successors, (56), 21 states have call predecessors, (56), 21 states have call successors, (56) [2022-11-18 20:13:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:28,500 INFO L93 Difference]: Finished difference Result 946 states and 1130 transitions. [2022-11-18 20:13:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:13:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 45 states have (on average 4.822222222222222) internal successors, (217), 44 states have internal predecessors, (217), 21 states have call successors, (57), 13 states have call predecessors, (57), 15 states have return successors, (56), 21 states have call predecessors, (56), 21 states have call successors, (56) Word has length 211 [2022-11-18 20:13:28,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:28,503 INFO L225 Difference]: With dead ends: 946 [2022-11-18 20:13:28,503 INFO L226 Difference]: Without dead ends: 807 [2022-11-18 20:13:28,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 258 SyntacticMatches, 18 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 189.3s TimeCoverageRelationStatistics Valid=584, Invalid=8430, Unknown=110, NotChecked=188, Total=9312 [2022-11-18 20:13:28,506 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 297 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 6822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3545 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:28,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 3375 Invalid, 6822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2967 Invalid, 0 Unknown, 3545 Unchecked, 3.2s Time] [2022-11-18 20:13:28,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-18 20:13:28,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 694. [2022-11-18 20:13:28,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 493 states have (on average 1.0649087221095335) internal successors, (525), 504 states have internal predecessors, (525), 119 states have call successors, (119), 70 states have call predecessors, (119), 81 states have return successors, (141), 119 states have call predecessors, (141), 117 states have call successors, (141) [2022-11-18 20:13:28,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 785 transitions. [2022-11-18 20:13:28,612 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 785 transitions. Word has length 211 [2022-11-18 20:13:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:28,613 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 785 transitions. [2022-11-18 20:13:28,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 45 states have (on average 4.822222222222222) internal successors, (217), 44 states have internal predecessors, (217), 21 states have call successors, (57), 13 states have call predecessors, (57), 15 states have return successors, (56), 21 states have call predecessors, (56), 21 states have call successors, (56) [2022-11-18 20:13:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 785 transitions. [2022-11-18 20:13:28,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-11-18 20:13:28,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:28,616 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:28,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-18 20:13:28,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:28,827 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1870585578, now seen corresponding path program 1 times [2022-11-18 20:13:28,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:28,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523987519] [2022-11-18 20:13:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:28,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:13:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:13:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:13:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:13:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:13:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:13:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:13:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:13:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:13:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:13:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:13:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:13:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:13:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:13:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:29,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-18 20:13:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:13:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-18 20:13:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-11-18 20:13:29,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523987519] [2022-11-18 20:13:29,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523987519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:29,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:29,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:13:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451979991] [2022-11-18 20:13:29,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:13:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:13:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:13:29,661 INFO L87 Difference]: Start difference. First operand 694 states and 785 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-18 20:13:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:30,530 INFO L93 Difference]: Finished difference Result 870 states and 1008 transitions. [2022-11-18 20:13:30,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:13:30,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 204 [2022-11-18 20:13:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:30,534 INFO L225 Difference]: With dead ends: 870 [2022-11-18 20:13:30,534 INFO L226 Difference]: Without dead ends: 686 [2022-11-18 20:13:30,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:13:30,536 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 254 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:30,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 300 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:13:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-18 20:13:30,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2022-11-18 20:13:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 485 states have (on average 1.0577319587628866) internal successors, (513), 496 states have internal predecessors, (513), 119 states have call successors, (119), 70 states have call predecessors, (119), 81 states have return successors, (141), 119 states have call predecessors, (141), 117 states have call successors, (141) [2022-11-18 20:13:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 773 transitions. [2022-11-18 20:13:30,642 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 773 transitions. Word has length 204 [2022-11-18 20:13:30,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 773 transitions. [2022-11-18 20:13:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-18 20:13:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 773 transitions. [2022-11-18 20:13:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-11-18 20:13:30,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:30,646 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:13:30,646 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:30,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1824653782, now seen corresponding path program 1 times [2022-11-18 20:13:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:30,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002433707] [2022-11-18 20:13:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:30,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:13:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:13:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:13:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:13:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:13:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:13:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:13:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:13:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:13:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:13:32,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:13:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:13:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:13:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:13:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:13:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-18 