./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_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_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/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_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/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_b2183892-69d2-4e56-843b-7088d35d3cfa/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 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d --- 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 20:33:46,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:33:46,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:33:46,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:33:46,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:33:46,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:33:46,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:33:46,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:33:46,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:33:46,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:33:46,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:33:46,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:33:46,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:33:46,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:33:46,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:33:46,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:33:46,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:33:46,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:33:46,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:33:46,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:33:46,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:33:46,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:33:46,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:33:46,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:33:46,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:33:46,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:33:46,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:33:46,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:33:46,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:33:46,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:33:46,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:33:46,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:33:46,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:33:46,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:33:46,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:33:46,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:33:46,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:33:46,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:33:46,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:33:46,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:33:46,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:33:46,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:33:46,516 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:33:46,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:33:46,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:33:46,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:33:46,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:33:46,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:33:46,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:33:46,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:33:46,520 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:33:46,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:33:46,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:33:46,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:33:46,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:33:46,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:33:46,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:33:46,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:33:46,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:33:46,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:33:46,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:33:46,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:33:46,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:33:46,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:46,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:33:46,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:33:46,524 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:33:46,524 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:33:46,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:33:46,524 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:33:46,525 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:33:46,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:33:46,525 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_b2183892-69d2-4e56-843b-7088d35d3cfa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fce72e4c86270281dd05ead367908aebeea58cd11d1d4da51b0e6a5af67a67d [2022-11-18 20:33:46,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:33:46,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:33:46,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:33:46,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:33:46,799 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:33:46,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2022-11-18 20:33:46,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/data/e6822fa10/b609e703eea041549dbd1cb737cd488e/FLAG2a87acc04 [2022-11-18 20:33:47,651 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:33:47,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2022-11-18 20:33:47,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/data/e6822fa10/b609e703eea041549dbd1cb737cd488e/FLAG2a87acc04 [2022-11-18 20:33:47,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/data/e6822fa10/b609e703eea041549dbd1cb737cd488e [2022-11-18 20:33:47,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:33:47,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:33:47,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:47,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:33:47,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:33:47,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:47" (1/1) ... [2022-11-18 20:33:47,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd4a1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:47, skipping insertion in model container [2022-11-18 20:33:47,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:33:47" (1/1) ... [2022-11-18 20:33:47,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:33:47,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:33:48,190 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_b2183892-69d2-4e56-843b-7088d35d3cfa/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2022-11-18 20:33:48,198 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_b2183892-69d2-4e56-843b-7088d35d3cfa/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2022-11-18 20:33:49,288 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,289 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,290 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,290 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,292 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,308 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,309 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,311 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,311 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:49,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:33:49,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:33:49,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:33:49,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:33:49,784 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:33:49,786 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:33:49,789 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:33:49,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:33:49,793 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:33:49,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:33:49,995 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:33:50,025 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,026 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,123 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,129 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:50,286 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:33:50,313 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_b2183892-69d2-4e56-843b-7088d35d3cfa/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2022-11-18 20:33:50,315 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_b2183892-69d2-4e56-843b-7088d35d3cfa/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2022-11-18 20:33:50,440 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,442 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,444 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,445 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,463 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,472 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,476 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,477 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,478 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,554 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:33:50,555 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:33:50,557 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:33:50,559 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:33:50,560 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:33:50,561 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:33:50,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:33:50,562 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:33:50,564 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:33:50,564 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:33:50,611 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:33:50,629 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,634 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,716 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,716 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:33:50,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:33:51,046 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:33:51,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51 WrapperNode [2022-11-18 20:33:51,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:33:51,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:51,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:33:51,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:33:51,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,265 INFO L138 Inliner]: procedures = 692, calls = 2499, calls flagged for inlining = 57, calls inlined = 12, statements flattened = 1002 [2022-11-18 20:33:51,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:33:51,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:33:51,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:33:51,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:33:51,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:33:51,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:33:51,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:33:51,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:33:51,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (1/1) ... [2022-11-18 20:33:51,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:33:51,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:51,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:33:51,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:33:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-18 20:33:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-18 20:33:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:33:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 20:33:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 20:33:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:33:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 20:33:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 20:33:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:33:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:33:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:33:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:33:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:33:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:33:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:33:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 20:33:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 20:33:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2022-11-18 20:33:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2022-11-18 20:33:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-18 20:33:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-18 20:33:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:33:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:33:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:33:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-18 20:33:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-18 20:33:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:33:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:33:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 20:33:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 20:33:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-18 20:33:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-18 20:33:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:33:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:33:51,936 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:33:51,939 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:33:53,692 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:33:53,707 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:33:53,708 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-18 20:33:53,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:53 BoogieIcfgContainer [2022-11-18 20:33:53,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:33:53,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:33:53,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:33:53,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:33:53,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:33:47" (1/3) ... [2022-11-18 20:33:53,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b975c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:53, skipping insertion in model container [2022-11-18 20:33:53,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:33:51" (2/3) ... [2022-11-18 20:33:53,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b975c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:33:53, skipping insertion in model container [2022-11-18 20:33:53,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:33:53" (3/3) ... [2022-11-18 20:33:53,724 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2022-11-18 20:33:53,750 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:33:53,750 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:33:53,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:33:53,879 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;@5bae5555, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:33:53,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:33:53,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 110 states have internal predecessors, (146), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-18 20:33:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 20:33:53,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:53,905 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:33:53,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1108355223, now seen corresponding path program 1 times [2022-11-18 20:33:53,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:53,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512224020] [2022-11-18 20:33:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:53,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:33:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:33:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:33:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:33:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:33:54,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:54,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512224020] [2022-11-18 20:33:54,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512224020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:54,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:54,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:33:54,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412721325] [2022-11-18 20:33:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:54,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:33:54,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:55,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:33:55,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:33:55,037 INFO L87 Difference]: Start difference. First operand has 160 states, 111 states have (on average 1.3153153153153154) internal successors, (146), 110 states have internal predecessors, (146), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:33:55,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:55,811 INFO L93 Difference]: Finished difference Result 320 states and 455 transitions. [2022-11-18 20:33:55,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:33:55,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-18 20:33:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:55,836 INFO L225 Difference]: With dead ends: 320 [2022-11-18 20:33:55,837 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 20:33:55,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:33:55,850 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 128 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:55,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 268 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:33:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 20:33:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2022-11-18 20:33:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 106 states have internal predecessors, (132), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-18 20:33:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2022-11-18 20:33:55,960 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 46 [2022-11-18 20:33:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:55,963 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2022-11-18 20:33:55,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:33:55,963 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2022-11-18 20:33:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 20:33:55,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:55,968 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:33:55,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:33:55,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1165194515, now seen corresponding path program 1 times [2022-11-18 20:33:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991213276] [2022-11-18 20:33:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:55,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:33:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:33:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:33:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:33:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:33:57,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:57,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991213276] [2022-11-18 20:33:57,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991213276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:57,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:57,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:33:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34396049] [2022-11-18 20:33:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:33:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:57,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:33:57,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:33:57,051 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:33:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:57,930 INFO L93 Difference]: Finished difference Result 307 states and 413 transitions. [2022-11-18 20:33:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:33:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 46 [2022-11-18 20:33:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:57,934 INFO L225 Difference]: With dead ends: 307 [2022-11-18 20:33:57,935 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 20:33:57,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:33:57,937 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 208 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:57,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 460 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:33:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 20:33:57,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2022-11-18 20:33:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 109 states have internal predecessors, (134), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-18 20:33:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 215 transitions. [2022-11-18 20:33:57,963 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 215 transitions. Word has length 46 [2022-11-18 20:33:57,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:57,963 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 215 transitions. [2022-11-18 20:33:57,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:33:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 215 transitions. [2022-11-18 20:33:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 20:33:57,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:57,966 INFO L195 NwaCegarLoop]: trace histogram [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 20:33:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:33:57,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:57,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash 862482782, now seen corresponding path program 1 times [2022-11-18 20:33:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:57,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404336985] [2022-11-18 20:33:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:33:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:33:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:33:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:33:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:33:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:33:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:33:58,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:58,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404336985] [2022-11-18 20:33:58,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404336985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:33:58,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:33:58,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:33:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477802699] [2022-11-18 20:33:58,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:33:58,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:33:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:33:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:33:58,593 INFO L87 Difference]: Start difference. First operand 158 states and 215 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:33:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:59,445 INFO L93 Difference]: Finished difference Result 210 states and 276 transitions. [2022-11-18 20:33:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:33:59,446 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2022-11-18 20:33:59,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:59,448 INFO L225 Difference]: With dead ends: 210 [2022-11-18 20:33:59,448 INFO L226 Difference]: Without dead ends: 172 [2022-11-18 20:33:59,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:33:59,449 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 131 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:59,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 634 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:33:59,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-18 20:33:59,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 160. [2022-11-18 20:33:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 111 states have internal predecessors, (136), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-18 20:33:59,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 217 transitions. [2022-11-18 20:33:59,468 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 217 transitions. Word has length 52 [2022-11-18 20:33:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:59,469 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 217 transitions. [2022-11-18 20:33:59,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 20:33:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 217 transitions. [2022-11-18 20:33:59,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:33:59,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:59,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:59,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:33:59,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:33:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash 877723525, now seen corresponding path program 1 times [2022-11-18 20:33:59,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:59,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485251080] [2022-11-18 20:33:59,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:34:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:34:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:34:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:01,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485251080] [2022-11-18 20:34:01,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485251080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:01,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392723564] [2022-11-18 20:34:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:01,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:01,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:01,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:01,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:34:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:01,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 2467 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:34:01,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:02,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:34:02,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:02,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392723564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:02,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:02,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2022-11-18 20:34:02,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932395044] [2022-11-18 20:34:02,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:02,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:34:02,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:02,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:34:02,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:34:02,096 INFO L87 Difference]: Start difference. First operand 160 states and 217 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:02,185 INFO L93 Difference]: Finished difference Result 204 states and 270 transitions. [2022-11-18 20:34:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:34:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-11-18 20:34:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:02,188 INFO L225 Difference]: With dead ends: 204 [2022-11-18 20:34:02,189 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 20:34:02,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:34:02,193 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 3 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:02,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1024 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:02,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 20:34:02,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2022-11-18 20:34:02,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 111 states have internal predecessors, (136), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-18 20:34:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 217 transitions. [2022-11-18 20:34:02,239 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 217 transitions. Word has length 60 [2022-11-18 20:34:02,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:02,240 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 217 transitions. [2022-11-18 20:34:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 217 transitions. [2022-11-18 20:34:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:34:02,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:02,257 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:34:02,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:02,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:02,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:02,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash -268177860, now seen corresponding path program 1 times [2022-11-18 20:34:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:02,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546919397] [2022-11-18 20:34:02,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:02,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:34:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:34:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:34:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:03,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:34:03,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:03,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546919397] [2022-11-18 20:34:03,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546919397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:03,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:03,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:34:03,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22083372] [2022-11-18 20:34:03,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:03,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:34:03,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:03,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:34:03,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:34:03,802 INFO L87 Difference]: Start difference. First operand 160 states and 217 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:05,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:05,016 INFO L93 Difference]: Finished difference Result 181 states and 244 transitions. [2022-11-18 20:34:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:34:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2022-11-18 20:34:05,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:05,019 INFO L225 Difference]: With dead ends: 181 [2022-11-18 20:34:05,020 INFO L226 Difference]: Without dead ends: 174 [2022-11-18 20:34:05,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:34:05,021 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 153 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:05,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 855 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:34:05,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-18 20:34:05,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 164. [2022-11-18 20:34:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 112 states have (on average 1.2410714285714286) internal successors, (139), 115 states have internal predecessors, (139), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2022-11-18 20:34:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 227 transitions. [2022-11-18 20:34:05,038 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 227 transitions. Word has length 64 [2022-11-18 20:34:05,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:05,038 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 227 transitions. [2022-11-18 20:34:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:05,039 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 227 transitions. [2022-11-18 20:34:05,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:34:05,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:05,041 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:34:05,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:34:05,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash 7549444, now seen corresponding path program 1 times [2022-11-18 20:34:05,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:05,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322243387] [2022-11-18 20:34:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:34:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:34:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:34:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:06,314 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:34:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322243387] [2022-11-18 20:34:06,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322243387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:06,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:06,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841349000] [2022-11-18 20:34:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:06,323 INFO L87 Difference]: Start difference. First operand 164 states and 227 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:07,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:07,286 INFO L93 Difference]: Finished difference Result 347 states and 495 transitions. [2022-11-18 20:34:07,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:34:07,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2022-11-18 20:34:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:07,289 INFO L225 Difference]: With dead ends: 347 [2022-11-18 20:34:07,290 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 20:34:07,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:07,294 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 223 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:07,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 451 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:34:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 20:34:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 169. [2022-11-18 20:34:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 117 states have (on average 1.2478632478632479) internal successors, (146), 120 states have internal predecessors, (146), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2022-11-18 20:34:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 234 transitions. [2022-11-18 20:34:07,323 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 234 transitions. Word has length 68 [2022-11-18 20:34:07,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:07,323 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 234 transitions. [2022-11-18 20:34:07,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 234 transitions. [2022-11-18 20:34:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:34:07,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:07,328 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:34:07,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:34:07,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:07,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:07,330 INFO L85 PathProgramCache]: Analyzing trace with hash 265714882, now seen corresponding path program 1 times [2022-11-18 20:34:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:07,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393741391] [2022-11-18 20:34:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:34:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:34:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:34:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:09,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:09,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393741391] [2022-11-18 20:34:09,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393741391] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369239943] [2022-11-18 20:34:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:09,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:09,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:09,959 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:09,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:34:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:10,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:34:10,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:10,797 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 11 treesize of output 7 [2022-11-18 20:34:11,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:34:11,346 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-18 20:34:11,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-11-18 20:34:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:11,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:11,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369239943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:11,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:11,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 17 [2022-11-18 20:34:11,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038243817] [2022-11-18 20:34:11,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:11,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:34:11,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:34:11,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:34:11,358 INFO L87 Difference]: Start difference. First operand 169 states and 234 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:34:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:11,605 INFO L93 Difference]: Finished difference Result 348 states and 478 transitions. [2022-11-18 20:34:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:34:11,606 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-18 20:34:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:11,609 INFO L225 Difference]: With dead ends: 348 [2022-11-18 20:34:11,610 INFO L226 Difference]: Without dead ends: 188 [2022-11-18 20:34:11,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:34:11,612 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 21 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:11,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1651 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 134 Unchecked, 0.2s Time] [2022-11-18 20:34:11,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-18 20:34:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 185. [2022-11-18 20:34:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 133 states have (on average 1.255639097744361) internal successors, (167), 135 states have internal predecessors, (167), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (44), 37 states have call predecessors, (44), 37 states have call successors, (44) [2022-11-18 20:34:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2022-11-18 20:34:11,638 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 68 [2022-11-18 20:34:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:11,640 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2022-11-18 20:34:11,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 9 states have internal predecessors, (53), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:34:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2022-11-18 20:34:11,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:34:11,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:11,642 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:11,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:11,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:11,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:11,854 INFO L85 PathProgramCache]: Analyzing trace with hash -631678396, now seen corresponding path program 1 times [2022-11-18 20:34:11,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:11,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171794822] [2022-11-18 20:34:11,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:11,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:34:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:34:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:34:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:34:12,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:12,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171794822] [2022-11-18 20:34:12,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171794822] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:12,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146648804] [2022-11-18 20:34:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:12,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:12,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:12,343 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:34:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:34:13,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:34:13,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146648804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:13,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:13,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:34:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475117852] [2022-11-18 20:34:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:13,036 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:13,082 INFO L93 Difference]: Finished difference Result 348 states and 477 transitions. [2022-11-18 20:34:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:13,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-18 20:34:13,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:13,086 INFO L225 Difference]: With dead ends: 348 [2022-11-18 20:34:13,086 INFO L226 Difference]: Without dead ends: 194 [2022-11-18 20:34:13,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 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 20:34:13,088 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 20 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 613 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 20:34:13,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 613 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:13,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-18 20:34:13,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2022-11-18 20:34:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 126 states have (on average 1.253968253968254) internal successors, (158), 127 states have internal predecessors, (158), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-18 