./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- 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 18:39:26,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:39:26,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:39:26,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:39:26,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:39:26,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:39:26,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:39:26,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:39:26,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:39:26,309 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:39:26,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:39:26,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:39:26,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:39:26,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:39:26,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:39:26,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:39:26,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:39:26,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:39:26,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:39:26,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:39:26,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:39:26,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:39:26,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:39:26,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:39:26,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:39:26,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:39:26,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:39:26,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:39:26,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:39:26,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:39:26,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:39:26,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:39:26,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:39:26,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:39:26,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:39:26,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:39:26,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:39:26,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:39:26,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:39:26,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:39:26,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:39:26,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 18:39:26,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:39:26,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:39:26,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:39:26,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:39:26,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:39:26,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:39:26,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:39:26,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:39:26,449 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:39:26,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:39:26,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:39:26,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:39:26,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:39:26,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:39:26,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:39:26,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:39:26,452 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:39:26,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:39:26,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:39:26,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:39:26,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:39:26,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:26,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:39:26,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:39:26,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:39:26,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:39:26,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:39:26,455 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:39:26,456 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:39:26,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:39:26,456 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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2022-11-18 18:39:26,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:39:26,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:39:26,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:39:26,831 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:39:26,832 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:39:26,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-18 18:39:26,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/data/9873105fb/d0c6219e8a9346708edf703f81aa25bd/FLAGee4c9f47c [2022-11-18 18:39:28,036 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:39:28,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2022-11-18 18:39:28,099 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/data/9873105fb/d0c6219e8a9346708edf703f81aa25bd/FLAGee4c9f47c [2022-11-18 18:39:28,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/data/9873105fb/d0c6219e8a9346708edf703f81aa25bd [2022-11-18 18:39:28,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:39:28,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:39:28,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:28,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:39:28,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:39:28,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:28" (1/1) ... [2022-11-18 18:39:28,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d468593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:28, skipping insertion in model container [2022-11-18 18:39:28,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:39:28" (1/1) ... [2022-11-18 18:39:28,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:39:28,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:39:28,672 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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-18 18:39:28,682 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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-18 18:39:29,890 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,891 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,892 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,893 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,895 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,917 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,918 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,920 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:29,922 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:30,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:39:30,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:39:30,420 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:39:30,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:39:30,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:39:30,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:39:30,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:39:30,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:39:30,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:39:30,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:39:30,624 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:39:30,845 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:30,853 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:31,126 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:39:31,160 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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2022-11-18 18:39:31,161 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_f6f1a0d4-7407-460c-a86d-2c0f0accf742/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2022-11-18 18:39:31,207 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,208 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,208 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,209 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,210 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,220 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,220 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,222 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,223 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,267 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 18:39:31,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 18:39:31,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 18:39:31,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 18:39:31,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 18:39:31,272 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 18:39:31,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 18:39:31,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 18:39:31,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 18:39:31,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 18:39:31,303 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 18:39:31,405 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,407 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 18:39:31,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:39:31,807 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:39:31,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31 WrapperNode [2022-11-18 18:39:31,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:39:31,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:31,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:39:31,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:39:31,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:31,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,122 INFO L138 Inliner]: procedures = 690, calls = 2614, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2022-11-18 18:39:32,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:39:32,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:39:32,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:39:32,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:39:32,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:39:32,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:39:32,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:39:32,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:39:32,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (1/1) ... [2022-11-18 18:39:32,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:39:32,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:32,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:39:32,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:39:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-18 