20:13:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:13:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-11-18 20:13:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:33,092 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2022-11-18 20:13:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:33,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002433707] [2022-11-18 20:13:33,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002433707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:33,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104791348] [2022-11-18 20:13:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:33,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:33,094 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:33,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:13:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:33,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 3044 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-18 20:13:33,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:34,173 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 [2022-11-18 20:13:35,038 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:13:35,039 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 [2022-11-18 20:13:35,045 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 8 treesize of output 4 [2022-11-18 20:13:35,124 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:13:35,124 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 21 treesize of output 27 [2022-11-18 20:13:35,601 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 [2022-11-18 20:13:35,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:35,692 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 40 treesize of output 47 [2022-11-18 20:13:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:13:36,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 20:13:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 94 proven. 154 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-11-18 20:13:38,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:13:40,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104791348] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:40,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:13:40,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 33] total 44 [2022-11-18 20:13:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385353375] [2022-11-18 20:13:40,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:13:40,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:13:40,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:13:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2364, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:13:40,411 INFO L87 Difference]: Start difference. First operand 686 states and 773 transitions. Second operand has 44 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 39 states have internal predecessors, (193), 16 states have call successors, (53), 9 states have call predecessors, (53), 11 states have return successors, (52), 18 states have call predecessors, (52), 15 states have call successors, (52) [2022-11-18 20:13:48,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:48,983 INFO L93 Difference]: Finished difference Result 923 states and 1105 transitions. [2022-11-18 20:13:48,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:13:48,984 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 39 states have internal predecessors, (193), 16 states have call successors, (53), 9 states have call predecessors, (53), 11 states have return successors, (52), 18 states have call predecessors, (52), 15 states have call successors, (52) Word has length 205 [2022-11-18 20:13:48,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:48,987 INFO L225 Difference]: With dead ends: 923 [2022-11-18 20:13:48,987 INFO L226 Difference]: Without dead ends: 821 [2022-11-18 20:13:48,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 264 SyntacticMatches, 7 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2446 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=832, Invalid=7893, Unknown=17, NotChecked=0, Total=8742 [2022-11-18 20:13:48,989 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 448 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 4263 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 7097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 4263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2503 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:48,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2129 Invalid, 7097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 4263 Invalid, 0 Unknown, 2503 Unchecked, 4.6s Time] [2022-11-18 20:13:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-18 20:13:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 704. [2022-11-18 20:13:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 501 states have (on average 1.0538922155688624) internal successors, (528), 511 states have internal predecessors, (528), 119 states have call successors, (119), 73 states have call predecessors, (119), 83 states have return successors, (141), 119 states have call predecessors, (141), 117 states have call successors, (141) [2022-11-18 20:13:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 788 transitions. [2022-11-18 20:13:49,100 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 788 transitions. Word has length 205 [2022-11-18 20:13:49,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:49,100 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 788 transitions. [2022-11-18 20:13:49,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 4.7073170731707314) internal successors, (193), 39 states have internal predecessors, (193), 16 states have call successors, (53), 9 states have call predecessors, (53), 11 states have return successors, (52), 18 states have call predecessors, (52), 15 states have call successors, (52) [2022-11-18 20:13:49,101 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 788 transitions. [2022-11-18 20:13:49,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-18 20:13:49,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:49,104 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:49,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:13:49,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:49,314 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:49,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:49,314 INFO L85 PathProgramCache]: Analyzing trace with hash 793297937, now seen corresponding path program 1 times [2022-11-18 20:13:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:49,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016386546] [2022-11-18 20:13:49,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:49,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:13:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:13:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:13:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:13:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:13:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:13:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:13:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:13:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:13:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:13:50,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:13:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:13:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:13:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:13:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-18 20:13:50,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:13:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-11-18 20:13:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:50,264 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2022-11-18 20:13:50,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:50,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016386546] [2022-11-18 