20:34:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 239 transitions. [2022-11-18 20:34:13,110 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 239 transitions. Word has length 68 [2022-11-18 20:34:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:13,111 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 239 transitions. [2022-11-18 20:34:13,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 239 transitions. [2022-11-18 20:34:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:34:13,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:13,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:13,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 20:34:13,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:13,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1530819000, now seen corresponding path program 1 times [2022-11-18 20:34:13,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:13,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948862919] [2022-11-18 20:34:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:13,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:34:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:34:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:34:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:34:14,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948862919] [2022-11-18 20:34:14,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948862919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:14,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955720270] [2022-11-18 20:34:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:14,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:14,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:14,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:14,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:34:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:15,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:34:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:34:15,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:15,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955720270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:15,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-11-18 20:34:15,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043964241] [2022-11-18 20:34:15,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:15,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:34:15,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:34:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:15,361 INFO L87 Difference]: Start difference. First operand 177 states and 239 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:34:15,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:15,584 INFO L93 Difference]: Finished difference Result 339 states and 467 transitions. [2022-11-18 20:34:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:34:15,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-18 20:34:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:15,587 INFO L225 Difference]: With dead ends: 339 [2022-11-18 20:34:15,588 INFO L226 Difference]: Without dead ends: 185 [2022-11-18 20:34:15,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:34:15,592 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 13 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:15,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1518 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:34:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-18 20:34:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2022-11-18 20:34:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 132 states have internal predecessors, (162), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2022-11-18 20:34:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 250 transitions. [2022-11-18 20:34:15,612 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 250 transitions. Word has length 72 [2022-11-18 20:34:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:15,614 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 250 transitions. [2022-11-18 20:34:15,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:34:15,614 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 250 transitions. [2022-11-18 20:34:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:15,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:15,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:15,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-18 20:34:15,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:15,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1019185037, now seen corresponding path program 1 times [2022-11-18 20:34:15,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:15,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79792] [2022-11-18 20:34:15,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:15,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:34:16,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:16,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79792] [2022-11-18 20:34:16,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:16,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892580232] [2022-11-18 20:34:16,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:16,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:16,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:16,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:16,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:34:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:34:16,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:16,970 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:16,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:16,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892580232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:16,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:16,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:34:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739975047] [2022-11-18 20:34:16,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:16,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:16,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:16,974 INFO L87 Difference]: Start difference. First operand 182 states and 250 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:17,016 INFO L93 Difference]: Finished difference Result 346 states and 483 transitions. [2022-11-18 20:34:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-18 20:34:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:17,019 INFO L225 Difference]: With dead ends: 346 [2022-11-18 20:34:17,019 INFO L226 Difference]: Without dead ends: 185 [2022-11-18 20:34:17,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 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 20:34:17,021 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 9 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 606 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 20:34:17,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 606 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:17,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-18 20:34:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2022-11-18 20:34:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 130 states have (on average 1.2307692307692308) internal successors, (160), 132 states have internal predecessors, (160), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2022-11-18 20:34:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 248 transitions. [2022-11-18 20:34:17,037 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 248 transitions. Word has length 74 [2022-11-18 20:34:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:17,037 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 248 transitions. [2022-11-18 20:34:17,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:17,038 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 248 transitions. [2022-11-18 20:34:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:17,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:17,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:17,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:17,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:34:17,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:17,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1357293521, now seen corresponding path program 1 times [2022-11-18 20:34:17,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:17,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230138612] [2022-11-18 20:34:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:34:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230138612] [2022-11-18 20:34:17,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230138612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404734087] [2022-11-18 20:34:17,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:17,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:17,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:17,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:34:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:18,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2500 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:34:18,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:18,367 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:34:18,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:18,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404734087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:18,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:18,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 20:34:18,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005176493] [2022-11-18 20:34:18,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:18,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:34:18,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:18,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:34:18,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:34:18,377 INFO L87 Difference]: Start difference. First operand 182 states and 248 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:18,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:18,438 INFO L93 Difference]: Finished difference Result 352 states and 498 transitions. [2022-11-18 20:34:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:34:18,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2022-11-18 20:34:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:18,441 INFO L225 Difference]: With dead ends: 352 [2022-11-18 20:34:18,442 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 20:34:18,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 88 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 20:34:18,444 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 34 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:18,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 604 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:34:18,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 20:34:18,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 178. [2022-11-18 20:34:18,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 128 states have internal predecessors, (153), 38 states have call successors, (38), 12 states have call predecessors, (38), 13 states have return successors, (50), 37 states have call predecessors, (50), 37 states have call successors, (50) [2022-11-18 20:34:18,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 241 transitions. [2022-11-18 20:34:18,473 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 241 transitions. Word has length 74 [2022-11-18 20:34:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:18,474 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 241 transitions. [2022-11-18 20:34:18,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:34:18,474 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 241 transitions. [2022-11-18 20:34:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:18,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:18,476 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:18,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:18,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:34:18,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:18,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1341774803, now seen corresponding path program 1 times [2022-11-18 20:34:18,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941012449] [2022-11-18 20:34:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:18,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:22,410 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941012449] [2022-11-18 20:34:22,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941012449] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410948822] [2022-11-18 20:34:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:22,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:22,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:22,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:22,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:34:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:23,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 20:34:23,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:23,213 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 20:34:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:24,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410948822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:25,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:25,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 9] total 29 [2022-11-18 20:34:25,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351555156] [2022-11-18 20:34:25,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:25,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-18 20:34:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-18 20:34:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:34:25,076 INFO L87 Difference]: Start difference. First operand 178 states and 241 transitions. Second operand has 29 states, 28 states have (on average 4.5) internal successors, (126), 27 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:34:28,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:28,267 INFO L93 Difference]: Finished difference Result 232 states and 310 transitions. [2022-11-18 20:34:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:34:28,268 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.5) internal successors, (126), 27 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 74 [2022-11-18 20:34:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:28,270 INFO L225 Difference]: With dead ends: 232 [2022-11-18 20:34:28,270 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 20:34:28,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 141 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:34:28,271 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 378 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:28,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1366 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1905 Invalid, 0 Unknown, 283 Unchecked, 2.2s Time] [2022-11-18 20:34:28,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 20:34:28,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 198. [2022-11-18 20:34:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.1971830985915493) internal successors, (170), 145 states have internal predecessors, (170), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (59), 37 states have call predecessors, (59), 38 states have call successors, (59) [2022-11-18 20:34:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 268 transitions. [2022-11-18 20:34:28,301 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 268 transitions. Word has length 74 [2022-11-18 20:34:28,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:28,301 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 268 transitions. [2022-11-18 20:34:28,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.5) internal successors, (126), 27 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:34:28,302 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 268 transitions. [2022-11-18 20:34:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:28,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:28,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:28,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 20:34:28,517 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:28,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:28,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1784602215, now seen corresponding path program 1 times [2022-11-18 20:34:28,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:28,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497103336] [2022-11-18 20:34:28,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:28,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:34:30,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:30,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497103336] [2022-11-18 20:34:30,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497103336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:30,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986583539] [2022-11-18 20:34:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:30,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:30,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:30,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:34:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:31,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 20:34:31,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:32,561 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:32,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:33,417 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:33,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 1 [2022-11-18 20:34:33,698 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-18 20:34:33,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 36 [2022-11-18 20:34:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:33,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986583539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:33,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:33,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 32 [2022-11-18 20:34:33,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108068770] [2022-11-18 20:34:33,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:33,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:34:33,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:34:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:34:33,865 INFO L87 Difference]: Start difference. First operand 198 states and 268 transitions. Second operand has 32 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:34:38,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:38,102 INFO L93 Difference]: Finished difference Result 279 states and 379 transitions. [2022-11-18 20:34:38,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:34:38,103 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 74 [2022-11-18 20:34:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:38,105 INFO L225 Difference]: With dead ends: 279 [2022-11-18 20:34:38,106 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 20:34:38,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=538, Invalid=2542, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:34:38,108 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 439 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 599 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:38,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1229 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1636 Invalid, 0 Unknown, 599 Unchecked, 2.2s Time] [2022-11-18 20:34:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 20:34:38,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 243. [2022-11-18 20:34:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 178 states have (on average 1.1741573033707866) internal successors, (209), 182 states have internal predecessors, (209), 44 states have call successors, (44), 18 states have call predecessors, (44), 20 states have return successors, (78), 42 states have call predecessors, (78), 43 states have call successors, (78) [2022-11-18 20:34:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 331 transitions. [2022-11-18 20:34:38,132 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 331 transitions. Word has length 74 [2022-11-18 20:34:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:38,132 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 331 transitions. [2022-11-18 20:34:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.75) internal successors, (120), 30 states have internal predecessors, (120), 6 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 20:34:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 331 transitions. [2022-11-18 20:34:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:38,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:38,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:38,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:38,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:38,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:38,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1526436777, now seen corresponding path program 1 times [2022-11-18 20:34:38,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649694686] [2022-11-18 20:34:38,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:38,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:34:39,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649694686] [2022-11-18 20:34:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649694686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:39,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:39,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:34:39,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80682704] [2022-11-18 20:34:39,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:34:39,214 INFO L87 Difference]: Start difference. First operand 243 states and 331 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:40,039 INFO L93 Difference]: Finished difference Result 437 states and 605 transitions. [2022-11-18 20:34:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:34:40,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 74 [2022-11-18 20:34:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:40,042 INFO L225 Difference]: With dead ends: 437 [2022-11-18 20:34:40,042 INFO L226 Difference]: Without dead ends: 244 [2022-11-18 20:34:40,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:34:40,044 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 164 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:40,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 539 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:34:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-18 20:34:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 234. [2022-11-18 20:34:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.1705882352941177) internal successors, (199), 173 states have internal predecessors, (199), 44 states have call successors, (44), 18 states have call predecessors, (44), 19 states have return successors, (77), 42 states have call predecessors, (77), 43 states have call successors, (77) [2022-11-18 20:34:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 320 transitions. [2022-11-18 20:34:40,079 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 320 transitions. Word has length 74 [2022-11-18 20:34:40,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:40,080 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 320 transitions. [2022-11-18 20:34:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 320 transitions. [2022-11-18 20:34:40,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:34:40,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:40,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:40,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:34:40,082 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1612971803, now seen corresponding path program 1 times [2022-11-18 20:34:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553630939] [2022-11-18 20:34:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:40,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:42,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:34:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:43,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553630939] [2022-11-18 20:34:43,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553630939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:43,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71225359] [2022-11-18 20:34:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:43,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:43,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:43,808 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:43,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:34:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:44,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:34:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:44,486 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 20:34:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:45,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:46,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71225359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:46,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:46,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 11] total 33 [2022-11-18 20:34:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632016103] [2022-11-18 20:34:46,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:34:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:46,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:34:46,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:34:46,724 INFO L87 Difference]: Start difference. First operand 234 states and 320 transitions. Second operand has 33 states, 32 states have (on average 3.9375) internal successors, (126), 31 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:34:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:51,316 INFO L93 Difference]: Finished difference Result 265 states and 350 transitions. [2022-11-18 20:34:51,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:34:51,318 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.9375) internal successors, (126), 31 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 74 [2022-11-18 20:34:51,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:51,322 INFO L225 Difference]: With dead ends: 265 [2022-11-18 20:34:51,322 INFO L226 Difference]: Without dead ends: 253 [2022-11-18 20:34:51,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 136 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2022-11-18 20:34:51,328 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 383 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:51,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1412 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2231 Invalid, 0 Unknown, 267 Unchecked, 2.8s Time] [2022-11-18 20:34:51,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-18 20:34:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 229. [2022-11-18 20:34:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 166 states have (on average 1.1746987951807228) internal successors, (195), 168 states have internal predecessors, (195), 44 states have call successors, (44), 18 states have call predecessors, (44), 18 states have return successors, (68), 42 states have call predecessors, (68), 43 states have call successors, (68) [2022-11-18 20:34:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 307 transitions. [2022-11-18 20:34:51,355 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 307 transitions. Word has length 74 [2022-11-18 20:34:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:51,356 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 307 transitions. [2022-11-18 20:34:51,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.9375) internal successors, (126), 31 states have internal predecessors, (126), 7 states have call successors, (19), 5 states have call predecessors, (19), 7 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-18 20:34:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 307 transitions. [2022-11-18 20:34:51,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:34:51,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:51,358 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:51,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:51,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:34:51,568 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:51,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1710014025, now seen corresponding path program 1 times [2022-11-18 20:34:51,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:51,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676559254] [2022-11-18 20:34:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:51,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:51,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:34:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:34:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:34:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:34:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676559254] [2022-11-18 20:34:52,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676559254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:52,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084038167] [2022-11-18 20:34:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:52,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:52,653 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:52,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:34:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:53,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:34:53,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:53,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:34:53,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084038167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:53,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:34:53,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-11-18 20:34:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568683485] [2022-11-18 20:34:53,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:53,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:34:53,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:53,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:34:53,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:34:53,322 INFO L87 Difference]: Start difference. First operand 229 states and 307 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 20:34:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:53,585 INFO L93 Difference]: Finished difference Result 410 states and 556 transitions. [2022-11-18 20:34:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:34:53,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 78 [2022-11-18 20:34:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:53,588 INFO L225 Difference]: With dead ends: 410 [2022-11-18 20:34:53,588 INFO L226 Difference]: Without dead ends: 232 [2022-11-18 20:34:53,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:34:53,590 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 300 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 543 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:34:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-18 20:34:53,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-11-18 20:34:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 168 states have (on average 1.1726190476190477) internal successors, (197), 171 states have internal predecessors, (197), 44 states have call successors, (44), 18 states have call predecessors, (44), 19 states have return successors, (72), 42 states have call predecessors, (72), 43 states have call successors, (72) [2022-11-18 20:34:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 313 transitions. [2022-11-18 20:34:53,630 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 313 transitions. Word has length 78 [2022-11-18 20:34:53,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:53,630 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 313 transitions. [2022-11-18 20:34:53,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 20:34:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 313 transitions. [2022-11-18 20:34:53,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:34:53,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:53,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:53,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:53,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:53,842 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:53,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:53,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1707972510, now seen corresponding path program 1 times [2022-11-18 20:34:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:53,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890359110] [2022-11-18 20:34:53,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:34:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890359110] [2022-11-18 20:34:54,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890359110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:54,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:54,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:34:54,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597261425] [2022-11-18 20:34:54,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:54,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:34:54,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:34:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:34:54,780 INFO L87 Difference]: Start difference. First operand 232 states and 313 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:55,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:55,794 INFO L93 Difference]: Finished difference Result 249 states and 329 transitions. [2022-11-18 20:34:55,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:34:55,795 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 76 [2022-11-18 20:34:55,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:55,797 INFO L225 Difference]: With dead ends: 249 [2022-11-18 20:34:55,797 INFO L226 Difference]: Without dead ends: 229 [2022-11-18 20:34:55,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:34:55,798 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 162 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:55,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1053 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:34:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-18 20:34:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 219. [2022-11-18 20:34:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 159 states have (on average 1.169811320754717) internal successors, (186), 162 states have internal predecessors, (186), 41 states have call successors, (41), 16 states have call predecessors, (41), 18 states have return successors, (67), 40 states have call predecessors, (67), 40 states have call successors, (67) [2022-11-18 20:34:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 294 transitions. [2022-11-18 20:34:55,820 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 294 transitions. Word has length 76 [2022-11-18 20:34:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:55,820 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 294 transitions. [2022-11-18 20:34:55,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:34:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 294 transitions. [2022-11-18 20:34:55,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:34:55,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:55,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:55,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:34:55,823 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:34:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:55,824 INFO L85 PathProgramCache]: Analyzing trace with hash -992443870, now seen corresponding path program 1 times [2022-11-18 20:34:55,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:55,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554763863] [2022-11-18 20:34:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:34:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:34:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:34:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:34:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:34:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:34:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:34:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:34:58,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:58,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554763863] [2022-11-18 20:34:58,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554763863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:34:58,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:34:58,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:34:58,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056765206] [2022-11-18 20:34:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:34:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:34:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:34:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:34:58,071 INFO L87 Difference]: Start difference. First operand 219 states and 294 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:34:59,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:59,990 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2022-11-18 20:34:59,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:34:59,991 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 76 [2022-11-18 20:34:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:59,993 INFO L225 Difference]: With dead ends: 236 [2022-11-18 20:34:59,993 INFO L226 Difference]: Without dead ends: 208 [2022-11-18 20:34:59,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:34:59,994 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 238 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 2033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:59,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 1218 Invalid, 2033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:34:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-18 20:35:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 187. [2022-11-18 20:35:00,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 134 states have (on average 1.1791044776119404) internal successors, (158), 138 states have internal predecessors, (158), 36 states have call successors, (36), 13 states have call predecessors, (36), 16 states have return successors, (59), 35 states have call predecessors, (59), 35 states have call successors, (59) [2022-11-18 20:35:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 253 transitions. [2022-11-18 20:35:00,013 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 253 transitions. Word has length 76 [2022-11-18 20:35:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:00,014 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 253 transitions. [2022-11-18 20:35:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 12 states have internal predecessors, (58), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:35:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 253 transitions. [2022-11-18 20:35:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:35:00,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:00,015 INFO L195 NwaCegarLoop]: trace histogram [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 20:35:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:35:00,016 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1537117189, now seen corresponding path program 1 times [2022-11-18 20:35:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560280469] [2022-11-18 20:35:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:00,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:35:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:35:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 20:35:00,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:00,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560280469] [2022-11-18 20:35:00,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560280469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:00,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:00,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:35:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252836679] [2022-11-18 20:35:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:00,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:35:00,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:00,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:35:00,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:00,488 INFO L87 Difference]: Start difference. First operand 187 states and 253 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:35:01,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:01,248 INFO L93 Difference]: Finished difference Result 266 states and 341 transitions. [2022-11-18 20:35:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:35:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2022-11-18 20:35:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:01,250 INFO L225 Difference]: With dead ends: 266 [2022-11-18 20:35:01,251 INFO L226 Difference]: Without dead ends: 204 [2022-11-18 20:35:01,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:35:01,252 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 138 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:01,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 679 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:35:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-18 20:35:01,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 188. [2022-11-18 20:35:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 135 states have (on average 1.1777777777777778) internal successors, (159), 139 states have internal predecessors, (159), 36 states have call successors, (36), 13 states have call predecessors, (36), 16 states have return successors, (59), 35 states have call predecessors, (59), 35 states have call successors, (59) [2022-11-18 20:35:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 254 transitions. [2022-11-18 20:35:01,287 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 254 transitions. Word has length 89 [2022-11-18 20:35:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:01,288 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 254 transitions. [2022-11-18 20:35:01,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:35:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 254 transitions. [2022-11-18 