18:39:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-18 18:39:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:39:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:39:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:39:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:39:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:39:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:39:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:39:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:39:32,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:39:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 18:39:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 18:39:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 18:39:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 18:39:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:39:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:39:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:39:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 18:39:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 18:39:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:39:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:39:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2022-11-18 18:39:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2022-11-18 18:39:32,834 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:39:32,837 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:39:34,592 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:39:34,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:39:34,601 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:39:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:34 BoogieIcfgContainer [2022-11-18 18:39:34,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:39:34,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:39:34,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:39:34,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:39:34,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:39:28" (1/3) ... [2022-11-18 18:39:34,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39000f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:34, skipping insertion in model container [2022-11-18 18:39:34,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:39:31" (2/3) ... [2022-11-18 18:39:34,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39000f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:39:34, skipping insertion in model container [2022-11-18 18:39:34,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:34" (3/3) ... [2022-11-18 18:39:34,616 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2022-11-18 18:39:34,642 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:39:34,643 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:39:34,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:39:34,740 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;@37b753bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:39:34,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:39:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-18 18:39:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 18:39:34,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:34,757 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] [2022-11-18 18:39:34,757 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:34,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2742655, now seen corresponding path program 1 times [2022-11-18 18:39:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:34,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496349984] [2022-11-18 18:39:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:34,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:35,716 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 18:39:35,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:35,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496349984] [2022-11-18 18:39:35,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496349984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:35,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:35,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:39:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747776820] [2022-11-18 18:39:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:35,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:39:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:35,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:39:35,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:35,782 INFO L87 Difference]: Start difference. First operand has 73 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:36,129 INFO L93 Difference]: Finished difference Result 141 states and 189 transitions. [2022-11-18 18:39:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:36,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-11-18 18:39:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:36,158 INFO L225 Difference]: With dead ends: 141 [2022-11-18 18:39:36,158 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 18:39:36,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:39:36,166 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 35 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:36,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:39:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 18:39:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-11-18 18:39:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 45 states have internal predecessors, (52), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 18:39:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2022-11-18 18:39:36,242 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 31 [2022-11-18 18:39:36,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:36,243 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2022-11-18 18:39:36,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:36,244 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2022-11-18 18:39:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 18:39:36,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:36,246 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] [2022-11-18 18:39:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:39:36,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:36,247 INFO L85 PathProgramCache]: Analyzing trace with hash -873311295, now seen corresponding path program 1 times [2022-11-18 18:39:36,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:36,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846738958] [2022-11-18 18:39:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:36,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:37,189 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 18:39:37,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:37,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846738958] [2022-11-18 18:39:37,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846738958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:37,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:37,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:39:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302708676] [2022-11-18 18:39:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:37,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:37,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:37,193 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:37,539 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2022-11-18 18:39:37,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:39:37,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-11-18 18:39:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:37,543 INFO L225 Difference]: With dead ends: 121 [2022-11-18 18:39:37,543 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 18:39:37,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:37,545 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 58 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:37,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 119 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:39:37,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 18:39:37,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-18 18:39:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.173913043478261) internal successors, (54), 48 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2022-11-18 18:39:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2022-11-18 18:39:37,559 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 31 [2022-11-18 18:39:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:37,560 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2022-11-18 18:39:37,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2022-11-18 18:39:37,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 18:39:37,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:37,562 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] [2022-11-18 18:39:37,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:39:37,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash 355281356, now seen corresponding path program 1 times [2022-11-18 18:39:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843733724] [2022-11-18 18:39:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:38,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:38,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:38,964 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 18:39:38,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843733724] [2022-11-18 18:39:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843733724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:38,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:38,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082028655] [2022-11-18 18:39:38,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:38,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:38,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:38,976 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:39,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:39,662 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2022-11-18 18:39:39,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2022-11-18 18:39:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:39,665 INFO L225 Difference]: With dead ends: 81 [2022-11-18 18:39:39,665 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 18:39:39,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:39:39,667 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 62 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:39,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 250 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:39:39,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 