20:13:50,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016386546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:13:50,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:13:50,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:13:50,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185370051] [2022-11-18 20:13:50,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:13:50,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:13:50,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:13:50,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:13:50,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:13:50,269 INFO L87 Difference]: Start difference. First operand 704 states and 788 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-18 20:13:51,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:13:51,540 INFO L93 Difference]: Finished difference Result 730 states and 819 transitions. [2022-11-18 20:13:51,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:13:51,541 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 206 [2022-11-18 20:13:51,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:13:51,543 INFO L225 Difference]: With dead ends: 730 [2022-11-18 20:13:51,543 INFO L226 Difference]: Without dead ends: 728 [2022-11-18 20:13:51,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:13:51,544 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 180 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:13:51,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 773 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:13:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-18 20:13:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 708. [2022-11-18 20:13:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 505 states have (on average 1.0534653465346535) internal successors, (532), 515 states have internal predecessors, (532), 119 states have call successors, (119), 73 states have call predecessors, (119), 83 states have return successors, (141), 119 states have call predecessors, (141), 117 states have call successors, (141) [2022-11-18 20:13:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 792 transitions. [2022-11-18 20:13:51,649 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 792 transitions. Word has length 206 [2022-11-18 20:13:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:13:51,650 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 792 transitions. [2022-11-18 20:13:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 8 states have internal predecessors, (78), 2 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-18 20:13:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 792 transitions. [2022-11-18 20:13:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-18 20:13:51,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:13:51,653 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:13:51,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:13:51,654 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:13:51,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:13:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1414027016, now seen corresponding path program 1 times [2022-11-18 20:13:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:13:51,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352441444] [2022-11-18 20:13:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:51,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:13:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:13:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:13:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:13:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:13:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:13:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:13:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:13:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:13:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:13:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:13:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:13:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:13:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:13:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:13:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:13:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-18 20:13:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:13:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:13:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:13:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-18 20:13:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-11-18 20:13:57,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:13:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352441444] [2022-11-18 20:13:57,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352441444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:13:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753891859] [2022-11-18 20:13:57,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:13:57,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:13:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:13:57,409 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:13:57,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:13:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:13:58,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3025 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:13:58,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:13:58,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:14:00,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:00,895 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 22 [2022-11-18 20:14:01,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:01,355 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 22 [2022-11-18 20:14:01,444 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 23 treesize of output 11 [2022-11-18 20:14:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 106 proven. 146 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-18 20:14:01,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:14:02,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753891859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:02,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:14:02,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 20] total 53 [2022-11-18 20:14:02,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695965582] [2022-11-18 20:14:02,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:14:02,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-18 20:14:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:14:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-18 20:14:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3006, Unknown=22, NotChecked=0, Total=3192 [2022-11-18 20:14:02,697 INFO L87 Difference]: Start difference. First operand 708 states and 792 transitions. Second operand has 53 states, 48 states have (on average 4.041666666666667) internal successors, (194), 45 states have internal predecessors, (194), 22 states have call successors, (55), 7 states have call predecessors, (55), 14 states have return successors, (54), 24 states have call predecessors, (54), 22 states have call successors, (54) [2022-11-18 20:14:18,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:14:18,571 INFO L93 Difference]: Finished difference Result 1037 states and 1236 transitions. [2022-11-18 20:14:18,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-18 20:14:18,572 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 48 states have (on average 4.041666666666667) internal successors, (194), 45 states have internal predecessors, (194), 22 states have call successors, (55), 7 states have call predecessors, (55), 14 states have return successors, (54), 24 states have call predecessors, (54), 22 states have call successors, (54) Word has length 206 [2022-11-18 20:14:18,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:14:18,575 INFO L225 Difference]: With dead ends: 1037 [2022-11-18 20:14:18,575 INFO L226 Difference]: Without dead ends: 855 [2022-11-18 20:14:18,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 288 SyntacticMatches, 16 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=737, Invalid=13045, Unknown=24, NotChecked=0, Total=13806 [2022-11-18 20:14:18,577 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 