20:35:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 20:35:01,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:01,297 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:01,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:35:01,298 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:01,298 INFO L85 PathProgramCache]: Analyzing trace with hash 917754153, now seen corresponding path program 1 times [2022-11-18 20:35:01,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:01,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337284375] [2022-11-18 20:35:01,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:35:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:35:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 20:35:01,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:01,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337284375] [2022-11-18 20:35:01,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337284375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:01,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:01,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:35:01,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513512948] [2022-11-18 20:35:01,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:01,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:35:01,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:01,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:35:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:35:01,720 INFO L87 Difference]: Start difference. First operand 188 states and 254 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:35:02,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:02,204 INFO L93 Difference]: Finished difference Result 257 states and 331 transitions. [2022-11-18 20:35:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:02,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2022-11-18 20:35:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:02,206 INFO L225 Difference]: With dead ends: 257 [2022-11-18 20:35:02,206 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 20:35:02,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:02,207 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 113 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:02,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 480 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:35:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 20:35:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 193. [2022-11-18 20:35:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 143 states have internal predecessors, (163), 36 states have call successors, (36), 13 states have call predecessors, (36), 17 states have return successors, (60), 36 states have call predecessors, (60), 35 states have call successors, (60) [2022-11-18 20:35:02,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 259 transitions. [2022-11-18 20:35:02,226 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 259 transitions. Word has length 90 [2022-11-18 20:35:02,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:02,227 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 259 transitions. [2022-11-18 20:35:02,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:35:02,227 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 259 transitions. [2022-11-18 20:35:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 20:35:02,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:02,230 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:35:02,230 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:02,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash -381488286, now seen corresponding path program 1 times [2022-11-18 20:35:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713334211] [2022-11-18 20:35:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:35:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:35:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:35:02,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:02,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713334211] [2022-11-18 20:35:02,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713334211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:02,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:02,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:35:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413554627] [2022-11-18 20:35:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:02,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:35:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:02,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:35:02,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:02,974 INFO L87 Difference]: Start difference. First operand 193 states and 259 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 20:35:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:03,890 INFO L93 Difference]: Finished difference Result 208 states and 274 transitions. [2022-11-18 20:35:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 96 [2022-11-18 20:35:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:03,892 INFO L225 Difference]: With dead ends: 208 [2022-11-18 20:35:03,893 INFO L226 Difference]: Without dead ends: 206 [2022-11-18 20:35:03,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:35:03,894 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 98 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:03,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 838 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:35:03,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-18 20:35:03,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 198. [2022-11-18 20:35:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.1690140845070423) internal successors, (166), 146 states have internal predecessors, (166), 37 states have call successors, (37), 14 states have call predecessors, (37), 18 states have return successors, (61), 37 states have call predecessors, (61), 36 states have call successors, (61) [2022-11-18 20:35:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2022-11-18 20:35:03,920 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 96 [2022-11-18 20:35:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:03,920 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2022-11-18 20:35:03,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 20:35:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2022-11-18 20:35:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:35:03,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:03,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 20:35:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:35:03,925 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:03,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2050117184, now seen corresponding path program 1 times [2022-11-18 20:35:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:03,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150599360] [2022-11-18 20:35:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:35:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:35:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:05,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:35:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:35:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150599360] [2022-11-18 20:35:05,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150599360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:05,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841301430] [2022-11-18 20:35:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:05,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:05,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:05,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:05,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:35:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:05,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2641 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:35:05,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:35:05,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:05,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841301430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:05,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:05,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-18 20:35:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113151629] [2022-11-18 20:35:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:05,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:35:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:35:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:35:05,790 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:06,116 INFO L93 Difference]: Finished difference Result 335 states and 444 transitions. [2022-11-18 20:35:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:35:06,119 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 97 [2022-11-18 20:35:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:06,121 INFO L225 Difference]: With dead ends: 335 [2022-11-18 20:35:06,121 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 20:35:06,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:35:06,123 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 324 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:06,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 629 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:35:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 20:35:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2022-11-18 20:35:06,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 143 states have internal predecessors, (163), 37 states have call successors, (37), 14 states have call predecessors, (37), 17 states have return successors, (57), 37 states have call predecessors, (57), 36 states have call successors, (57) [2022-11-18 20:35:06,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 257 transitions. [2022-11-18 20:35:06,144 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 257 transitions. Word has length 97 [2022-11-18 20:35:06,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:06,145 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 257 transitions. [2022-11-18 20:35:06,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 states have internal predecessors, (66), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:06,145 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 257 transitions. [2022-11-18 20:35:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 20:35:06,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:06,147 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:06,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:06,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:06,358 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:06,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:06,358 INFO L85 PathProgramCache]: Analyzing trace with hash -37945624, now seen corresponding path program 1 times [2022-11-18 20:35:06,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:06,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803181680] [2022-11-18 20:35:06,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:07,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:35:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:35:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:35:08,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:08,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803181680] [2022-11-18 20:35:08,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803181680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:08,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491305214] [2022-11-18 20:35:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:08,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:08,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:08,007 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:08,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:35:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:08,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 2626 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:35:08,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:08,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:35:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:09,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:09,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491305214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:09,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:09,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 26 [2022-11-18 20:35:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367975547] [2022-11-18 20:35:09,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:09,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:35:09,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:35:09,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:35:09,975 INFO L87 Difference]: Start difference. First operand 195 states and 257 transitions. Second operand has 26 states, 25 states have (on average 5.24) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-18 20:35:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:14,031 INFO L93 Difference]: Finished difference Result 574 states and 853 transitions. [2022-11-18 20:35:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:35:14,032 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.24) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) Word has length 100 [2022-11-18 20:35:14,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:14,036 INFO L225 Difference]: With dead ends: 574 [2022-11-18 20:35:14,036 INFO L226 Difference]: Without dead ends: 408 [2022-11-18 20:35:14,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=366, Invalid=2714, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 20:35:14,038 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 387 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 3380 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 3575 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 859 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:14,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 3575 Invalid, 4417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3380 Invalid, 0 Unknown, 859 Unchecked, 3.0s Time] [2022-11-18 20:35:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-18 20:35:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 221. [2022-11-18 20:35:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 163 states have (on average 1.1595092024539877) internal successors, (189), 168 states have internal predecessors, (189), 37 states have call successors, (37), 15 states have call predecessors, (37), 20 states have return successors, (62), 37 states have call predecessors, (62), 36 states have call successors, (62) [2022-11-18 20:35:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 288 transitions. [2022-11-18 20:35:14,073 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 288 transitions. Word has length 100 [2022-11-18 20:35:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:14,074 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 288 transitions. [2022-11-18 20:35:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.24) internal successors, (131), 21 states have internal predecessors, (131), 10 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-18 20:35:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 288 transitions. [2022-11-18 20:35:14,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:35:14,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:14,076 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:14,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:14,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:35:14,285 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1945195624, now seen corresponding path program 1 times [2022-11-18 20:35:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:14,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115882930] [2022-11-18 20:35:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:14,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:14,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:35:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:35:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:35:15,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115882930] [2022-11-18 20:35:15,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115882930] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:15,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047996995] [2022-11-18 20:35:15,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:15,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:15,083 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:15,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:35:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 20:35:15,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:15,769 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 20:35:15,775 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 20:35:15,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:35:15,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:35:16,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:35:16,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-18 20:35:16,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:35:16,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:16,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-18 20:35:16,309 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:35:16,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:16,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047996995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:16,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:16,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-11-18 20:35:16,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122637030] [2022-11-18 20:35:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:16,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:35:16,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:16,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:35:16,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:35:16,312 INFO L87 Difference]: Start difference. First operand 221 states and 288 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:16,577 INFO L93 Difference]: Finished difference Result 530 states and 719 transitions. [2022-11-18 20:35:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 104 [2022-11-18 20:35:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:16,580 INFO L225 Difference]: With dead ends: 530 [2022-11-18 20:35:16,581 INFO L226 Difference]: Without dead ends: 317 [2022-11-18 20:35:16,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:35:16,583 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 66 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:16,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1124 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-18 20:35:16,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-18 20:35:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 246. [2022-11-18 20:35:16,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 183 states have (on average 1.1420765027322404) internal successors, (209), 188 states have internal predecessors, (209), 40 states have call successors, (40), 18 states have call predecessors, (40), 22 states have return successors, (65), 39 states have call predecessors, (65), 39 states have call successors, (65) [2022-11-18 20:35:16,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 314 transitions. [2022-11-18 20:35:16,615 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 314 transitions. Word has length 104 [2022-11-18 20:35:16,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:16,616 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 314 transitions. [2022-11-18 20:35:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:16,616 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 314 transitions. [2022-11-18 20:35:16,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 20:35:16,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:16,618 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:16,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:16,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 20:35:16,829 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:16,829 INFO L85 PathProgramCache]: Analyzing trace with hash 34153066, now seen corresponding path program 1 times [2022-11-18 20:35:16,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:16,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607759707] [2022-11-18 20:35:16,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:16,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:35:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:35:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 20:35:17,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:17,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607759707] [2022-11-18 20:35:17,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607759707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:17,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476073806] [2022-11-18 20:35:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:17,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:17,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:17,580 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:17,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:35:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:18,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-18 20:35:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:18,214 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 20:35:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 29 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:19,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:21,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476073806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:21,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:21,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 25 [2022-11-18 20:35:21,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662430310] [2022-11-18 20:35:21,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:35:21,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:21,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:35:21,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:35:21,899 INFO L87 Difference]: Start difference. First operand 246 states and 314 transitions. Second operand has 25 states, 24 states have (on average 5.416666666666667) internal successors, (130), 20 states have internal predecessors, (130), 8 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-18 20:35:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:26,146 INFO L93 Difference]: Finished difference Result 482 states and 608 transitions. [2022-11-18 20:35:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:35:26,147 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.416666666666667) internal successors, (130), 20 states have internal predecessors, (130), 8 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 104 [2022-11-18 20:35:26,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:26,149 INFO L225 Difference]: With dead ends: 482 [2022-11-18 20:35:26,149 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 20:35:26,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=601, Invalid=3389, Unknown=42, NotChecked=0, Total=4032 [2022-11-18 20:35:26,152 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 228 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 377 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:26,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1336 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1749 Invalid, 0 Unknown, 377 Unchecked, 1.6s Time] [2022-11-18 20:35:26,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 20:35:26,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 246. [2022-11-18 20:35:26,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 184 states have (on average 1.1304347826086956) internal successors, (208), 187 states have internal predecessors, (208), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (63), 39 states have call predecessors, (63), 39 states have call successors, (63) [2022-11-18 20:35:26,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 311 transitions. [2022-11-18 20:35:26,184 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 311 transitions. Word has length 104 [2022-11-18 20:35:26,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:26,185 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 311 transitions. [2022-11-18 20:35:26,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.416666666666667) internal successors, (130), 20 states have internal predecessors, (130), 8 states have call successors, (20), 7 states have call predecessors, (20), 6 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-18 20:35:26,185 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 311 transitions. [2022-11-18 20:35:26,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:35:26,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:26,187 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:26,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:26,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:35:26,398 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:26,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash -24960513, now seen corresponding path program 1 times [2022-11-18 20:35:26,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:26,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987650614] [2022-11-18 20:35:26,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:26,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:35:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:35:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:35:28,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:28,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987650614] [2022-11-18 20:35:28,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987650614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:28,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338348405] [2022-11-18 20:35:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:28,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:28,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:28,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:35:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:29,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 20:35:29,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:29,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:30,105 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 29 treesize of output 17 [2022-11-18 20:35:30,238 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 20:35:30,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 25 [2022-11-18 20:35:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:35:30,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338348405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:30,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:30,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 23 [2022-11-18 20:35:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935662727] [2022-11-18 20:35:30,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:30,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 20:35:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 20:35:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=431, Unknown=1, NotChecked=0, Total=506 [2022-11-18 20:35:30,292 INFO L87 Difference]: Start difference. First operand 246 states and 311 transitions. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 18 states have internal predecessors, (145), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-18 20:35:33,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:33,545 INFO L93 Difference]: Finished difference Result 553 states and 741 transitions. [2022-11-18 20:35:33,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:35:33,546 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 18 states have internal predecessors, (145), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) Word has length 106 [2022-11-18 20:35:33,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:33,548 INFO L225 Difference]: With dead ends: 553 [2022-11-18 20:35:33,548 INFO L226 Difference]: Without dead ends: 365 [2022-11-18 20:35:33,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 223 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=269, Invalid=1208, Unknown=5, NotChecked=0, Total=1482 [2022-11-18 20:35:33,550 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 257 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 828 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:33,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1840 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1829 Invalid, 0 Unknown, 828 Unchecked, 2.2s Time] [2022-11-18 20:35:33,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-18 20:35:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 273. [2022-11-18 20:35:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 207 states have (on average 1.1159420289855073) internal successors, (231), 210 states have internal predecessors, (231), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (65), 41 states have call predecessors, (65), 41 states have call successors, (65) [2022-11-18 20:35:33,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 338 transitions. [2022-11-18 20:35:33,589 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 338 transitions. Word has length 106 [2022-11-18 20:35:33,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:33,590 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 338 transitions. [2022-11-18 20:35:33,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 18 states have internal predecessors, (145), 7 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (19), 5 states have call predecessors, (19), 7 states have call successors, (19) [2022-11-18 20:35:33,590 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 338 transitions. [2022-11-18 20:35:33,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:35:33,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:33,592 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:33,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:33,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:35:33,801 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:33,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:33,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1914201533, now seen corresponding path program 1 times [2022-11-18 20:35:33,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:33,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491171542] [2022-11-18 20:35:33,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:33,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:35:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:35:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:35:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:35:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:35:35,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:35:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 20:35:35,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:35,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491171542] [2022-11-18 20:35:35,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491171542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:35,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:35,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:35:35,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752298674] [2022-11-18 20:35:35,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:35,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:35:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:35:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:35,571 INFO L87 Difference]: Start difference. First operand 273 states and 338 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:36,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:36,601 INFO L93 Difference]: Finished difference Result 485 states and 607 transitions. [2022-11-18 20:35:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:36,604 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 106 [2022-11-18 20:35:36,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:36,606 INFO L225 Difference]: With dead ends: 485 [2022-11-18 20:35:36,606 INFO L226 Difference]: Without dead ends: 255 [2022-11-18 20:35:36,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:35:36,608 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 134 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:36,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 635 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:35:36,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-18 20:35:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 248. [2022-11-18 20:35:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 190 states have internal predecessors, (210), 39 states have call successors, (39), 18 states have call predecessors, (39), 21 states have return successors, (62), 39 states have call predecessors, (62), 38 states have call successors, (62) [2022-11-18 20:35:36,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 311 transitions. [2022-11-18 20:35:36,640 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 311 transitions. Word has length 106 [2022-11-18 20:35:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:36,640 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 311 transitions. [2022-11-18 20:35:36,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 5 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 20:35:36,641 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 311 transitions. [2022-11-18 20:35:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 20:35:36,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:36,642 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:36,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:35:36,642 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1961555517, now seen corresponding path program 1 times [2022-11-18 20:35:36,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:36,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418264209] [2022-11-18 20:35:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:36,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:35:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:35:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:35:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:35:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:35:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:35:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:35:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:38,881 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:35:38,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418264209] [2022-11-18 20:35:38,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418264209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339360798] [2022-11-18 20:35:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:38,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:38,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:38,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:38,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:35:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:39,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 20:35:39,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:39,573 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 20:35:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:40,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:42,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339360798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:42,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:42,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 25 [2022-11-18 20:35:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323412407] [2022-11-18 20:35:42,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:42,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:35:42,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:35:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:35:42,702 INFO L87 Difference]: Start difference. First operand 248 states and 311 transitions. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 20 states have internal predecessors, (132), 9 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-18 20:35:47,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:47,003 INFO L93 Difference]: Finished difference Result 584 states and 807 transitions. [2022-11-18 20:35:47,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:35:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 20 states have internal predecessors, (132), 9 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 111 [2022-11-18 20:35:47,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:47,007 INFO L225 Difference]: With dead ends: 584 [2022-11-18 20:35:47,008 INFO L226 Difference]: Without dead ends: 397 [2022-11-18 20:35:47,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=399, Invalid=2350, Unknown=7, NotChecked=0, Total=2756 [2022-11-18 20:35:47,010 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 360 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 3424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 670 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:47,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 2249 Invalid, 3424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2596 Invalid, 0 Unknown, 670 Unchecked, 2.9s Time] [2022-11-18 20:35:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-18 20:35:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 265. [2022-11-18 20:35:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 201 states have (on average 1.1293532338308458) internal successors, (227), 204 states have internal predecessors, (227), 41 states have call successors, (41), 19 states have call predecessors, (41), 22 states have return successors, (65), 41 states have call predecessors, (65), 40 states have call successors, (65) [2022-11-18 20:35:47,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 333 transitions. [2022-11-18 20:35:47,056 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 333 transitions. Word has length 111 [2022-11-18 20:35:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:47,057 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 333 transitions. [2022-11-18 20:35:47,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 20 states have internal predecessors, (132), 9 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-11-18 20:35:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 333 transitions. [2022-11-18 20:35:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-18 20:35:47,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:47,059 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:35:47,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:47,269 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:35:47,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1339854717, now seen corresponding path program 1 times [2022-11-18 20:35:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:47,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130499644] [2022-11-18 20:35:47,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:47,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:35:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:35:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:35:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:35:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:35:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:35:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:35:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:35:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:35:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:35:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:35:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130499644] [2022-11-18 20:35:51,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130499644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:51,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915934344] [2022-11-18 20:35:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:51,400 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:51,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:35:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:52,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:35:52,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:52,120 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 20:35:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:35:53,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:54,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915934344] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:54,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:54,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2022-11-18 20:35:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849934221] [2022-11-18 20:35:54,930 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:54,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:35:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:35:54,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1003, Unknown=2, NotChecked=0, Total=1122 [2022-11-18 20:35:54,932 INFO L87 Difference]: Start difference. First operand 265 states and 333 transitions. Second operand has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 24 states have internal predecessors, (118), 8 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-18 20:36:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:00,304 INFO L93 Difference]: Finished difference Result 408 states and 524 transitions. [2022-11-18 20:36:00,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:36:00,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 24 states have internal predecessors, (118), 8 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) Word has length 111 [2022-11-18 20:36:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:00,307 INFO L225 Difference]: With dead ends: 408 [2022-11-18 20:36:00,308 INFO L226 Difference]: Without dead ends: 345 [2022-11-18 20:36:00,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=428, Invalid=2419, Unknown=15, NotChecked=0, Total=2862 [2022-11-18 20:36:00,309 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 293 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 604 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:00,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 1801 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2508 Invalid, 0 Unknown, 604 Unchecked, 3.0s Time] [2022-11-18 20:36:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-18 20:36:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 