18:39:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2022-11-18 18:39:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 55 states have internal predecessors, (60), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-18 18:39:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2022-11-18 18:39:39,682 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 37 [2022-11-18 18:39:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:39,682 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2022-11-18 18:39:39,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:39,683 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2022-11-18 18:39:39,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:39:39,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:39,685 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] [2022-11-18 18:39:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:39:39,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:39,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1397933292, now seen corresponding path program 1 times [2022-11-18 18:39:39,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:39,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280513203] [2022-11-18 18:39:39,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:39,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:41,183 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 18:39:41,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:41,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280513203] [2022-11-18 18:39:41,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280513203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:41,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:41,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:39:41,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975601585] [2022-11-18 18:39:41,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:41,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:41,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:41,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:41,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:41,186 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:41,680 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2022-11-18 18:39:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:39:41,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-18 18:39:41,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:41,682 INFO L225 Difference]: With dead ends: 162 [2022-11-18 18:39:41,682 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 18:39:41,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:41,684 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 115 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:41,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 120 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:39:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 18:39:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2022-11-18 18:39:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 60 states have internal predecessors, (67), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-18 18:39:41,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2022-11-18 18:39:41,708 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 41 [2022-11-18 18:39:41,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:41,709 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2022-11-18 18:39:41,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:41,709 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2022-11-18 18:39:41,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:39:41,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:41,716 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] [2022-11-18 18:39:41,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:39:41,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:41,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1139767854, now seen corresponding path program 1 times [2022-11-18 18:39:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:41,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256552205] [2022-11-18 18:39:41,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:41,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:45,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:46,817 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 18:39:46,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256552205] [2022-11-18 18:39:46,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256552205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:46,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:46,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:46,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401287952] [2022-11-18 18:39:46,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:46,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:46,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:46,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:46,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:46,820 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:48,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:48,129 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2022-11-18 18:39:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:39:48,130 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-18 18:39:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:48,132 INFO L225 Difference]: With dead ends: 166 [2022-11-18 18:39:48,132 INFO L226 Difference]: Without dead ends: 102 [2022-11-18 18:39:48,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:39:48,134 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 148 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:48,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 223 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:39:48,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-18 18:39:48,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2022-11-18 18:39:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 72 states have internal predecessors, (84), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-18 18:39:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 118 transitions. [2022-11-18 18:39:48,151 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 118 transitions. Word has length 41 [2022-11-18 18:39:48,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:48,152 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 118 transitions. [2022-11-18 18:39:48,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:48,152 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 118 transitions. [2022-11-18 18:39:48,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:39:48,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:48,154 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] [2022-11-18 18:39:48,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:39:48,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:48,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1875335764, now seen corresponding path program 1 times [2022-11-18 18:39:48,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:48,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002028973] [2022-11-18 18:39:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:51,442 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 18:39:51,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:51,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002028973] [2022-11-18 18:39:51,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002028973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:51,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:51,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:39:51,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554966549] [2022-11-18 18:39:51,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:51,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:39:51,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:51,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:39:51,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:39:51,444 INFO L87 Difference]: Start difference. First operand 95 states and 118 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:52,637 INFO L93 Difference]: Finished difference Result 199 states and 247 transitions. [2022-11-18 18:39:52,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:39:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-18 18:39:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:52,639 INFO L225 Difference]: With dead ends: 199 [2022-11-18 18:39:52,639 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 18:39:52,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:39:52,641 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 168 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:52,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 207 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:39:52,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 18:39:52,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2022-11-18 18:39:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 71 states have internal predecessors, (83), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2022-11-18 18:39:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2022-11-18 18:39:52,653 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 41 [2022-11-18 18:39:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:52,653 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2022-11-18 18:39:52,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:52,654 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2022-11-18 18:39:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:39:52,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:52,655 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] [2022-11-18 18:39:52,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:39:52,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:52,656 INFO L85 PathProgramCache]: Analyzing trace with hash 28822424, now seen corresponding path program 1 times [2022-11-18 18:39:52,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:52,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750742347] [2022-11-18 18:39:52,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:52,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:55,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:39:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:56,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750742347] [2022-11-18 18:39:56,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750742347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:56,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977813644] [2022-11-18 