509 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 9932 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 11492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 9932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1119 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:14:18,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 3124 Invalid, 11492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [441 Valid, 9932 Invalid, 0 Unknown, 1119 Unchecked, 10.3s Time] [2022-11-18 20:14:18,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-18 20:14:18,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 706. [2022-11-18 20:14:18,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 505 states have (on average 1.0534653465346535) internal successors, (532), 516 states have internal predecessors, (532), 117 states have call successors, (117), 72 states have call predecessors, (117), 83 states have return successors, (140), 117 states have call predecessors, (140), 115 states have call successors, (140) [2022-11-18 20:14:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 789 transitions. [2022-11-18 20:14:18,707 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 789 transitions. Word has length 206 [2022-11-18 20:14:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:14:18,707 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 789 transitions. [2022-11-18 20:14:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 48 states have (on average 4.041666666666667) internal successors, (194), 45 states have internal predecessors, (194), 22 states have call successors, (55), 7 states have call predecessors, (55), 14 states have return successors, (54), 24 states have call predecessors, (54), 22 states have call successors, (54) [2022-11-18 20:14:18,708 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 789 transitions. [2022-11-18 20:14:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-18 20:14:18,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:14:18,710 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:14:18,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:14:18,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:14:18,921 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:14:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:14:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1961060689, now seen corresponding path program 1 times [2022-11-18 20:14:18,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:14:18,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595763358] [2022-11-18 20:14:18,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:18,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:14:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:14:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:14:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:14:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:14:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:14:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:14:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:14:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 20:14:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:14:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 20:14:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:14:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:14:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:14:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:14:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:14:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:14:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:22,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-11-18 20:14:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:14:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:14:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:14:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-18 20:14:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 42 proven. 11 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-11-18 20:14:23,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:14:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595763358] [2022-11-18 20:14:23,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595763358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:14:23,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163510257] [2022-11-18 20:14:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:14:23,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:14:23,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:14:23,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:14:23,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c60e86a-7100-4ec0-ae79-048aea39ed59/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:14:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:14:24,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 3057 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-18 20:14:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:14:24,765 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 [2022-11-18 20:14:25,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:25,204 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 12 treesize of output 14 [2022-11-18 20:14:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:14:26,443 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 25 [2022-11-18 20:14:26,450 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 21 treesize of output 25 [2022-11-18 20:14:26,591 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 5 treesize of output 3 [2022-11-18 20:14:38,874 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (and (<= (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42| 2) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_42|) 16) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|))))) is different from true [2022-11-18 20:15:08,660 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:15:08,660 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 [2022-11-18 20:15:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:08,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-11-18 20:15:08,888 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 [2022-11-18 20:15:09,093 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 20 treesize of output 8 [2022-11-18 20:15:09,379 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4768 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_4768) |c_#memory_int|)) is different from true [2022-11-18 20:15:09,392 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4768 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_4768))) is different from true [2022-11-18 20:15:09,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:15:09,422 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:15:09,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2022-11-18 20:15:09,431 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 13 treesize of output 9 [2022-11-18 20:15:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 141 proven. 71 refuted. 27 times theorem prover too weak. 105 trivial. 37 not checked. [2022-11-18 20:15:11,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:15:14,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163510257] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:15:14,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:15:14,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 45] total 78 [2022-11-18 20:15:14,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74400538] [2022-11-18 20:15:14,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:15:14,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-11-18 20:15:14,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:14,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-11-18 20:15:14,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=7137, Unknown=25, NotChecked=516, Total=8010 [2022-11-18 20:15:14,894 INFO L87 Difference]: Start difference. First operand 706 states and 789 transitions. Second operand has 78 states, 71 states have (on average 2.859154929577465) internal successors, (203), 64 states have internal predecessors, (203), 22 states have call successors, (51), 11 states have call predecessors, (51), 20 states have return successors, (50), 28 states have call predecessors, (50), 21 states have call successors, (50)