267. [2022-11-18 20:36:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (59), 41 states have call predecessors, (59), 40 states have call successors, (59) [2022-11-18 20:36:00,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2022-11-18 20:36:00,355 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 111 [2022-11-18 20:36:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:00,355 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2022-11-18 20:36:00,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.37037037037037) internal successors, (118), 24 states have internal predecessors, (118), 8 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (16), 6 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-18 20:36:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2022-11-18 20:36:00,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:36:00,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:00,357 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:00,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:00,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 20:36:00,566 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 535434050, now seen corresponding path program 1 times [2022-11-18 20:36:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:00,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448638355] [2022-11-18 20:36:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:00,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:36:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:36:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,274 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-18 20:36:01,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:01,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448638355] [2022-11-18 20:36:01,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448638355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:01,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:01,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:36:01,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196232175] [2022-11-18 20:36:01,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:01,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:36:01,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:01,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:36:01,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:36:01,276 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:02,303 INFO L93 Difference]: Finished difference Result 282 states and 345 transitions. [2022-11-18 20:36:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:36:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 113 [2022-11-18 20:36:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:02,307 INFO L225 Difference]: With dead ends: 282 [2022-11-18 20:36:02,307 INFO L226 Difference]: Without dead ends: 280 [2022-11-18 20:36:02,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:36:02,308 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 223 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:02,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 973 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:36:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-18 20:36:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 267. [2022-11-18 20:36:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (59), 41 states have call predecessors, (59), 40 states have call successors, (59) [2022-11-18 20:36:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 330 transitions. [2022-11-18 20:36:02,384 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 330 transitions. Word has length 113 [2022-11-18 20:36:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 330 transitions. [2022-11-18 20:36:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.083333333333333) internal successors, (61), 8 states have internal predecessors, (61), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 330 transitions. [2022-11-18 20:36:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-18 20:36:02,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:02,388 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:02,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:36:02,388 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash 782483972, now seen corresponding path program 1 times [2022-11-18 20:36:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:02,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070897611] [2022-11-18 20:36:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:02,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:36:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:36:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:36:04,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:04,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070897611] [2022-11-18 20:36:04,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070897611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:04,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:04,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 20:36:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401851291] [2022-11-18 20:36:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:36:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:36:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:36:04,663 INFO L87 Difference]: Start difference. First operand 267 states and 330 transitions. Second operand has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 14 states have internal predecessors, (71), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-18 20:36:07,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:07,260 INFO L93 Difference]: Finished difference Result 334 states and 434 transitions. [2022-11-18 20:36:07,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:36:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 14 states have internal predecessors, (71), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 113 [2022-11-18 20:36:07,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:07,262 INFO L225 Difference]: With dead ends: 334 [2022-11-18 20:36:07,262 INFO L226 Difference]: Without dead ends: 332 [2022-11-18 20:36:07,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:36:07,263 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 273 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:07,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1662 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:36:07,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-18 20:36:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266. [2022-11-18 20:36:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (58), 40 states have call predecessors, (58), 39 states have call successors, (58) [2022-11-18 20:36:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 328 transitions. [2022-11-18 20:36:07,310 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 328 transitions. Word has length 113 [2022-11-18 20:36:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:07,311 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 328 transitions. [2022-11-18 20:36:07,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.736842105263158) internal successors, (71), 14 states have internal predecessors, (71), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-18 20:36:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 328 transitions. [2022-11-18 20:36:07,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 20:36:07,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:07,313 INFO L195 NwaCegarLoop]: trace histogram [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 20:36:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:36:07,313 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash 47539994, now seen corresponding path program 1 times [2022-11-18 20:36:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047655870] [2022-11-18 20:36:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:36:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 20:36:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-18 20:36:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:07,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047655870] [2022-11-18 20:36:07,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047655870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:07,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:07,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:36:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499068081] [2022-11-18 20:36:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:36:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:07,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:36:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:36:07,714 INFO L87 Difference]: Start difference. First operand 266 states and 328 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:08,483 INFO L93 Difference]: Finished difference Result 344 states and 415 transitions. [2022-11-18 20:36:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:36:08,483 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 114 [2022-11-18 20:36:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:08,485 INFO L225 Difference]: With dead ends: 344 [2022-11-18 20:36:08,486 INFO L226 Difference]: Without dead ends: 285 [2022-11-18 20:36:08,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:36:08,487 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 185 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:08,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 686 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:36:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-11-18 20:36:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 266. [2022-11-18 20:36:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 204 states have (on average 1.1274509803921569) internal successors, (230), 206 states have internal predecessors, (230), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (58), 40 states have call predecessors, (58), 39 states have call successors, (58) [2022-11-18 20:36:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 328 transitions. [2022-11-18 20:36:08,536 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 328 transitions. Word has length 114 [2022-11-18 20:36:08,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:08,536 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 328 transitions. [2022-11-18 20:36:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 328 transitions. [2022-11-18 20:36:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 20:36:08,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:08,538 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:36:08,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:36:08,539 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1849063430, now seen corresponding path program 1 times [2022-11-18 20:36:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414122563] [2022-11-18 20:36:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:08,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:11,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:11,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:36:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:36:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:36:11,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414122563] [2022-11-18 20:36:11,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414122563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:11,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909710926] [2022-11-18 20:36:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:11,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:11,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:11,983 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:36:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:12,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 20:36:12,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:12,594 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 20:36:12,905 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:36:12,906 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 20:36:13,541 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:36:13,541 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 20:36:13,842 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:36:13,843 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 20:36:13,970 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1501 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1501) |c_#memory_int|)) is different from true [2022-11-18 20:36:13,981 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 17 treesize of output 19 [2022-11-18 20:36:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:22,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:25,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909710926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:25,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:25,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 41 [2022-11-18 20:36:25,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900493498] [2022-11-18 20:36:25,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:25,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:36:25,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:25,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:36:25,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1715, Unknown=10, NotChecked=84, Total=1980 [2022-11-18 20:36:25,385 INFO L87 Difference]: Start difference. First operand 266 states and 328 transitions. Second operand has 41 states, 39 states have (on average 4.435897435897436) internal successors, (173), 36 states have internal predecessors, (173), 14 states have call successors, (22), 10 states have call predecessors, (22), 12 states have return successors, (21), 12 states have call predecessors, (21), 13 states have call successors, (21) [2022-11-18 20:36:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:34,212 INFO L93 Difference]: Finished difference Result 496 states and 658 transitions. [2022-11-18 20:36:34,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:36:34,213 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 4.435897435897436) internal successors, (173), 36 states have internal predecessors, (173), 14 states have call successors, (22), 10 states have call predecessors, (22), 12 states have return successors, (21), 12 states have call predecessors, (21), 13 states have call successors, (21) Word has length 116 [2022-11-18 20:36:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:34,216 INFO L225 Difference]: With dead ends: 496 [2022-11-18 20:36:34,216 INFO L226 Difference]: Without dead ends: 420 [2022-11-18 20:36:34,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 155 SyntacticMatches, 14 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=704, Invalid=5419, Unknown=43, NotChecked=154, Total=6320 [2022-11-18 20:36:34,219 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 478 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1638 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:34,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 2422 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2138 Invalid, 0 Unknown, 1638 Unchecked, 2.3s Time] [2022-11-18 20:36:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-18 20:36:34,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 401. [2022-11-18 20:36:34,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 303 states have (on average 1.1452145214521452) internal successors, (347), 308 states have internal predecessors, (347), 69 states have call successors, (69), 23 states have call predecessors, (69), 28 states have return successors, (123), 69 states have call predecessors, (123), 68 states have call successors, (123) [2022-11-18 20:36:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 539 transitions. [2022-11-18 20:36:34,310 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 539 transitions. Word has length 116 [2022-11-18 20:36:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 539 transitions. [2022-11-18 20:36:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 4.435897435897436) internal successors, (173), 36 states have internal predecessors, (173), 14 states have call successors, (22), 10 states have call predecessors, (22), 12 states have return successors, (21), 12 states have call predecessors, (21), 13 states have call successors, (21) [2022-11-18 20:36:34,312 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 539 transitions. [2022-11-18 20:36:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 20:36:34,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:34,314 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:36:34,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-18 20:36:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:34,523 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1166040188, now seen corresponding path program 1 times [2022-11-18 20:36:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:34,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617458544] [2022-11-18 20:36:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:36,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:36:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:36:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:37,398 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:36:37,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617458544] [2022-11-18 20:36:37,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617458544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:37,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252088772] [2022-11-18 20:36:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:37,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:37,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:37,401 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:37,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:36:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:38,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-18 20:36:38,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:38,050 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 20:36:38,510 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 20:36:38,567 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 20:36:38,807 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:36:38,808 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 20:36:38,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 20:36:39,384 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:36:39,384 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 20:36:39,727 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:36:39,729 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 20:36:39,869 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1596 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1596))) is different from true [2022-11-18 20:36:39,880 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 14 treesize of output 16 [2022-11-18 20:36:39,971 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 15 treesize of output 7 [2022-11-18 20:36:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:36:40,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:36:40,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252088772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:40,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:36:40,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [22] total 42 [2022-11-18 20:36:40,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888381201] [2022-11-18 20:36:40,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:40,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:36:40,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:40,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:36:40,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1510, Unknown=1, NotChecked=78, Total=1722 [2022-11-18 20:36:40,012 INFO L87 Difference]: Start difference. First operand 401 states and 539 transitions. Second operand has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 20:36:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:40,971 INFO L93 Difference]: Finished difference Result 516 states and 662 transitions. [2022-11-18 20:36:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:36:40,971 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) Word has length 116 [2022-11-18 20:36:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:40,974 INFO L225 Difference]: With dead ends: 516 [2022-11-18 20:36:40,974 INFO L226 Difference]: Without dead ends: 429 [2022-11-18 20:36:40,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=170, Invalid=1995, Unknown=1, NotChecked=90, Total=2256 [2022-11-18 20:36:40,975 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 109 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 1298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:40,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1181 Invalid, 1298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 736 Invalid, 0 Unknown, 519 Unchecked, 0.7s Time] [2022-11-18 20:36:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-18 20:36:41,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 423. [2022-11-18 20:36:41,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 323 states have (on average 1.13312693498452) internal successors, (366), 329 states have internal predecessors, (366), 69 states have call successors, (69), 24 states have call predecessors, (69), 30 states have return successors, (122), 69 states have call predecessors, (122), 68 states have call successors, (122) [2022-11-18 20:36:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 557 transitions. [2022-11-18 20:36:41,050 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 557 transitions. Word has length 116 [2022-11-18 20:36:41,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:41,051 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 557 transitions. [2022-11-18 20:36:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 20 states have internal predecessors, (77), 8 states have call successors, (12), 7 states have call predecessors, (12), 8 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 20:36:41,051 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 557 transitions. [2022-11-18 20:36:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 20:36:41,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:41,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:41,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:36:41,255 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:41,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:41,255 INFO L85 PathProgramCache]: Analyzing trace with hash -828439065, now seen corresponding path program 1 times [2022-11-18 20:36:41,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:41,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023950341] [2022-11-18 20:36:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:41,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:36:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:36:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:36:42,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:42,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023950341] [2022-11-18 20:36:42,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023950341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:42,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:42,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:36:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76614960] [2022-11-18 20:36:42,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:42,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:36:42,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:36:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:36:42,040 INFO L87 Difference]: Start difference. First operand 423 states and 557 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:42,963 INFO L93 Difference]: Finished difference Result 441 states and 577 transitions. [2022-11-18 20:36:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:36:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 120 [2022-11-18 20:36:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:42,966 INFO L225 Difference]: With dead ends: 441 [2022-11-18 20:36:42,966 INFO L226 Difference]: Without dead ends: 439 [2022-11-18 20:36:42,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:36:42,967 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 132 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:42,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 785 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:36:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-18 20:36:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 430. [2022-11-18 20:36:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 326 states have (on average 1.1319018404907975) internal successors, (369), 332 states have internal predecessors, (369), 72 states have call successors, (72), 25 states have call predecessors, (72), 31 states have return successors, (125), 72 states have call predecessors, (125), 71 states have call successors, (125) [2022-11-18 20:36:43,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 566 transitions. [2022-11-18 20:36:43,075 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 566 transitions. Word has length 120 [2022-11-18 20:36:43,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:43,076 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 566 transitions. [2022-11-18 20:36:43,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:36:43,076 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 566 transitions. [2022-11-18 20:36:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 20:36:43,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:43,079 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1] [2022-11-18 20:36:43,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 20:36:43,079 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:43,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1063489437, now seen corresponding path program 1 times [2022-11-18 20:36:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:43,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506522319] [2022-11-18 20:36:43,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:36:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:36:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:36:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:36:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:43,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506522319] [2022-11-18 20:36:43,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506522319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293977144] [2022-11-18 20:36:43,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:43,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:43,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:43,620 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:36:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:44,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:36:44,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:36:44,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:36:44,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293977144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:44,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:36:44,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 10 [2022-11-18 20:36:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789306324] [2022-11-18 20:36:44,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:44,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:36:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:44,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:36:44,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:36:44,366 INFO L87 Difference]: Start difference. First operand 430 states and 566 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:36:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:44,475 INFO L93 Difference]: Finished difference Result 612 states and 811 transitions. [2022-11-18 20:36:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:36:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-11-18 20:36:44,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:44,478 INFO L225 Difference]: With dead ends: 612 [2022-11-18 20:36:44,479 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 20:36:44,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:36:44,481 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:44,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1140 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:44,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 20:36:44,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 379. [2022-11-18 20:36:44,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 291 states have (on average 1.1099656357388317) internal successors, (323), 296 states have internal predecessors, (323), 58 states have call successors, (58), 24 states have call predecessors, (58), 29 states have return successors, (95), 58 states have call predecessors, (95), 57 states have call successors, (95) [2022-11-18 20:36:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 476 transitions. [2022-11-18 20:36:44,542 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 476 transitions. Word has length 122 [2022-11-18 20:36:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:44,542 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 476 transitions. [2022-11-18 20:36:44,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-18 20:36:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 476 transitions. [2022-11-18 20:36:44,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 20:36:44,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:44,545 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:36:44,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:44,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:44,756 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:44,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash 19637997, now seen corresponding path program 1 times [2022-11-18 20:36:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:44,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180937768] [2022-11-18 20:36:44,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:36:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:36:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:36:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:36:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:36:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:36:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:36:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:36:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:36:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 34 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 20:36:48,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:48,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180937768] [2022-11-18 20:36:48,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180937768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:48,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697195855] [2022-11-18 20:36:48,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:48,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:48,558 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:48,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:36:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:49,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:36:49,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:49,422 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 20:36:56,202 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1790 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_1790)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 20:36:56,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-18 20:36:58,801 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 20:36:58,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:36:58,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697195855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:58,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:36:58,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [22] total 37 [2022-11-18 20:36:58,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489028528] [2022-11-18 20:36:58,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:58,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:36:58,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:58,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:36:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1160, Unknown=2, NotChecked=68, Total=1332 [2022-11-18 20:36:58,804 INFO L87 Difference]: Start difference. First operand 379 states and 476 transitions. Second operand has 17 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 20:36:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:59,661 INFO L93 Difference]: Finished difference Result 621 states and 794 transitions. [2022-11-18 20:36:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:36:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 124 [2022-11-18 20:36:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:59,663 INFO L225 Difference]: With dead ends: 621 [2022-11-18 20:36:59,663 INFO L226 Difference]: Without dead ends: 428 [2022-11-18 20:36:59,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=125, Invalid=1517, Unknown=2, NotChecked=78, Total=1722 [2022-11-18 20:36:59,664 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 107 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:59,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 908 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 613 Invalid, 0 Unknown, 627 Unchecked, 0.6s Time] [2022-11-18 20:36:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-18 20:36:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 403. [2022-11-18 20:36:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 314 states have (on average 1.1146496815286624) internal successors, (350), 319 states have internal predecessors, (350), 58 states have call successors, (58), 25 states have call predecessors, (58), 30 states have return successors, (87), 58 states have call predecessors, (87), 57 states have call successors, (87) [2022-11-18 20:36:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 495 transitions. [2022-11-18 20:36:59,754 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 495 transitions. Word has length 124 [2022-11-18 20:36:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:59,755 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 495 transitions. [2022-11-18 20:36:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 15 states have internal predecessors, (85), 8 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2022-11-18 20:36:59,755 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 495 transitions. [2022-11-18 20:36:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 20:36:59,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:59,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 20:36:59,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 20:36:59,969 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1185857651, now seen corresponding path program 1 times [2022-11-18 20:36:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:59,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427032801] [2022-11-18 20:36:59,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:59,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:37:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:37:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:37:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:37:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:37:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:37:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:37:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:37:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 20:37:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 20:37:00,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427032801] [2022-11-18 20:37:00,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427032801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:00,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525084193] [2022-11-18 20:37:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:00,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:00,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:00,726 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:00,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:37:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:01,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-18 20:37:01,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:01,428 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 20:37:01,716 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:01,717 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 20:37:01,731 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 20:37:01,937 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:01,937 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 20:37:02,356 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:37:02,356 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 20:37:02,468 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1878 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1878) |c_#memory_int|)) is different from true [2022-11-18 20:37:02,487 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 19 treesize of output 21 [2022-11-18 20:37:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 65 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:37:05,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:07,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525084193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:07,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:37:07,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23] total 30 [2022-11-18 20:37:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013503336] [2022-11-18 20:37:07,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:07,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:37:07,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:37:07,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1066, Unknown=18, NotChecked=66, Total=1260 [2022-11-18 20:37:07,585 INFO L87 Difference]: Start difference. First operand 403 states and 495 transitions. Second operand has 30 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 10 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-18 20:37:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:13,794 INFO L93 Difference]: Finished difference Result 639 states and 828 transitions. [2022-11-18 20:37:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 20:37:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 10 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) Word has length 128 [2022-11-18 20:37:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:13,799 INFO L225 Difference]: With dead ends: 639 [2022-11-18 20:37:13,799 INFO L226 Difference]: Without dead ends: 438 [2022-11-18 20:37:13,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 167 SyntacticMatches, 8 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=263, Invalid=2567, Unknown=36, NotChecked=104, Total=2970 [2022-11-18 20:37:13,801 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 245 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1173 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:13,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1450 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1326 Invalid, 0 Unknown, 1173 Unchecked, 1.2s Time] [2022-11-18 20:37:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-18 20:37:13,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 403. [2022-11-18 20:37:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 313 states have (on average 1.1086261980830672) internal successors, (347), 317 states have internal predecessors, (347), 58 states have call successors, (58), 25 states have call predecessors, (58), 31 states have return successors, (89), 60 states have call predecessors, (89), 57 states have call successors, (89) [2022-11-18 20:37:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 494 transitions. [2022-11-18 20:37:13,880 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 494 transitions. Word has length 128 [2022-11-18 20:37:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:13,881 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 494 transitions. [2022-11-18 20:37:13,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.75) internal successors, (161), 25 states have internal predecessors, (161), 10 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (22), 9 states have call predecessors, (22), 10 states have call successors, (22) [2022-11-18 20:37:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 494 transitions. [2022-11-18 20:37:13,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 20:37:13,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:13,883 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:37:13,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:14,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:37:14,100 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:14,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1458198455, now seen corresponding path program 1 times [2022-11-18 20:37:14,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:14,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106325128] [2022-11-18 20:37:14,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:14,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:37:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:37:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:37:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:37:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:37:15,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:37:15,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:37:15,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:37:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:37:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:37:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:37:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:37:15,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:15,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106325128] [2022-11-18 20:37:15,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106325128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:15,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212698319] [2022-11-18 20:37:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:15,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:15,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:15,707 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 20:37:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 20:37:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:16,454 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 11 treesize of output 7 [2022-11-18 20:37:16,799 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 8 treesize of output 4 [2022-11-18 20:37:17,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:37:17,182 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-18 20:37:17,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-11-18 20:37:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 20:37:17,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:37:17,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212698319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:17,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:37:17,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 20 [2022-11-18 20:37:17,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486200317] [2022-11-18 20:37:17,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:37:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:17,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:37:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:37:17,187 INFO L87 Difference]: Start difference. First operand 403 states and 494 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:37:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:17,948 INFO L93 Difference]: Finished difference Result 486 states and 582 transitions. [2022-11-18 20:37:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:37:17,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-11-18 20:37:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:17,951 INFO L225 Difference]: With dead ends: 486 [2022-11-18 20:37:17,951 INFO L226 Difference]: Without dead ends: 413 [2022-11-18 20:37:17,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 143 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:37:17,953 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 90 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:17,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 894 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 514 Invalid, 0 Unknown, 274 Unchecked, 0.6s Time] [2022-11-18 20:37:17,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-18 20:37:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 406. [2022-11-18 20:37:18,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 315 states have (on average 1.1047619047619048) internal successors, (348), 320 states have internal predecessors, (348), 58 states have call successors, (58), 25 states have call predecessors, (58), 32 states have return successors, (89), 60 states have call predecessors, (89), 57 states have call successors, (89) [2022-11-18 20:37:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 495 transitions. [2022-11-18 20:37:18,049 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 495 transitions. Word has length 131 [2022-11-18 20:37:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:18,050 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 495 transitions. [2022-11-18 20:37:18,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-18 20:37:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 495 transitions. [2022-11-18 20:37:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:37:18,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:18,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:18,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:18,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 20:37:18,262 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash 374394686, now seen corresponding path program 1 times [2022-11-18 20:37:18,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:18,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316463684] [2022-11-18 20:37:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:18,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:37:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:37:20,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:37:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:37:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:37:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:37:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:37:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:37:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:21,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:37:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 44 proven. 