18:39:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:56,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:56,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:39:56,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:39:56,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:39:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:57,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 18:39:57,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:57,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:57,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:57,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:39:58,072 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 18:39:58,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:58,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977813644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:58,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:39:58,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-11-18 18:39:58,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704190426] [2022-11-18 18:39:58,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:39:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:39:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:39:58,075 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:58,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:58,173 INFO L93 Difference]: Finished difference Result 216 states and 269 transitions. [2022-11-18 18:39:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:39:58,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2022-11-18 18:39:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:58,176 INFO L225 Difference]: With dead ends: 216 [2022-11-18 18:39:58,176 INFO L226 Difference]: Without dead ends: 119 [2022-11-18 18:39:58,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:39:58,178 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 25 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:58,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 396 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 94 Unchecked, 0.1s Time] [2022-11-18 18:39:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-18 18:39:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-18 18:39:58,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.2307692307692308) internal successors, (112), 95 states have internal predecessors, (112), 16 states have call successors, (16), 8 states have call predecessors, (16), 11 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-18 18:39:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 148 transitions. [2022-11-18 18:39:58,195 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 148 transitions. Word has length 41 [2022-11-18 18:39:58,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:58,196 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 148 transitions. [2022-11-18 18:39:58,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 148 transitions. [2022-11-18 18:39:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:39:58,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:58,201 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] [2022-11-18 18:39:58,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:39:58,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 286987862, now seen corresponding path program 1 times [2022-11-18 18:39:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:58,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587339129] [2022-11-18 18:39:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:39:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:39:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:59,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:39:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:39:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:59,264 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 18:39:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587339129] [2022-11-18 18:39:59,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587339129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:59,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:59,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:39:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628261928] [2022-11-18 18:39:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:39:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:59,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:39:59,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:39:59,268 INFO L87 Difference]: Start difference. First operand 119 states and 148 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:59,741 INFO L93 Difference]: Finished difference Result 207 states and 259 transitions. [2022-11-18 18:39:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:39:59,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-11-18 18:39:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:59,744 INFO L225 Difference]: With dead ends: 207 [2022-11-18 18:39:59,744 INFO L226 Difference]: Without dead ends: 123 [2022-11-18 18:39:59,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:59,745 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 67 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:59,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 120 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:39:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-18 18:39:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2022-11-18 18:39:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 86 states have internal predecessors, (99), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-18 18:39:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 134 transitions. [2022-11-18 18:39:59,768 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 134 transitions. Word has length 41 [2022-11-18 18:39:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:59,768 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 134 transitions. [2022-11-18 18:39:59,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:39:59,769 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 134 transitions. [2022-11-18 18:39:59,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:39:59,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:59,775 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] [2022-11-18 18:39:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:39:59,776 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 379920541, now seen corresponding path program 1 times [2022-11-18 18:39:59,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:59,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432180016] [2022-11-18 18:39:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:00,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:40:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:40:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:00,898 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 18:40:00,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432180016] [2022-11-18 18:40:00,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432180016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:00,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:00,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:40:00,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481962476] [2022-11-18 18:40:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:40:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:40:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:40:00,902 INFO L87 Difference]: Start difference. First operand 110 states and 134 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:40:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:01,641 INFO L93 Difference]: Finished difference Result 132 states and 157 transitions. [2022-11-18 18:40:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:40:01,642 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2022-11-18 18:40:01,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:01,643 INFO L225 Difference]: With dead ends: 132 [2022-11-18 18:40:01,643 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 18:40:01,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:40:01,645 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 73 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:01,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 316 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:40:01,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 18:40:01,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2022-11-18 18:40:01,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 85 states have (on average 1.188235294117647) internal successors, (101), 88 states have internal predecessors, (101), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2022-11-18 18:40:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2022-11-18 18:40:01,656 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 43 [2022-11-18 18:40:01,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:01,657 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2022-11-18 18:40:01,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:40:01,657 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2022-11-18 18:40:01,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 18:40:01,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:01,659 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] [2022-11-18 18:40:01,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:40:01,659 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1080985119, now seen corresponding path program 1 times [2022-11-18 18:40:01,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395286128] [2022-11-18 18:40:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:01,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:40:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:40:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:06,868 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 18:40:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:06,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395286128] [2022-11-18 18:40:06,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395286128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:06,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:06,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 18:40:06,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906558869] [2022-11-18 18:40:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:06,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 18:40:06,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 18:40:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:40:06,871 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:40:09,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:09,546 INFO L93 Difference]: Finished difference Result 135 states and 158 transitions. [2022-11-18 18:40:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 