30 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:37:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:21,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316463684] [2022-11-18 20:37:21,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316463684] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:21,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423423638] [2022-11-18 20:37:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:21,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:21,653 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 20:37:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:22,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 20:37:22,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:22,358 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 20:37:22,873 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:22,873 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 20:37:22,889 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 20:37:23,078 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:23,079 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 20:37:23,647 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:37:23,647 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 20:37:23,707 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2031 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2031) |c_#memory_int|)) is different from true [2022-11-18 20:37:23,724 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 26 [2022-11-18 20:37:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:37:32,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:33,033 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2034 (Array Int Int))) (not (<= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_2034) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.offset| 16)) 18446744073709551616) 0))) is different from false [2022-11-18 20:37:33,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423423638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:33,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:37:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 37 [2022-11-18 20:37:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660865454] [2022-11-18 20:37:33,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:33,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:37:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:37:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1476, Unknown=9, NotChecked=158, Total=1806 [2022-11-18 20:37:33,038 INFO L87 Difference]: Start difference. First operand 406 states and 495 transitions. Second operand has 37 states, 35 states have (on average 4.857142857142857) internal successors, (170), 34 states have internal predecessors, (170), 10 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-18 20:37:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:40,040 INFO L93 Difference]: Finished difference Result 590 states and 714 transitions. [2022-11-18 20:37:40,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-18 20:37:40,041 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.857142857142857) internal successors, (170), 34 states have internal predecessors, (170), 10 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 130 [2022-11-18 20:37:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:40,043 INFO L225 Difference]: With dead ends: 590 [2022-11-18 20:37:40,043 INFO L226 Difference]: Without dead ends: 482 [2022-11-18 20:37:40,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 172 SyntacticMatches, 11 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=319, Invalid=3208, Unknown=21, NotChecked=234, Total=3782 [2022-11-18 20:37:40,045 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 264 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 2618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1134 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:40,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1910 Invalid, 2618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1321 Invalid, 0 Unknown, 1134 Unchecked, 1.6s Time] [2022-11-18 20:37:40,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-18 20:37:40,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 456. [2022-11-18 20:37:40,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 360 states have (on average 1.1083333333333334) internal successors, (399), 367 states have internal predecessors, (399), 59 states have call successors, (59), 27 states have call predecessors, (59), 36 states have return successors, (97), 61 states have call predecessors, (97), 58 states have call successors, (97) [2022-11-18 20:37:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 555 transitions. [2022-11-18 20:37:40,147 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 555 transitions. Word has length 130 [2022-11-18 20:37:40,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:40,147 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 555 transitions. [2022-11-18 20:37:40,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.857142857142857) internal successors, (170), 34 states have internal predecessors, (170), 10 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-18 20:37:40,148 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 555 transitions. [2022-11-18 20:37:40,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:37:40,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:40,150 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:37:40,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 20:37:40,359 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1834233342, now seen corresponding path program 1 times [2022-11-18 20:37:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:40,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753706298] [2022-11-18 20:37:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:37:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:37:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:37:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:37:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:37:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:37:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:37:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:37:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:37:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:37:43,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753706298] [2022-11-18 20:37:43,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753706298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:43,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290492956] [2022-11-18 20:37:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:43,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:43,512 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:43,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 20:37:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:44,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:37:44,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:44,201 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 20:37:44,658 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:44,658 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 20:37:44,671 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 20:37:45,391 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:37:45,391 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 20:37:45,789 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:37:45,790 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 20:37:45,937 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2122 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2122) |c_#memory_int|)) is different from true [2022-11-18 20:37:45,951 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 17 treesize of output 19 [2022-11-18 20:37:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:37:54,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:55,462 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2125 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_2125) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.offset| 16)) 18446744073709551616) 0))) is different from false [2022-11-18 20:37:55,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290492956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:55,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:37:55,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24] total 41 [2022-11-18 20:37:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797662167] [2022-11-18 20:37:55,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:55,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-18 20:37:55,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:55,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-18 20:37:55,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1820, Unknown=6, NotChecked=174, Total=2162 [2022-11-18 20:37:55,467 INFO L87 Difference]: Start difference. First operand 456 states and 555 transitions. Second operand has 41 states, 38 states have (on average 4.842105263157895) internal successors, (184), 36 states have internal predecessors, (184), 17 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (21), 13 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 20:38:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:06,447 INFO L93 Difference]: Finished difference Result 756 states and 964 transitions. [2022-11-18 20:38:06,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 20:38:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.842105263157895) internal successors, (184), 36 states have internal predecessors, (184), 17 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (21), 13 states have call predecessors, (21), 17 states have call successors, (21) Word has length 130 [2022-11-18 20:38:06,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:06,452 INFO L225 Difference]: With dead ends: 756 [2022-11-18 20:38:06,453 INFO L226 Difference]: Without dead ends: 527 [2022-11-18 20:38:06,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 178 SyntacticMatches, 10 SemanticMatches, 83 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1871 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=619, Invalid=6166, Unknown=29, NotChecked=326, Total=7140 [2022-11-18 20:38:06,456 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 390 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 5319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1855 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:06,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2739 Invalid, 5319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 3241 Invalid, 0 Unknown, 1855 Unchecked, 3.6s Time] [2022-11-18 20:38:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-18 20:38:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 489. [2022-11-18 20:38:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 386 states have (on average 1.116580310880829) internal successors, (431), 395 states have internal predecessors, (431), 66 states have call successors, (66), 27 states have call predecessors, (66), 36 states have return successors, (107), 66 states have call predecessors, (107), 65 states have call successors, (107) [2022-11-18 20:38:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 604 transitions. [2022-11-18 20:38:06,562 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 604 transitions. Word has length 130 [2022-11-18 20:38:06,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:06,562 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 604 transitions. [2022-11-18 20:38:06,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.842105263157895) internal successors, (184), 36 states have internal predecessors, (184), 17 states have call successors, (22), 9 states have call predecessors, (22), 12 states have return successors, (21), 13 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-18 20:38:06,563 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 604 transitions. [2022-11-18 20:38:06,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-18 20:38:06,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:06,565 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:06,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:06,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:06,777 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash -590543802, now seen corresponding path program 1 times [2022-11-18 20:38:06,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:06,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927329571] [2022-11-18 20:38:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:06,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:38:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:38:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:38:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:38:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:38:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:38:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:12,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:38:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 69 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 20:38:13,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:13,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927329571] [2022-11-18 20:38:13,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927329571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:13,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416496037] [2022-11-18 20:38:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:13,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:13,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:13,094 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:13,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 20:38:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:13,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-18 20:38:13,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:13,926 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 20:38:14,143 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2210 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2210) |c_#memory_int|)) is different from true [2022-11-18 20:38:14,154 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 20:38:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 65 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:38:15,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:38:16,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416496037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:16,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:16,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 11] total 49 [2022-11-18 20:38:16,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757388151] [2022-11-18 20:38:16,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:16,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 20:38:16,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 20:38:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2073, Unknown=1, NotChecked=92, Total=2352 [2022-11-18 20:38:16,789 INFO L87 Difference]: Start difference. First operand 489 states and 604 transitions. Second operand has 49 states, 47 states have (on average 4.127659574468085) internal successors, (194), 44 states have internal predecessors, (194), 16 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:38:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:33,637 INFO L93 Difference]: Finished difference Result 695 states and 846 transitions. [2022-11-18 20:38:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 20:38:33,638 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 4.127659574468085) internal successors, (194), 44 states have internal predecessors, (194), 16 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) Word has length 130 [2022-11-18 20:38:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:33,640 INFO L225 Difference]: With dead ends: 695 [2022-11-18 20:38:33,641 INFO L226 Difference]: Without dead ends: 572 [2022-11-18 20:38:33,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1258, Invalid=8783, Unknown=63, NotChecked=198, Total=10302 [2022-11-18 20:38:33,642 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 701 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 5389 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 5389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1077 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:33,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 1965 Invalid, 6848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [382 Valid, 5389 Invalid, 0 Unknown, 1077 Unchecked, 8.0s Time] [2022-11-18 20:38:33,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-18 20:38:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 519. [2022-11-18 20:38:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 416 states have (on average 1.1105769230769231) internal successors, (462), 425 states have internal predecessors, (462), 66 states have call successors, (66), 28 states have call predecessors, (66), 36 states have return successors, (98), 65 states have call predecessors, (98), 65 states have call successors, (98) [2022-11-18 20:38:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 626 transitions. [2022-11-18 20:38:33,785 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 626 transitions. Word has length 130 [2022-11-18 20:38:33,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:33,786 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 626 transitions. [2022-11-18 20:38:33,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 4.127659574468085) internal successors, (194), 44 states have internal predecessors, (194), 16 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (31), 14 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:38:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 626 transitions. [2022-11-18 20:38:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:38:33,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:33,788 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:33,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:38:34,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-18 20:38:34,007 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -167546101, now seen corresponding path program 1 times [2022-11-18 20:38:34,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:34,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356722412] [2022-11-18 20:38:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:34,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:38:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:38:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:38:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:38:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:38:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:38:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:38:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 20:38:35,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356722412] [2022-11-18 20:38:35,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356722412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:35,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:35,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:38:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993759314] [2022-11-18 20:38:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:38:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:38:35,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:38:35,007 INFO L87 Difference]: Start difference. First operand 519 states and 626 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:38:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:36,197 INFO L93 Difference]: Finished difference Result 540 states and 650 transitions. [2022-11-18 20:38:36,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:38:36,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 132 [2022-11-18 20:38:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:36,200 INFO L225 Difference]: With dead ends: 540 [2022-11-18 20:38:36,200 INFO L226 Difference]: Without dead ends: 538 [2022-11-18 20:38:36,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:38:36,201 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 94 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:36,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 994 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:38:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-18 20:38:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 525. [2022-11-18 20:38:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 419 states have (on average 1.1097852028639619) internal successors, (465), 428 states have internal predecessors, (465), 68 states have call successors, (68), 29 states have call predecessors, (68), 37 states have return successors, (100), 67 states have call predecessors, (100), 67 states have call successors, (100) [2022-11-18 20:38:36,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 633 transitions. [2022-11-18 20:38:36,303 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 633 transitions. Word has length 132 [2022-11-18 20:38:36,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:36,303 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 633 transitions. [2022-11-18 20:38:36,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 8 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-18 20:38:36,304 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 633 transitions. [2022-11-18 20:38:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 20:38:36,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:36,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 20:38:36,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 20:38:36,306 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:36,307 INFO L85 PathProgramCache]: Analyzing trace with hash 533518477, now seen corresponding path program 1 times [2022-11-18 20:38:36,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:36,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234492504] [2022-11-18 20:38:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:38:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:38:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:38:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:38:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:38:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:38:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:38:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:39,926 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:38:39,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:39,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234492504] [2022-11-18 20:38:39,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234492504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:39,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:39,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-18 20:38:39,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894228910] [2022-11-18 20:38:39,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:39,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:38:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:38:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:38:39,928 INFO L87 Difference]: Start difference. First operand 525 states and 633 transitions. Second operand has 24 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-18 20:38:43,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:43,433 INFO L93 Difference]: Finished difference Result 605 states and 773 transitions. [2022-11-18 20:38:43,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:38:43,433 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) Word has length 132 [2022-11-18 20:38:43,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:43,436 INFO L225 Difference]: With dead ends: 605 [2022-11-18 20:38:43,437 INFO L226 Difference]: Without dead ends: 603 [2022-11-18 20:38:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=254, Invalid=1816, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:38:43,438 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 313 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:43,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1087 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:38:43,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-11-18 20:38:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 523. [2022-11-18 20:38:43,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 419 states have (on average 1.1097852028639619) internal successors, (465), 428 states have internal predecessors, (465), 66 states have call successors, (66), 29 states have call predecessors, (66), 37 states have return successors, (98), 65 states have call predecessors, (98), 65 states have call successors, (98) [2022-11-18 20:38:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 629 transitions. [2022-11-18 20:38:43,543 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 629 transitions. Word has length 132 [2022-11-18 20:38:43,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:43,543 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 629 transitions. [2022-11-18 20:38:43,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 19 states have internal predecessors, (74), 8 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 7 states have call successors, (11) [2022-11-18 20:38:43,544 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 629 transitions. [2022-11-18 20:38:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:38:43,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:43,546 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:38:43,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:38:43,546 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:43,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2087924170, now seen corresponding path program 1 times [2022-11-18 20:38:43,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:43,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441492029] [2022-11-18 20:38:43,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:38:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:38:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:38:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:38:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:38:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:38:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:38:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:38:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:38:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 60 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:38:45,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:45,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441492029] [2022-11-18 20:38:45,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441492029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:45,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105865683] [2022-11-18 20:38:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:45,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:38:45,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:38:45,118 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:38:45,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 20:38:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:45,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 20:38:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:38:45,767 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 20:38:46,161 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:38:46,161 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 20:38:46,183 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 20:38:47,073 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:38:47,073 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 20:38:47,425 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:38:47,425 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 20:38:47,568 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2399 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2399))) is different from true [2022-11-18 20:38:47,580 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 19 treesize of output 21 [2022-11-18 20:38:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:38:54,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:54,948 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2402 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_2402) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.offset| 16)) 18446744073709551616) 0))) is different from false [2022-11-18 20:38:54,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105865683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:38:54,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:38:54,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 39 [2022-11-18 20:38:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422019346] [2022-11-18 20:38:54,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:38:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:54,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:38:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1577, Unknown=7, NotChecked=162, Total=1892 [2022-11-18 20:38:54,951 INFO L87 Difference]: Start difference. First operand 523 states and 629 transitions. Second operand has 39 states, 37 states have (on average 5.108108108108108) internal successors, (189), 35 states have internal predecessors, (189), 13 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2022-11-18 20:39:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:04,203 INFO L93 Difference]: Finished difference Result 654 states and 811 transitions. [2022-11-18 20:39:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-18 20:39:04,204 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 5.108108108108108) internal successors, (189), 35 states have internal predecessors, (189), 13 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) Word has length 134 [2022-11-18 20:39:04,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:04,206 INFO L225 Difference]: With dead ends: 654 [2022-11-18 20:39:04,206 INFO L226 Difference]: Without dead ends: 621 [2022-11-18 20:39:04,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 189 SyntacticMatches, 15 SemanticMatches, 87 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=553, Invalid=6917, Unknown=20, NotChecked=342, Total=7832 [2022-11-18 20:39:04,208 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 326 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1729 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:04,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 3019 Invalid, 4023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2048 Invalid, 0 Unknown, 1729 Unchecked, 2.2s Time] [2022-11-18 20:39:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-11-18 20:39:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 561. [2022-11-18 20:39:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 447 states have (on average 1.109619686800895) internal successors, (496), 458 states have internal predecessors, (496), 74 states have call successors, (74), 31 states have call predecessors, (74), 39 states have return successors, (121), 71 states have call predecessors, (121), 73 states have call successors, (121) [2022-11-18 20:39:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 691 transitions. [2022-11-18 20:39:04,413 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 691 transitions. Word has length 134 [2022-11-18 20:39:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:04,414 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 691 transitions. [2022-11-18 20:39:04,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 5.108108108108108) internal successors, (189), 35 states have internal predecessors, (189), 13 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 9 states have call predecessors, (24), 12 states have call successors, (24) [2022-11-18 20:39:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 691 transitions. [2022-11-18 20:39:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 20:39:04,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:04,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:39:04,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-18 20:39:04,629 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1038452848, now seen corresponding path program 1 times [2022-11-18 20:39:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149091454] [2022-11-18 20:39:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:04,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:39:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:39:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:39:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:39:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:39:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:39:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:39:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:39:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 20:39:08,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:08,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149091454] [2022-11-18 20:39:08,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149091454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:08,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439854660] [2022-11-18 20:39:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:08,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:08,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:08,439 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:08,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 20:39:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:09,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-18 20:39:09,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:09,219 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 20:39:09,609 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:39:09,610 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 20:39:09,622 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 20:39:10,395 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:39:10,396 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 20:39:10,795 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:39:10,795 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 20:39:10,985 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2491 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2491))) is different from true [2022-11-18 20:39:10,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:39:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 19 proven. 76 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:39:12,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:13,786 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2494 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_2494) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.base|))) (let ((.cse0 (mod (select .cse1 (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.offset| 16)) 18446744073709551616))) (or (= .cse0 0) (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.offset|) 18446744073709551616))))))) is different from false [2022-11-18 20:39:13,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439854660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:13,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:39:13,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2022-11-18 20:39:13,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884455584] [2022-11-18 20:39:13,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:39:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:39:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=2231, Unknown=14, NotChecked=194, Total=2652 [2022-11-18 20:39:13,790 INFO L87 Difference]: Start difference. First operand 561 states and 691 transitions. Second operand has 44 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 39 states have internal predecessors, (187), 16 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 20:39:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:18,848 INFO L93 Difference]: Finished difference Result 621 states and 768 transitions. [2022-11-18 20:39:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:39:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 39 states have internal predecessors, (187), 16 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) Word has length 134 [2022-11-18 20:39:18,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:18,852 INFO L225 Difference]: With dead ends: 621 [2022-11-18 20:39:18,852 INFO L226 Difference]: Without dead ends: 604 [2022-11-18 20:39:18,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=599, Invalid=6352, Unknown=29, NotChecked=330, Total=7310 [2022-11-18 20:39:18,853 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 294 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 4056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1761 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:18,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1906 Invalid, 4056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2142 Invalid, 0 Unknown, 1761 Unchecked, 2.4s Time] [2022-11-18 20:39:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-18 20:39:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 572. [2022-11-18 20:39:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 453 states have (on average 1.1103752759381897) internal successors, (503), 462 states have internal predecessors, (503), 79 states have call successors, (79), 33 states have call predecessors, (79), 39 states have return successors, (127), 76 states have call predecessors, (127), 78 states have call successors, (127) [2022-11-18 20:39:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 709 transitions. [2022-11-18 20:39:18,996 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 709 transitions. Word has length 134 [2022-11-18 20:39:18,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:18,997 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 709 transitions. [2022-11-18 20:39:18,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 39 states have internal predecessors, (187), 16 states have call successors, (24), 10 states have call predecessors, (24), 12 states have return successors, (23), 12 states have call predecessors, (23), 15 states have call successors, (23) [2022-11-18 20:39:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 709 transitions. [2022-11-18 20:39:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 20:39:18,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:18,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:39:19,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:39:19,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-11-18 20:39:19,209 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:19,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:19,209 INFO L85 PathProgramCache]: Analyzing trace with hash 150909278, now seen corresponding path program 1 times [2022-11-18 20:39:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:19,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228904114] [2022-11-18 20:39:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:39:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:39:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:39:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:39:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:20,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:39:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:39:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:39:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:39:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 29 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 20:39:21,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228904114] [2022-11-18 20:39:21,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228904114] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:21,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263538781] [2022-11-18 20:39:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:21,364 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 20:39:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:22,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:39:22,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:22,137 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 20:39:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:39:23,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:25,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263538781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:25,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:39:25,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2022-11-18 20:39:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81378382] [2022-11-18 20:39:25,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:39:25,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 20:39:25,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 20:39:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:39:25,968 INFO L87 Difference]: Start difference. First operand 572 states and 709 transitions. Second operand has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 22 states have internal predecessors, (137), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 20:39:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:28,233 INFO L93 Difference]: Finished difference Result 602 states and 742 transitions. [2022-11-18 20:39:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 20:39:28,234 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 22 states have internal predecessors, (137), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 137 [2022-11-18 20:39:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:28,237 INFO L225 Difference]: With dead ends: 602 [2022-11-18 20:39:28,238 INFO L226 Difference]: Without dead ends: 583 [2022-11-18 20:39:28,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=350, Invalid=1906, Unknown=0, NotChecked=0, Total=2256 [2022-11-18 20:39:28,239 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 460 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:28,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 900 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1141 Invalid, 0 Unknown, 231 Unchecked, 1.2s Time] [2022-11-18 20:39:28,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-18 20:39:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 560. [2022-11-18 20:39:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 442 states have (on average 1.1108597285067874) internal successors, (491), 450 states have internal predecessors, (491), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (126), 76 states have call predecessors, (126), 78 states have call successors, (126) [2022-11-18 20:39:28,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 696 transitions. [2022-11-18 20:39:28,393 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 696 transitions. Word has length 137 [2022-11-18 20:39:28,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:28,393 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 696 transitions. [2022-11-18 20:39:28,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.708333333333333) internal successors, (137), 22 states have internal predecessors, (137), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 20:39:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 696 transitions. [2022-11-18 20:39:28,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 20:39:28,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:28,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:39:28,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 20:39:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-18 20:39:28,604 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1695604062, now seen corresponding path program 1 times [2022-11-18 20:39:28,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876940402] [2022-11-18 20:39:28,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:39:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:39:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:39:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:39:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:39:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:39:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:39:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:39:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:39:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:39:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 46 proven. 23 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:39:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:32,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876940402] [2022-11-18 20:39:32,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876940402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:39:32,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331972517] [2022-11-18 20:39:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:39:32,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:39:32,270 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:39:32,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 20:39:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:32,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:39:32,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:39:33,064 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 20:39:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:39:34,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:39:59,944 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:40:00,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331972517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:00,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:00,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2022-11-18 20:40:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292420863] [2022-11-18 20:40:00,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:00,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:40:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:40:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1262, Unknown=6, NotChecked=0, Total=1406 [2022-11-18 20:40:00,154 INFO L87 Difference]: Start difference. First operand 560 states and 696 transitions. Second operand has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 25 states have internal predecessors, (132), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 20:40:04,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:04,695 INFO L93 Difference]: Finished difference Result 596 states and 734 transitions. [2022-11-18 20:40:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:40:04,696 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 25 states have internal predecessors, (132), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 137 [2022-11-18 20:40:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:04,700 INFO L225 Difference]: With dead ends: 596 [2022-11-18 20:40:04,700 INFO L226 Difference]: Without dead ends: 584 [2022-11-18 20:40:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 195 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=541, Invalid=2748, Unknown=17, NotChecked=0, Total=3306 [2022-11-18 20:40:04,702 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 574 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:04,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1062 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1411 Invalid, 0 Unknown, 507 Unchecked, 2.2s Time] [2022-11-18 20:40:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-18 20:40:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 550. [2022-11-18 20:40:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.1111111111111112) internal successors, (480), 441 states have internal predecessors, (480), 79 states have call successors, (79), 32 states have call predecessors, (79), 38 states have return successors, (125), 76 states have call predecessors, (125), 78 states have call successors, (125) [2022-11-18 20:40:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 684 transitions. [2022-11-18 20:40:04,838 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 684 transitions. Word has length 137 [2022-11-18 20:40:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:04,838 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 684 transitions. [2022-11-18 20:40:04,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 25 states have internal predecessors, (132), 8 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-18 20:40:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 684 transitions. [2022-11-18 20:40:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:40:04,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:04,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:04,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-18 20:40:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-11-18 20:40:05,078 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1207681231, now seen corresponding path program 2 times [2022-11-18 20:40:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:05,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768321088] [2022-11-18 20:40:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:40:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:40:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:40:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:40:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:40:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:40:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:40:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:40:05,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:40:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:05,832 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 20:40:05,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:05,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768321088] [2022-11-18 20:40:05,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768321088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:05,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395694182] [2022-11-18 20:40:05,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:05,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:05,835 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:05,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 20:40:07,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:07,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:07,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 20:40:07,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:40:07,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-18 20:40:07,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395694182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:07,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:07,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 17 [2022-11-18 20:40:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590999364] [2022-11-18 20:40:07,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:07,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:40:07,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:07,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:40:07,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:40:07,605 INFO L87 Difference]: Start difference. First operand 550 states and 684 transitions. Second operand has 17 states, 16 states have (on average 6.25) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 20:40:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:09,230 INFO L93 Difference]: Finished difference Result 627 states and 765 transitions. [2022-11-18 20:40:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:40:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.25) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) Word has length 136 [2022-11-18 20:40:09,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:09,233 INFO L225 Difference]: With dead ends: 627 [2022-11-18 20:40:09,233 INFO L226 Difference]: Without dead ends: 561 [2022-11-18 20:40:09,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 287 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:40:09,234 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 168 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:09,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1113 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:40:09,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-18 20:40:09,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 550. [2022-11-18 20:40:09,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 432 states have (on average 1.1087962962962963) internal successors, (479), 441 states have internal predecessors, (479), 79 states have call successors, (79), 32 states have call predecessors, (79), 38 states have return successors, (125), 76 states have call predecessors, (125), 78 states have call successors, (125) [2022-11-18 20:40:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 683 transitions. [2022-11-18 20:40:09,400 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 683 transitions. Word has length 136 [2022-11-18 20:40:09,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:09,400 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 683 transitions. [2022-11-18 20:40:09,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.25) internal successors, (100), 10 states have internal predecessors, (100), 3 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 20:40:09,401 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 683 transitions. [2022-11-18 20:40:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:40:09,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:09,402 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:09,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-11-18 20:40:09,619 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash 573803283, now seen corresponding path program 1 times [2022-11-18 20:40:09,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:09,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428671906] [2022-11-18 20:40:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:40:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:40:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:40:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:40:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:40:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:40:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:40:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 20:40:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-18 20:40:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:12,833 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:40:12,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:12,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428671906] [2022-11-18 20:40:12,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428671906] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:12,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741948244] [2022-11-18 20:40:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:12,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:12,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:12,836 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:12,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 20:40:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-18 20:40:13,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:13,882 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 20:40:13,888 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 20:40:21,997 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2791 Int) (v_ArrVal_2793 (Array Int Int)) (|aws_add_size_checked_aws_add_u64_checked_~r#1.base| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_2791)) |c_#memory_$Pointer$.base|) (= (store |c_old(#memory_int)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base| v_ArrVal_2793) |c_#memory_int|))) is different from true [2022-11-18 20:40:22,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:22,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-18 20:40:22,049 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:40:22,049 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 19 treesize of output 25 [2022-11-18 20:40:22,055 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 10 treesize of output 6 [2022-11-18 20:40:24,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:24,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:24,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 17 [2022-11-18 20:40:24,975 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 81 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:40:24,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:27,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741948244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:27,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:27,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 51 [2022-11-18 20:40:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166775383] [2022-11-18 20:40:27,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:40:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:40:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=3780, Unknown=6, NotChecked=124, Total=4160 [2022-11-18 20:40:27,269 INFO L87 Difference]: Start difference. First operand 550 states and 683 transitions. Second operand has 51 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 42 states have internal predecessors, (175), 16 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (24), 17 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-18 20:40:37,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:37,131 INFO L93 Difference]: Finished difference Result 670 states and 825 transitions. [2022-11-18 20:40:37,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:40:37,132 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 42 states have internal predecessors, (175), 16 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (24), 17 states have call predecessors, (24), 16 states have call successors, (24) Word has length 136 [2022-11-18 20:40:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:37,136 INFO L225 Difference]: With dead ends: 670 [2022-11-18 20:40:37,136 INFO L226 Difference]: Without dead ends: 579 [2022-11-18 20:40:37,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 163 SyntacticMatches, 5 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2162 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=492, Invalid=7151, Unknown=17, NotChecked=172, Total=7832 [2022-11-18 20:40:37,138 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 405 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 6108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1078 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 2458 Invalid, 6108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 4677 Invalid, 0 Unknown, 1078 Unchecked, 4.1s Time] [2022-11-18 20:40:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-18 20:40:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 548. [2022-11-18 20:40:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 432 states have (on average 1.1041666666666667) internal successors, (477), 442 states have internal predecessors, (477), 77 states have call successors, (77), 31 states have call predecessors, (77), 38 states have return successors, (123), 74 states have call predecessors, (123), 76 states have call successors, (123) [2022-11-18 20:40:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 677 transitions. [2022-11-18 20:40:37,297 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 677 transitions. Word has length 136 [2022-11-18 20:40:37,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:37,298 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 677 transitions. [2022-11-18 20:40:37,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 3.6458333333333335) internal successors, (175), 42 states have internal predecessors, (175), 16 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (24), 17 states have call predecessors, (24), 16 states have call successors, (24) [2022-11-18 20:40:37,298 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 677 transitions. [2022-11-18 20:40:37,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 20:40:37,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:37,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:40:37,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:37,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-11-18 20:40:37,500 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:37,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2095926953, now seen corresponding path program 1 times [2022-11-18 20:40:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:37,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778139261] [2022-11-18 20:40:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:40:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:40:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:40:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:40:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:40:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:40:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:40:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:40:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 20:40:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 20:40:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778139261] [2022-11-18 20:40:41,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778139261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252153768] [2022-11-18 20:40:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:41,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:41,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:41,281 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:41,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-18 20:40:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:42,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-18 20:40:42,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:42,014 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 20:40:42,354 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:40:42,355 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 20:40:43,748 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:40:43,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:40:44,266 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:40:44,266 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 20:40:44,422 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2888 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_2888) |c_#memory_int|)) is different from true [2022-11-18 20:40:44,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 20:40:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 19 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:40:45,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:46,217 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2891 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_2891) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_harness_~#buf~3#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2022-11-18 20:40:46,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252153768] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:46,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:46,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 31] total 50 [2022-11-18 20:40:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833446965] [2022-11-18 20:40:46,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:46,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-18 20:40:46,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-18 20:40:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2725, Unknown=15, NotChecked=214, Total=3192 [2022-11-18 20:40:46,221 INFO L87 Difference]: Start difference. First operand 548 states and 677 transitions. Second operand has 50 states, 47 states have (on average 4.0212765957446805) internal successors, (189), 43 states have internal predecessors, (189), 17 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-18 20:40:50,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:50,597 INFO L93 Difference]: Finished difference Result 601 states and 744 transitions. [2022-11-18 20:40:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:40:50,598 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 4.0212765957446805) internal successors, (189), 43 states have internal predecessors, (189), 17 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 16 states have call successors, (23) Word has length 136 [2022-11-18 20:40:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:50,601 INFO L225 Difference]: With dead ends: 601 [2022-11-18 20:40:50,601 INFO L226 Difference]: Without dead ends: 536 [2022-11-18 20:40:50,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 178 SyntacticMatches, 10 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2807 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=692, Invalid=7653, Unknown=35, NotChecked=362, Total=8742 [2022-11-18 20:40:50,603 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 589 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 4088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1697 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:50,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 1832 Invalid, 4088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 1889 Invalid, 0 Unknown, 1697 Unchecked, 2.0s Time] [2022-11-18 20:40:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-18 20:40:50,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 507. [2022-11-18 20:40:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 398 states have (on average 1.1055276381909547) internal successors, (440), 409 states have internal predecessors, (440), 73 states have call successors, (73), 28 states have call predecessors, (73), 35 states have return successors, (116), 69 states have call predecessors, (116), 72 states have call successors, (116) [2022-11-18 20:40:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 629 transitions. [2022-11-18 20:40:50,756 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 629 transitions. Word has length 136 [2022-11-18 20:40:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:50,756 INFO L495 AbstractCegarLoop]: Abstraction has 507 states and 629 transitions. [2022-11-18 20:40:50,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 4.0212765957446805) internal successors, (189), 43 states have internal predecessors, (189), 17 states have call successors, (24), 10 states have call predecessors, (24), 13 states have return successors, (23), 15 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-18 20:40:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 629 transitions. [2022-11-18 20:40:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 20:40:50,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:50,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:40:50,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:50,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:50,969 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2036916201, now seen corresponding path program 1 times [2022-11-18 20:40:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:50,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957483173] [2022-11-18 20:40:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:40:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:40:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:40:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:40:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:40:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:40:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 20:40:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:40:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:40:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:40:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:40:53,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:53,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957483173] [2022-11-18 20:40:53,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957483173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:53,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:53,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 20:40:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467825664] [2022-11-18 20:40:53,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:53,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 20:40:53,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 20:40:53,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:40:53,076 INFO L87 Difference]: Start difference. First operand 507 states and 629 transitions. Second operand has 19 states, 18 states have (on average 4.277777777777778) internal successors, (77), 13 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:40:55,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:55,171 INFO L93 Difference]: Finished difference Result 525 states and 649 transitions. [2022-11-18 20:40:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:40:55,172 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.277777777777778) internal successors, (77), 13 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 139 [2022-11-18 20:40:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:55,175 INFO L225 Difference]: With dead ends: 525 [2022-11-18 20:40:55,175 INFO L226 Difference]: Without dead ends: 490 [2022-11-18 20:40:55,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:40:55,176 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 196 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:55,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1102 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:40:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-18 20:40:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 479. [2022-11-18 20:40:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 376 states have (on average 1.1090425531914894) internal successors, (417), 387 states have internal predecessors, (417), 69 states have call successors, (69), 26 states have call predecessors, (69), 33 states have return successors, (111), 65 states have call predecessors, (111), 68 states have call successors, (111) [2022-11-18 20:40:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 597 transitions. [2022-11-18 20:40:55,284 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 597 transitions. Word has length 139 [2022-11-18 20:40:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:55,285 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 597 transitions. [2022-11-18 20:40:55,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.277777777777778) internal successors, (77), 13 states have internal predecessors, (77), 5 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 20:40:55,285 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 597 transitions. [2022-11-18 20:40:55,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:40:55,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:55,287 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 20:40:55,287 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:55,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1240022649, now seen corresponding path program 1 times [2022-11-18 20:40:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:55,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298758814] [2022-11-18 20:40:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:40:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:40:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:40:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:40:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:40:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:40:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:40:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:40:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:40:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 20:40:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:56,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298758814] [2022-11-18 20:40:56,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298758814] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:56,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252509562] [2022-11-18 20:40:56,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:56,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:56,458 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:56,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-18 20:40:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:57,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 20:40:57,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:57,787 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3009 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3009))) is different from true [2022-11-18 20:40:57,811 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:40:57,811 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 28 treesize of output 31 [2022-11-18 20:40:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 43 proven. 45 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 20:40:58,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 66 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:40:59,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252509562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:59,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:59,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 9] total 28 [2022-11-18 20:40:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143914095] [2022-11-18 20:40:59,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:59,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:40:59,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:59,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:40:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=616, Unknown=1, NotChecked=50, Total=756 [2022-11-18 20:40:59,050 INFO L87 Difference]: Start difference. First operand 479 states and 597 transitions. Second operand has 28 states, 27 states have (on average 6.555555555555555) internal successors, (177), 24 states have internal predecessors, (177), 10 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2022-11-18 20:41:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:03,477 INFO L93 Difference]: Finished difference Result 688 states and 869 transitions. [2022-11-18 20:41:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:41:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.555555555555555) internal successors, (177), 24 states have internal predecessors, (177), 10 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) Word has length 141 [2022-11-18 20:41:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:03,480 INFO L225 Difference]: With dead ends: 688 [2022-11-18 20:41:03,480 INFO L226 Difference]: Without dead ends: 601 [2022-11-18 20:41:03,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 285 SyntacticMatches, 10 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=310, Invalid=1667, Unknown=7, NotChecked=86, Total=2070 [2022-11-18 20:41:03,481 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 375 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 3818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 761 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:03,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 1538 Invalid, 3818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 2857 Invalid, 0 Unknown, 761 Unchecked, 3.1s Time] [2022-11-18 20:41:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-18 20:41:03,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 479. [2022-11-18 20:41:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 376 states have (on average 1.1063829787234043) internal successors, (416), 387 states have internal predecessors, (416), 69 states have call successors, (69), 26 states have call predecessors, (69), 33 states have return successors, (110), 65 states have call predecessors, (110), 68 states have call successors, (110) [2022-11-18 20:41:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 595 transitions. [2022-11-18 20:41:03,629 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 595 transitions. Word has length 141 [2022-11-18 20:41:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:03,629 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 595 transitions. [2022-11-18 20:41:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.555555555555555) internal successors, (177), 24 states have internal predecessors, (177), 10 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (23), 9 states have call predecessors, (23), 10 states have call successors, (23) [2022-11-18 20:41:03,630 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 595 transitions. [2022-11-18 20:41:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 20:41:03,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:03,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 20:41:03,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:03,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:03,831 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1849323017, now seen corresponding path program 1 times [2022-11-18 20:41:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:03,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857631962] [2022-11-18 20:41:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:07,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:41:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-11-18 20:41:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:07,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857631962] [2022-11-18 20:41:07,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857631962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:07,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:07,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 20:41:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668466859] [2022-11-18 20:41:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:07,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:41:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:41:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:41:07,460 INFO L87 Difference]: Start difference. First operand 479 states and 595 transitions. Second operand has 17 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-18 20:41:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:10,126 INFO L93 Difference]: Finished difference Result 539 states and 687 transitions. [2022-11-18 20:41:10,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 20:41:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 141 [2022-11-18 20:41:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:10,128 INFO L225 Difference]: With dead ends: 539 [2022-11-18 20:41:10,129 INFO L226 Difference]: Without dead ends: 537 [2022-11-18 20:41:10,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:41:10,129 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 151 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:10,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 737 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:41:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-18 20:41:10,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 487. [2022-11-18 20:41:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 382 states have (on average 1.1073298429319371) internal successors, (423), 394 states have internal predecessors, (423), 70 states have call successors, (70), 27 states have call predecessors, (70), 34 states have return successors, (111), 65 states have call predecessors, (111), 69 states have call successors, (111) [2022-11-18 20:41:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 604 transitions. [2022-11-18 20:41:10,247 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 604 transitions. Word has length 141 [2022-11-18 20:41:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:10,248 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 604 transitions. [2022-11-18 20:41:10,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2022-11-18 20:41:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 604 transitions. [2022-11-18 20:41:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-18 20:41:10,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:10,249 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:41:10,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 20:41:10,249 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:10,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1040037434, now seen corresponding path program 1 times [2022-11-18 20:41:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:10,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893555667] [2022-11-18 20:41:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:10,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:41:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:41:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-18 20:41:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 20:41:14,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:14,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893555667] [2022-11-18 20:41:14,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893555667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:14,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:14,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-18 20:41:14,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192720622] [2022-11-18 20:41:14,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:14,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 20:41:14,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:14,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 20:41:14,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-11-18 20:41:14,666 INFO L87 Difference]: Start difference. First operand 487 states and 604 transitions. Second operand has 26 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 21 states have internal predecessors, (68), 11 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-18 20:41:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:18,699 INFO L93 Difference]: Finished difference Result 567 states and 754 transitions. [2022-11-18 20:41:18,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:41:18,699 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 21 states have internal predecessors, (68), 11 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) Word has length 153 [2022-11-18 20:41:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:18,702 INFO L225 Difference]: With dead ends: 567 [2022-11-18 20:41:18,702 INFO L226 Difference]: Without dead ends: 565 [2022-11-18 20:41:18,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1785, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:41:18,704 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 386 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:18,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 753 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-18 20:41:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-18 20:41:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 496. [2022-11-18 20:41:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 388 states have (on average 1.1056701030927836) internal successors, (429), 400 states have internal predecessors, (429), 72 states have call successors, (72), 28 states have call predecessors, (72), 35 states have return successors, (113), 67 states have call predecessors, (113), 71 states have call successors, (113) [2022-11-18 20:41:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 614 transitions. [2022-11-18 20:41:18,891 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 614 transitions. Word has length 153 [2022-11-18 20:41:18,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:18,892 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 614 transitions. [2022-11-18 20:41:18,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 21 states have internal predecessors, (68), 11 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-18 20:41:18,893 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 614 transitions. [2022-11-18 20:41:18,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-18 20:41:18,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:18,895 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:18,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 20:41:18,895 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:18,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1961388855, now seen corresponding path program 1 times [2022-11-18 20:41:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:18,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622082899] [2022-11-18 20:41:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:19,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:41:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:41:19,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:19,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622082899] [2022-11-18 20:41:19,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622082899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:19,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:19,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260397953] [2022-11-18 20:41:19,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:19,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:19,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:19,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:19,364 INFO L87 Difference]: Start difference. First operand 496 states and 614 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:41:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:20,189 INFO L93 Difference]: Finished difference Result 665 states and 880 transitions. [2022-11-18 20:41:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:41:20,190 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 155 [2022-11-18 20:41:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:20,193 INFO L225 Difference]: With dead ends: 665 [2022-11-18 20:41:20,193 INFO L226 Difference]: Without dead ends: 557 [2022-11-18 20:41:20,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:41:20,195 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 183 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:20,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 485 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:41:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-18 20:41:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 504. [2022-11-18 20:41:20,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 395 states have (on average 1.1037974683544305) internal successors, (436), 405 states have internal predecessors, (436), 72 states have call successors, (72), 28 states have call predecessors, (72), 36 states have return successors, (116), 70 states have call predecessors, (116), 71 states have call successors, (116) [2022-11-18 20:41:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 624 transitions. [2022-11-18 20:41:20,382 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 624 transitions. Word has length 155 [2022-11-18 20:41:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 624 transitions. [2022-11-18 20:41:20,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 20:41:20,383 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 624 transitions. [2022-11-18 20:41:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-18 20:41:20,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:20,385 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-11-18 20:41:20,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 20:41:20,385 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:20,386 INFO L85 PathProgramCache]: Analyzing trace with hash 323919915, now seen corresponding path program 1 times [2022-11-18 20:41:20,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:20,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029133100] [2022-11-18 20:41:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:20,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:41:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:41:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 20:41:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:20,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029133100] [2022-11-18 20:41:20,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029133100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:20,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:20,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:41:20,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973400568] [2022-11-18 20:41:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:20,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:41:20,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:41:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:41:20,923 INFO L87 Difference]: Start difference. First operand 504 states and 624 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:41:21,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:21,608 INFO L93 Difference]: Finished difference Result 582 states and 721 transitions. [2022-11-18 20:41:21,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:41:21,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 157 [2022-11-18 20:41:21,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:21,612 INFO L225 Difference]: With dead ends: 582 [2022-11-18 20:41:21,612 INFO L226 Difference]: Without dead ends: 515 [2022-11-18 20:41:21,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:41:21,613 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 74 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:21,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 433 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:41:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-18 20:41:21,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 504. [2022-11-18 20:41:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 395 states have (on average 1.0936708860759494) internal successors, (432), 405 states have internal predecessors, (432), 72 states have call successors, (72), 28 states have call predecessors, (72), 36 states have return successors, (116), 70 states have call predecessors, (116), 71 states have call successors, (116) [2022-11-18 20:41:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 620 transitions. [2022-11-18 20:41:21,865 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 620 transitions. Word has length 157 [2022-11-18 20:41:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:21,865 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 620 transitions. [2022-11-18 20:41:21,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:41:21,865 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 620 transitions. [2022-11-18 20:41:21,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 20:41:21,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:21,867 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-18 20:41:21,867 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:21,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash 622329047, now seen corresponding path program 1 times [2022-11-18 20:41:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:21,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911484144] [2022-11-18 20:41:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:21,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:41:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:41:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-11-18 20:41:22,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:22,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911484144] [2022-11-18 20:41:22,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911484144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:22,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:22,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:41:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667950622] [2022-11-18 20:41:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:22,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:41:22,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:41:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:41:22,735 INFO L87 Difference]: Start difference. First operand 504 states and 620 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:41:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:23,689 INFO L93 Difference]: Finished difference Result 525 states and 645 transitions. [2022-11-18 20:41:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:41:23,690 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 161 [2022-11-18 20:41:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:23,692 INFO L225 Difference]: With dead ends: 525 [2022-11-18 20:41:23,692 INFO L226 Difference]: Without dead ends: 523 [2022-11-18 20:41:23,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:41:23,693 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 257 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:23,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 676 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:41:23,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-11-18 20:41:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 514. [2022-11-18 20:41:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 401 states have (on average 1.0922693266832917) internal successors, (438), 412 states have internal predecessors, (438), 74 states have call successors, (74), 29 states have call predecessors, (74), 38 states have return successors, (119), 72 states have call predecessors, (119), 73 states have call successors, (119) [2022-11-18 20:41:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 631 transitions. [2022-11-18 20:41:23,873 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 631 transitions. Word has length 161 [2022-11-18 20:41:23,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:23,873 INFO L495 AbstractCegarLoop]: Abstraction has 514 states and 631 transitions. [2022-11-18 20:41:23,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:41:23,873 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 631 transitions. [2022-11-18 20:41:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 20:41:23,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:23,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:23,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-18 20:41:23,875 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1055586776, now seen corresponding path program 1 times [2022-11-18 20:41:23,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:23,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215914890] [2022-11-18 20:41:23,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:23,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:41:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:41:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:24,245 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:41:24,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:24,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215914890] [2022-11-18 20:41:24,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215914890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:24,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:24,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:41:24,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061856139] [2022-11-18 20:41:24,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:41:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:41:24,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:41:24,247 INFO L87 Difference]: Start difference. First operand 514 states and 631 transitions. Second operand has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:41:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:25,118 INFO L93 Difference]: Finished difference Result 634 states and 804 transitions. [2022-11-18 20:41:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:41:25,119 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 161 [2022-11-18 20:41:25,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:25,122 INFO L225 Difference]: With dead ends: 634 [2022-11-18 20:41:25,122 INFO L226 Difference]: Without dead ends: 540 [2022-11-18 20:41:25,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:41:25,132 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 132 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:25,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 554 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:41:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-18 20:41:25,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 516. [2022-11-18 20:41:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 405 states have (on average 1.0839506172839506) internal successors, (439), 414 states have internal predecessors, (439), 72 states have call successors, (72), 29 states have call predecessors, (72), 38 states have return successors, (109), 72 states have call predecessors, (109), 71 states have call successors, (109) [2022-11-18 20:41:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 620 transitions. [2022-11-18 20:41:25,342 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 620 transitions. Word has length 161 [2022-11-18 20:41:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:25,342 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 620 transitions. [2022-11-18 20:41:25,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.7) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:41:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 620 transitions. [2022-11-18 20:41:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-18 20:41:25,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:25,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:41:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-18 20:41:25,345 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:25,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1154832127, now seen corresponding path program 1 times [2022-11-18 20:41:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:25,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300023725] [2022-11-18 20:41:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:41:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-11-18 20:41:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 20:41:25,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:25,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300023725] [2022-11-18 20:41:25,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300023725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:25,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:25,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:41:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273773703] [2022-11-18 20:41:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:25,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:41:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:41:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:41:25,944 INFO L87 Difference]: Start difference. First operand 516 states and 620 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:41:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:26,761 INFO L93 Difference]: Finished difference Result 661 states and 837 transitions. [2022-11-18 20:41:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:41:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2022-11-18 20:41:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:26,764 INFO L225 Difference]: With dead ends: 661 [2022-11-18 20:41:26,764 INFO L226 Difference]: Without dead ends: 548 [2022-11-18 20:41:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:41:26,765 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 119 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:26,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 562 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:41:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-18 20:41:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 517. [2022-11-18 20:41:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 406 states have (on average 1.083743842364532) internal successors, (440), 415 states have internal predecessors, (440), 72 states have call successors, (72), 29 states have call predecessors, (72), 38 states have return successors, (109), 72 states have call predecessors, (109), 71 states have call successors, (109) [2022-11-18 20:41:26,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 621 transitions. [2022-11-18 20:41:26,949 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 621 transitions. Word has length 162 [2022-11-18 20:41:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:26,949 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 621 transitions. [2022-11-18 20:41:26,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:41:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 621 transitions. [2022-11-18 20:41:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-18 20:41:26,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:26,952 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:41:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-18 20:41:26,952 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:26,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1002561309, now seen corresponding path program 1 times [2022-11-18 20:41:26,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:26,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494934901] [2022-11-18 20:41:26,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:26,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:41:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:41:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,716 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-18 20:41:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:27,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494934901] [2022-11-18 20:41:27,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494934901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:27,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:27,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:41:27,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706635442] [2022-11-18 20:41:27,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:27,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:41:27,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:27,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:41:27,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:41:27,718 INFO L87 Difference]: Start difference. First operand 517 states and 621 transitions. Second operand has 11 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:41:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:28,630 INFO L93 Difference]: Finished difference Result 531 states and 638 transitions. [2022-11-18 20:41:28,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:41:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 163 [2022-11-18 20:41:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:28,632 INFO L225 Difference]: With dead ends: 531 [2022-11-18 20:41:28,632 INFO L226 Difference]: Without dead ends: 529 [2022-11-18 20:41:28,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:41:28,633 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 132 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:28,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 721 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:41:28,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-11-18 20:41:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 522. [2022-11-18 20:41:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 409 states have (on average 1.0831295843520783) internal successors, (443), 418 states have internal predecessors, (443), 73 states have call successors, (73), 30 states have call predecessors, (73), 39 states have return successors, (110), 73 states have call predecessors, (110), 72 states have call successors, (110) [2022-11-18 20:41:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 626 transitions. [2022-11-18 20:41:28,750 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 626 transitions. Word has length 163 [2022-11-18 20:41:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 626 transitions. [2022-11-18 20:41:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.0) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:41:28,751 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 626 transitions. [2022-11-18 20:41:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-18 20:41:28,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:28,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-18 20:41:28,754 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:28,754 INFO L85 PathProgramCache]: Analyzing trace with hash 838772189, now seen corresponding path program 1 times [2022-11-18 20:41:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64774579] [2022-11-18 20:41:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:41:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:41:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:41:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:41:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:41:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:41:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:41:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:41:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:41:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:41:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:41:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:41:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:41:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:41:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:41:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64774579] [2022-11-18 20:41:30,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64774579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865130083] [2022-11-18 20:41:30,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:30,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:30,632 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-18 20:41:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:31,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:41:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:31,411 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 20:41:31,655 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:41:31,656 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 20:41:32,166 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:41:32,166 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 20:41:32,503 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:41:32,504 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 20:41:32,588 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3533 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3533) |c_#memory_int|)) is different from true [2022-11-18 20:41:32,601 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 17 treesize of output 19 [2022-11-18 20:41:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 31 proven. 92 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 20:41:46,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:49,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865130083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:49,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:41:49,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 37 [2022-11-18 20:41:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522778556] [2022-11-18 20:41:49,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:49,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:41:49,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:41:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1549, Unknown=10, NotChecked=80, Total=1806 [2022-11-18 20:41:49,069 INFO L87 Difference]: Start difference. First operand 522 states and 626 transitions. Second operand has 37 states, 36 states have (on average 6.055555555555555) internal successors, (218), 32 states have internal predecessors, (218), 10 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2022-11-18 20:41:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:57,400 INFO L93 Difference]: Finished difference Result 698 states and 828 transitions. [2022-11-18 20:41:57,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 20:41:57,400 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.055555555555555) internal successors, (218), 32 states have internal predecessors, (218), 10 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) Word has length 165 [2022-11-18 20:41:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:57,402 INFO L225 Difference]: With dead ends: 698 [2022-11-18 20:41:57,402 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 20:41:57,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 245 SyntacticMatches, 23 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=705, Invalid=5105, Unknown=46, NotChecked=150, Total=6006 [2022-11-18 20:41:57,403 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1864 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:57,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1996 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1883 Invalid, 0 Unknown, 1864 Unchecked, 1.7s Time] [2022-11-18 20:41:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 20:41:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 535. [2022-11-18 20:41:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 422 states have (on average 1.0781990521327014) internal successors, (455), 429 states have internal predecessors, (455), 72 states have call successors, (72), 33 states have call predecessors, (72), 40 states have return successors, (107), 72 states have call predecessors, (107), 71 states have call successors, (107) [2022-11-18 20:41:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 634 transitions. [2022-11-18 20:41:57,550 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 634 transitions. Word has length 165 [2022-11-18 20:41:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:57,551 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 634 transitions. [2022-11-18 20:41:57,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.055555555555555) internal successors, (218), 32 states have internal predecessors, (218), 10 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2022-11-18 20:41:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 634 transitions. [2022-11-18 20:41:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-18 20:41:57,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:57,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2022-11-18 20:41:57,753 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:57,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:57,754 INFO L85 PathProgramCache]: Analyzing trace with hash -441091489, now seen corresponding path program 1 times [2022-11-18 20:41:57,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685650107] [2022-11-18 20:41:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:42:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:42:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:42:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:42:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:42:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:42:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:42:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:42:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:42:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:42:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:42:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:42:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:42:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:42:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 29 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 20:42:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685650107] [2022-11-18 20:42:02,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685650107] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:02,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83483534] [2022-11-18 20:42:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:02,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:02,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:02,604 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:02,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-18 20:42:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:03,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-18 20:42:03,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:03,368 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 20:42:03,784 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:42:03,784 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 20:42:03,800 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 20:42:03,963 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:42:03,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 20:42:04,426 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:42:04,426 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 20:42:04,449 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3624 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3624))) is different from true [2022-11-18 20:42:04,460 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 26 [2022-11-18 20:42:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 52 proven. 76 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:42:30,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:31,692 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3627 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_3627) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.offset| 16)) 18446744073709551616) 0))) is different from false [2022-11-18 20:42:31,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83483534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:31,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:42:31,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29] total 46 [2022-11-18 20:42:31,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530114343] [2022-11-18 20:42:31,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:31,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:42:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:42:31,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=2939, Unknown=11, NotChecked=222, Total=3422 [2022-11-18 20:42:31,696 INFO L87 Difference]: Start difference. First operand 535 states and 634 transitions. Second operand has 46 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 11 states have call successors, (32), 10 states have call predecessors, (32), 13 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 20:42:41,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:41,244 INFO L93 Difference]: Finished difference Result 638 states and 744 transitions. [2022-11-18 20:42:41,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 20:42:41,245 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 11 states have call successors, (32), 10 states have call predecessors, (32), 13 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) Word has length 165 [2022-11-18 20:42:41,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:41,248 INFO L225 Difference]: With dead ends: 638 [2022-11-18 20:42:41,248 INFO L226 Difference]: Without dead ends: 559 [2022-11-18 20:42:41,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 234 SyntacticMatches, 22 SemanticMatches, 85 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2348 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=654, Invalid=6463, Unknown=31, NotChecked=334, Total=7482 [2022-11-18 20:42:41,249 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 260 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1762 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:41,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1731 Invalid, 3227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1407 Invalid, 0 Unknown, 1762 Unchecked, 1.2s Time] [2022-11-18 20:42:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-11-18 20:42:41,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 549. [2022-11-18 20:42:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 432 states have (on average 1.0763888888888888) internal successors, (465), 441 states have internal predecessors, (465), 72 states have call successors, (72), 35 states have call predecessors, (72), 44 states have return successors, (107), 72 states have call predecessors, (107), 71 states have call successors, (107) [2022-11-18 20:42:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 644 transitions. [2022-11-18 20:42:41,396 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 644 transitions. Word has length 165 [2022-11-18 20:42:41,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:41,397 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 644 transitions. [2022-11-18 20:42:41,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 11 states have call successors, (32), 10 states have call predecessors, (32), 13 states have return successors, (30), 10 states have call predecessors, (30), 10 states have call successors, (30) [2022-11-18 20:42:41,397 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 644 transitions. [2022-11-18 20:42:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:42:41,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:41,399 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:41,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:41,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-11-18 20:42:41,602 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:42:41,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:41,602 INFO L85 PathProgramCache]: Analyzing trace with hash -12526422, now seen corresponding path program 1 times [2022-11-18 20:42:41,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:41,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376146969] [2022-11-18 20:42:41,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:42:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:42:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:42:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:42:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:42:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:42:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:42:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:42:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:42:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:42:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:42:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:42:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:42:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:42:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 48 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 20:42:45,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376146969] [2022-11-18 20:42:45,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376146969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320454301] [2022-11-18 20:42:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:45,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:45,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:45,655 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:45,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-11-18 20:42:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:46,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-18 20:42:46,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:46,420 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 20:42:46,903 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:42:46,903 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 20:42:46,971 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 20:42:47,538 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 20:42:47,538 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 20:42:47,916 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:42:47,916 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 20:42:47,987 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3715 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3715))) is different from true [2022-11-18 20:42:47,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-11-18 20:43:27,691 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_reserve_~buffer#1.base_BEFORE_CALL_54| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_reserve_~buffer#1.base_BEFORE_CALL_54|) 8))) (and (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_reserve_~buffer#1.base_BEFORE_CALL_54|)) (not (= .cse0 0))))) is different from true [2022-11-18 20:43:50,013 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 35 proven. 76 refuted. 0 times theorem prover too weak. 19 trivial. 12 not checked. [2022-11-18 20:43:50,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:55,612 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3718 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~#requested_capacity~0#1.base| v_ArrVal_3718) |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_reserve_relative_~buffer#1.offset| 8))))) is different from false [2022-11-18 20:43:55,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320454301] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:55,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:55,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 54 [2022-11-18 20:43:55,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177114239] [2022-11-18 20:43:55,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:55,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-18 20:43:55,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:55,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-18 20:43:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4189, Unknown=9, NotChecked=396, Total=4830 [2022-11-18 20:43:55,617 INFO L87 Difference]: Start difference. First operand 549 states and 644 transitions. Second operand has 54 states, 50 states have (on average 4.32) internal successors, (216), 45 states have internal predecessors, (216), 16 states have call successors, (33), 12 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:44:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:46,854 INFO L93 Difference]: Finished difference Result 576 states and 678 transitions. [2022-11-18 20:44:46,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:44:46,855 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 50 states have (on average 4.32) internal successors, (216), 45 states have internal predecessors, (216), 16 states have call successors, (33), 12 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) Word has length 167 [2022-11-18 20:44:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:46,859 INFO L225 Difference]: With dead ends: 576 [2022-11-18 20:44:46,859 INFO L226 Difference]: Without dead ends: 574 [2022-11-18 20:44:46,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 227 SyntacticMatches, 19 SemanticMatches, 119 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 4062 ImplicationChecksByTransitivity, 115.9s TimeCoverageRelationStatistics Valid=1056, Invalid=12703, Unknown=59, NotChecked=702, Total=14520 [2022-11-18 20:44:46,861 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 358 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 3914 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 6374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 3914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2245 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:46,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 2381 Invalid, 6374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 3914 Invalid, 0 Unknown, 2245 Unchecked, 3.1s Time] [2022-11-18 20:44:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-18 20:44:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 561. [2022-11-18 20:44:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.0751708428246014) internal successors, (472), 449 states have internal predecessors, (472), 75 states have call successors, (75), 37 states have call predecessors, (75), 46 states have return successors, (110), 74 states have call predecessors, (110), 74 states have call successors, (110) [2022-11-18 20:44:46,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 657 transitions. [2022-11-18 20:44:46,990 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 657 transitions. Word has length 167 [2022-11-18 20:44:46,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:46,990 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 657 transitions. [2022-11-18 20:44:46,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 50 states have (on average 4.32) internal successors, (216), 45 states have internal predecessors, (216), 16 states have call successors, (33), 12 states have call predecessors, (33), 14 states have return successors, (31), 16 states have call predecessors, (31), 15 states have call successors, (31) [2022-11-18 20:44:46,991 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 657 transitions. [2022-11-18 20:44:46,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:44:46,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:46,993 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:44:47,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:44:47,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:47,204 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash -67023000, now seen corresponding path program 1 times [2022-11-18 20:44:47,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:47,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156736434] [2022-11-18 20:44:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:47,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:44:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:44:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:44:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:44:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:44:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:44:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:44:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:44:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:44:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:44:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:44:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:44:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:44:47,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:44:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 20:44:47,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:47,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156736434] [2022-11-18 20:44:47,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156736434] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:47,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:47,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:44:47,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455765439] [2022-11-18 20:44:47,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:47,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:44:47,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:44:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:44:47,531 INFO L87 Difference]: Start difference. First operand 561 states and 657 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:44:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:48,193 INFO L93 Difference]: Finished difference Result 651 states and 776 transitions. [2022-11-18 20:44:48,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:44:48,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 167 [2022-11-18 20:44:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:48,196 INFO L225 Difference]: With dead ends: 651 [2022-11-18 20:44:48,196 INFO L226 Difference]: Without dead ends: 571 [2022-11-18 20:44:48,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:44:48,197 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 69 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:48,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 407 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:44:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-18 20:44:48,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 561. [2022-11-18 20:44:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 439 states have (on average 1.070615034168565) internal successors, (470), 449 states have internal predecessors, (470), 75 states have call successors, (75), 37 states have call predecessors, (75), 46 states have return successors, (110), 74 states have call predecessors, (110), 74 states have call successors, (110) [2022-11-18 20:44:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 655 transitions. [2022-11-18 20:44:48,325 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 655 transitions. Word has length 167 [2022-11-18 20:44:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:48,326 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 655 transitions. [2022-11-18 20:44:48,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:44:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 655 transitions. [2022-11-18 20:44:48,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:44:48,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:48,327 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:48,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-18 20:44:48,328 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:48,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:48,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1783014698, now seen corresponding path program 1 times [2022-11-18 20:44:48,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:48,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524677108] [2022-11-18 20:44:48,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:48,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:44:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:44:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:44:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:44:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:44:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:44:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:44:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:44:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:44:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:44:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:44:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:44:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:44:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:44:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:49,321 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-18 20:44:49,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524677108] [2022-11-18 20:44:49,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524677108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:49,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:49,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:44:49,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066701400] [2022-11-18 20:44:49,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:49,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:44:49,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:49,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:44:49,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:44:49,323 INFO L87 Difference]: Start difference. First operand 561 states and 655 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:44:50,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:50,490 INFO L93 Difference]: Finished difference Result 577 states and 675 transitions. [2022-11-18 20:44:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:44:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 167 [2022-11-18 20:44:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:50,492 INFO L225 Difference]: With dead ends: 577 [2022-11-18 20:44:50,492 INFO L226 Difference]: Without dead ends: 575 [2022-11-18 20:44:50,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:44:50,493 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 226 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:50,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 886 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:44:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-11-18 20:44:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 567. [2022-11-18 20:44:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 442 states have (on average 1.0701357466063348) internal successors, (473), 452 states have internal predecessors, (473), 77 states have call successors, (77), 38 states have call predecessors, (77), 47 states have return successors, (112), 76 states have call predecessors, (112), 76 states have call successors, (112) [2022-11-18 20:44:50,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 662 transitions. [2022-11-18 20:44:50,629 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 662 transitions. Word has length 167 [2022-11-18 20:44:50,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:50,629 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 662 transitions. [2022-11-18 20:44:50,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 20:44:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 662 transitions. [2022-11-18 20:44:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:44:50,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:50,631 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-18 20:44:50,632 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:50,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:50,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1810888020, now seen corresponding path program 1 times [2022-11-18 20:44:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885879476] [2022-11-18 20:44:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:44:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:44:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:44:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:44:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:44:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:44:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:44:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:44:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:44:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:44:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:44:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:44:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:44:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:44:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:44:52,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885879476] [2022-11-18 20:44:52,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885879476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:44:52,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608388151] [2022-11-18 20:44:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:52,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:44:52,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:44:52,603 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:44:52,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-18 20:44:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2863 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-18 20:44:53,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:44:53,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 20:44:54,431 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 20:44:54,433 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3907 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_3907))) is different from true [2022-11-18 20:44:54,455 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:44:54,455 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 15 treesize of output 21 [2022-11-18 20:44:54,784 INFO L321 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-11-18 20:44:54,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 38 [2022-11-18 20:44:56,108 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-18 20:44:56,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:58,008 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 28 treesize of output 24 [2022-11-18 20:44:58,019 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:44:58,020 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 32 treesize of output 36 [2022-11-18 20:45:00,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608388151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:00,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:00,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 37] total 46 [2022-11-18 20:45:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248003346] [2022-11-18 20:45:00,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:00,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:45:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:45:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=3818, Unknown=3, NotChecked=124, Total=4160 [2022-11-18 20:45:00,387 INFO L87 Difference]: Start difference. First operand 567 states and 662 transitions. Second operand has 46 states, 43 states have (on average 4.372093023255814) internal successors, (188), 38 states have internal predecessors, (188), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) [2022-11-18 20:45:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:07,460 INFO L93 Difference]: Finished difference Result 709 states and 821 transitions. [2022-11-18 20:45:07,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:45:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 4.372093023255814) internal successors, (188), 38 states have internal predecessors, (188), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) Word has length 167 [2022-11-18 20:45:07,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:07,463 INFO L225 Difference]: With dead ends: 709 [2022-11-18 20:45:07,464 INFO L226 Difference]: Without dead ends: 628 [2022-11-18 20:45:07,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 232 SyntacticMatches, 8 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=517, Invalid=8399, Unknown=18, NotChecked=186, Total=9120 [2022-11-18 20:45:07,465 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 241 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 4144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 962 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:07,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 2081 Invalid, 4144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 3000 Invalid, 0 Unknown, 962 Unchecked, 2.6s Time] [2022-11-18 20:45:07,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-18 20:45:07,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 581. [2022-11-18 20:45:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.0635964912280702) internal successors, (485), 465 states have internal predecessors, (485), 76 states have call successors, (76), 40 states have call predecessors, (76), 48 states have return successors, (109), 75 states have call predecessors, (109), 75 states have call successors, (109) [2022-11-18 20:45:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 670 transitions. [2022-11-18 20:45:07,642 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 670 transitions. Word has length 167 [2022-11-18 20:45:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:07,643 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 670 transitions. [2022-11-18 20:45:07,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 4.372093023255814) internal successors, (188), 38 states have internal predecessors, (188), 13 states have call successors, (33), 9 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) [2022-11-18 20:45:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 670 transitions. [2022-11-18 20:45:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:45:07,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:07,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:45:07,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:07,852 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash -641752087, now seen corresponding path program 1 times [2022-11-18 20:45:07,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:07,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532319168] [2022-11-18 20:45:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:07,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:45:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:45:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:45:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:45:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:45:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:45:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:45:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:45:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:45:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:45:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:45:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:45:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:45:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:45:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:08,573 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 20:45:08,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:08,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532319168] [2022-11-18 20:45:08,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532319168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:08,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:45:08,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:45:08,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673012617] [2022-11-18 20:45:08,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:08,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:45:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:08,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:45:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:45:08,575 INFO L87 Difference]: Start difference. First operand 581 states and 670 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:45:09,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:09,387 INFO L93 Difference]: Finished difference Result 799 states and 927 transitions. [2022-11-18 20:45:09,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:45:09,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 167 [2022-11-18 20:45:09,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:09,390 INFO L225 Difference]: With dead ends: 799 [2022-11-18 20:45:09,390 INFO L226 Difference]: Without dead ends: 565 [2022-11-18 20:45:09,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:45:09,392 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 89 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:09,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 504 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:45:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-18 20:45:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 561. [2022-11-18 20:45:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 443 states have (on average 1.0519187358916477) internal successors, (466), 452 states have internal predecessors, (466), 71 states have call successors, (71), 38 states have call predecessors, (71), 46 states have return successors, (104), 70 states have call predecessors, (104), 70 states have call successors, (104) [2022-11-18 20:45:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 641 transitions. [2022-11-18 20:45:09,530 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 641 transitions. Word has length 167 [2022-11-18 20:45:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:09,531 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 641 transitions. [2022-11-18 20:45:09,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:45:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 641 transitions. [2022-11-18 20:45:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:45:09,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:09,532 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:09,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-18 20:45:09,532 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:09,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:09,533 INFO L85 PathProgramCache]: Analyzing trace with hash -856947862, now seen corresponding path program 2 times [2022-11-18 20:45:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:09,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746765473] [2022-11-18 20:45:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:45:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:45:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:45:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:45:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:45:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:45:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:45:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:45:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:45:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:45:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:45:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:45:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:45:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:45:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:45:13,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746765473] [2022-11-18 20:45:13,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746765473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:13,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821839726] [2022-11-18 20:45:13,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:45:13,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:13,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:13,042 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:13,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 20:45:14,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:45:14,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:14,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-18 20:45:14,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:14,252 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 20:45:20,901 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 20:45:20,906 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4064 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4064) |c_#memory_$Pointer$.base|)) is different from true [2022-11-18 20:45:20,927 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:45:20,927 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 15 treesize of output 21 [2022-11-18 20:45:26,992 INFO L321 Elim1Store]: treesize reduction 4, result has 94.5 percent of original size [2022-11-18 20:45:26,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 140 treesize of output 152 [2022-11-18 20:45:27,025 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:45:27,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 88 [2022-11-18 20:45:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 33 proven. 80 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:45:27,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:30,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2022-11-18 20:45:30,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:45:30,733 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 2 case distinctions, treesize of input 64 treesize of output 68 [2022-11-18 20:45:33,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821839726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:33,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:33,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 51 [2022-11-18 20:45:33,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605014076] [2022-11-18 20:45:33,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:33,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:45:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:33,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:45:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=4332, Unknown=4, NotChecked=132, Total=4692 [2022-11-18 20:45:33,188 INFO L87 Difference]: Start difference. First operand 561 states and 641 transitions. Second operand has 51 states, 48 states have (on average 3.8333333333333335) internal successors, (184), 42 states have internal predecessors, (184), 18 states have call successors, (34), 11 states have call predecessors, (34), 12 states have return successors, (32), 18 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:45:48,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:48,444 INFO L93 Difference]: Finished difference Result 767 states and 881 transitions. [2022-11-18 20:45:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-18 20:45:48,445 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 3.8333333333333335) internal successors, (184), 42 states have internal predecessors, (184), 18 states have call successors, (34), 11 states have call predecessors, (34), 12 states have return successors, (32), 18 states have call predecessors, (32), 16 states have call successors, (32) Word has length 167 [2022-11-18 20:45:48,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:48,448 INFO L225 Difference]: With dead ends: 767 [2022-11-18 20:45:48,448 INFO L226 Difference]: Without dead ends: 697 [2022-11-18 20:45:48,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 230 SyntacticMatches, 16 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=905, Invalid=11724, Unknown=31, NotChecked=222, Total=12882 [2022-11-18 20:45:48,451 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 289 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 4692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1441 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:48,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2684 Invalid, 4692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3112 Invalid, 0 Unknown, 1441 Unchecked, 2.5s Time] [2022-11-18 20:45:48,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-18 20:45:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 595. [2022-11-18 20:45:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 466 states have (on average 1.053648068669528) internal successors, (491), 476 states have internal predecessors, (491), 78 states have call successors, (78), 42 states have call predecessors, (78), 50 states have return successors, (114), 76 states have call predecessors, (114), 77 states have call successors, (114) [2022-11-18 20:45:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 683 transitions. [2022-11-18 20:45:48,599 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 683 transitions. Word has length 167 [2022-11-18 20:45:48,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:48,600 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 683 transitions. [2022-11-18 20:45:48,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 3.8333333333333335) internal successors, (184), 42 states have internal predecessors, (184), 18 states have call successors, (34), 11 states have call predecessors, (34), 12 states have return successors, (32), 18 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:45:48,600 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 683 transitions. [2022-11-18 20:45:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 20:45:48,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:48,602 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:48,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-11-18 20:45:48,814 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:48,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1409433324, now seen corresponding path program 1 times [2022-11-18 20:45:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:48,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852159244] [2022-11-18 20:45:48,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:48,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:45:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:45:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:45:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:45:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:45:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:45:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:45:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:45:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:45:51,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:45:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:45:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:45:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:45:51,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:45:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 32 proven. 39 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-18 20:45:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852159244] [2022-11-18 20:45:51,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852159244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:51,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273418251] [2022-11-18 20:45:51,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:51,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:51,917 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:51,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 20:45:52,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:52,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-18 20:45:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:52,825 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 20:46:00,066 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4156 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.base| Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_add_size_checked_aws_add_u64_checked_~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_4156)))) is different from true [2022-11-18 20:46:00,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-18 20:46:13,874 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 58 proven. 27 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 20:46:13,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:46:17,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273418251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:46:17,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:46:17,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 51 [2022-11-18 20:46:17,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045292435] [2022-11-18 20:46:17,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:46:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:46:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:46:17,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=3707, Unknown=3, NotChecked=122, Total=4032 [2022-11-18 20:46:17,294 INFO L87 Difference]: Start difference. First operand 595 states and 683 transitions. Second operand has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 42 states have internal predecessors, (191), 18 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:46:26,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:26,356 INFO L93 Difference]: Finished difference Result 684 states and 783 transitions. [2022-11-18 20:46:26,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:46:26,357 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 42 states have internal predecessors, (191), 18 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) Word has length 167 [2022-11-18 20:46:26,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:26,360 INFO L225 Difference]: With dead ends: 684 [2022-11-18 20:46:26,360 INFO L226 Difference]: Without dead ends: 586 [2022-11-18 20:46:26,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 235 SyntacticMatches, 15 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2785 ImplicationChecksByTransitivity, 30.5s TimeCoverageRelationStatistics Valid=599, Invalid=9500, Unknown=5, NotChecked=198, Total=10302 [2022-11-18 20:46:26,363 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 343 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1348 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:26,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1768 Invalid, 4057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2483 Invalid, 0 Unknown, 1348 Unchecked, 2.2s Time] [2022-11-18 20:46:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-11-18 20:46:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 550. [2022-11-18 20:46:26,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 433 states have (on average 1.0531177829099307) internal successors, (456), 441 states have internal predecessors, (456), 69 states have call successors, (69), 39 states have call predecessors, (69), 47 states have return successors, (103), 69 states have call predecessors, (103), 68 states have call successors, (103) [2022-11-18 20:46:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 628 transitions. [2022-11-18 20:46:26,510 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 628 transitions. Word has length 167 [2022-11-18 20:46:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:26,511 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 628 transitions. [2022-11-18 20:46:26,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 4.0638297872340425) internal successors, (191), 42 states have internal predecessors, (191), 18 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) [2022-11-18 20:46:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 628 transitions. [2022-11-18 20:46:26,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-18 20:46:26,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:26,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:46:26,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-11-18 20:46:26,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-11-18 20:46:26,713 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:26,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1392068675, now seen corresponding path program 1 times [2022-11-18 20:46:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:26,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954498935] [2022-11-18 20:46:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:26,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:46:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:46:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:46:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:46:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:46:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:46:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:46:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:46:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:46:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:46:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:46:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:46:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:46:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:46:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:46:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-18 20:46:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:32,602 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 32 proven. 40 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 20:46:32,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954498935] [2022-11-18 20:46:32,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954498935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:46:32,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260278211] [2022-11-18 20:46:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:32,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:32,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:46:32,604 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:46:32,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 20:46:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:33,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:46:33,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:46:33,493 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 17 treesize of output 13 [2022-11-18 20:46:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-18 20:46:39,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:46:39,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260278211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:39,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:46:39,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [26] total 33 [2022-11-18 20:46:39,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758274192] [2022-11-18 20:46:39,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:39,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:46:39,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:39,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:46:39,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=949, Unknown=2, NotChecked=0, Total=1056 [2022-11-18 20:46:39,557 INFO L87 Difference]: Start difference. First operand 550 states and 628 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:46:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:39,837 INFO L93 Difference]: Finished difference Result 660 states and 748 transitions. [2022-11-18 20:46:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:46:39,838 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 168 [2022-11-18 20:46:39,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:39,840 INFO L225 Difference]: With dead ends: 660 [2022-11-18 20:46:39,840 INFO L226 Difference]: Without dead ends: 552 [2022-11-18 20:46:39,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=116, Invalid=1072, Unknown=2, NotChecked=0, Total=1190 [2022-11-18 20:46:39,842 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 51 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:39,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 805 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 11 Invalid, 0 Unknown, 68 Unchecked, 0.0s Time] [2022-11-18 20:46:39,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-18 20:46:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 548. [2022-11-18 20:46:39,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 433 states have (on average 1.0531177829099307) internal successors, (456), 440 states have internal predecessors, (456), 68 states have call successors, (68), 39 states have call predecessors, (68), 46 states have return successors, (96), 68 states have call predecessors, (96), 67 states have call successors, (96) [2022-11-18 20:46:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 620 transitions. [2022-11-18 20:46:39,976 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 620 transitions. Word has length 168 [2022-11-18 20:46:39,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:39,976 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 620 transitions. [2022-11-18 20:46:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:46:39,976 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 620 transitions. [2022-11-18 20:46:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-18 20:46:39,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:39,978 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-11-18 20:46:39,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-18 20:46:40,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:40,179 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:46:40,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1734308343, now seen corresponding path program 1 times [2022-11-18 20:46:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:40,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765525032] [2022-11-18 20:46:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:46:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:46:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:46:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:46:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:46:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:46:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:46:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:46:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:46:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-18 20:46:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:46:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 20:46:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-18 20:46:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 20:46:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:46:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-18 20:46:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 21 proven. 62 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:46:49,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765525032] [2022-11-18 20:46:49,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765525032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:46:49,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104816722] [2022-11-18 20:46:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:49,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:46:49,598 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:46:49,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2183892-69d2-4e56-843b-7088d35d3cfa/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 20:46:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:50,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-18 20:46:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:46:50,620 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 20:46:56,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2022-11-18 20:46:56,583 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4477 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_4477) |c_#memory_int|)) is different from true [2022-11-18 20:46:56,614 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:46:56,614 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 38 treesize of output 38 [2022-11-18 20:46:56,622 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 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-18 20:47:00,121 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:47:00,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 65 treesize of output 45 [2022-11-18 20:47:00,183 WARN L859 $PredicateComparison]: unable to prove that (exists ((|can_fail_realloc_#Ultimate.C_realloc_#res#1.base| Int)) (and (exists ((v_ArrVal_4478 (Array Int Int))) (= (store |c_old(#memory_int)| |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| v_ArrVal_4478) |c_#memory_int|)) (< |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-18 20:47:00,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:00,239 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 20:47:00,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 67 [2022-11-18 20:47:00,259 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 20:47:00,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:00,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:47:00,507 INFO L321 Elim1Store]: treesize reduction 43, result has 25.9 percent of original size [2022-11-18 20:47:00,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 65 treesize of output 56 [2022-11-18 20:47:00,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:47:00,695 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 49 treesize of output 40