18:40:09,547 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2022-11-18 18:40:09,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:09,549 INFO L225 Difference]: With dead ends: 135 [2022-11-18 18:40:09,549 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 18:40:09,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 18:40:09,551 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:09,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 382 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 18:40:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 18:40:09,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 105. [2022-11-18 18:40:09,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.2) internal successors, (96), 82 states have internal predecessors, (96), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-18 18:40:09,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2022-11-18 18:40:09,564 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 43 [2022-11-18 18:40:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:09,565 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2022-11-18 18:40:09,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.875) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:40:09,565 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2022-11-18 18:40:09,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-18 18:40:09,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:09,566 INFO L195 NwaCegarLoop]: trace histogram [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 18:40:09,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:40:09,567 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:09,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash -471568136, now seen corresponding path program 1 times [2022-11-18 18:40:09,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:09,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331432460] [2022-11-18 18:40:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:09,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:09,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:10,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:40:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:10,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331432460] [2022-11-18 18:40:10,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331432460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:10,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:10,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:40:10,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139251707] [2022-11-18 18:40:10,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:40:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:10,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:40:10,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:40:10,120 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:40:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:10,529 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2022-11-18 18:40:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:40:10,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2022-11-18 18:40:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:10,532 INFO L225 Difference]: With dead ends: 137 [2022-11-18 18:40:10,532 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 18:40:10,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:40:10,533 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:10,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 93 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:40:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 18:40:10,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-18 18:40:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 80 states have (on average 1.1875) internal successors, (95), 82 states have internal predecessors, (95), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-18 18:40:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2022-11-18 18:40:10,549 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 52 [2022-11-18 18:40:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:10,552 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2022-11-18 18:40:10,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 18:40:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2022-11-18 18:40:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 18:40:10,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:10,554 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] [2022-11-18 18:40:10,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:40:10,554 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 416252355, now seen corresponding path program 1 times [2022-11-18 18:40:10,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:10,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868590650] [2022-11-18 18:40:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:11,469 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:40:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:11,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868590650] [2022-11-18 18:40:11,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868590650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:11,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:11,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:40:11,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918460456] [2022-11-18 18:40:11,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:11,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:40:11,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:11,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:40:11,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:40:11,472 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 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 18:40:12,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:12,028 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2022-11-18 18:40:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:40:12,029 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 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 58 [2022-11-18 18:40:12,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:12,030 INFO L225 Difference]: With dead ends: 121 [2022-11-18 18:40:12,030 INFO L226 Difference]: Without dead ends: 119 [2022-11-18 18:40:12,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 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 18:40:12,031 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:12,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 234 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:40:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-18 18:40:12,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2022-11-18 18:40:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 93 states have internal predecessors, (104), 16 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (20), 15 states have call predecessors, (20), 15 states have call successors, (20) [2022-11-18 18:40:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 140 transitions. [2022-11-18 18:40:12,042 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 140 transitions. Word has length 58 [2022-11-18 18:40:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:12,043 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 140 transitions. [2022-11-18 18:40:12,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 6 states have internal predecessors, (34), 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 18:40:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 140 transitions. [2022-11-18 18:40:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:40:12,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:12,044 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] [2022-11-18 18:40:12,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:40:12,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 361728585, now seen corresponding path program 1 times [2022-11-18 18:40:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:12,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415193421] [2022-11-18 18:40:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:12,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:16,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:16,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:40:16,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:16,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415193421] [2022-11-18 18:40:16,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415193421] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:16,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952764188] [2022-11-18 18:40:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:16,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:16,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:16,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:40:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:17,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 18:40:17,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:17,824 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 18:40:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:40:19,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:20,069 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:40:20,071 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 129 treesize of output 1 [2022-11-18 18:40:20,589 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-11-18 18:40:20,589 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 30 treesize of output 25 [2022-11-18 18:40:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:40:20,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952764188] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:20,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:40:20,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 14] total 38 [2022-11-18 18:40:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526015235] [2022-11-18 18:40:20,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:20,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:40:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:40:20,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 18:40:20,699 INFO L87 Difference]: Start difference. First operand 118 states and 140 transitions. Second operand has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-18 18:40:25,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:25,457 INFO L93 Difference]: Finished difference Result 224 states and 277 transitions. [2022-11-18 18:40:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:40:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 62 [2022-11-18 18:40:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:25,460 INFO L225 Difference]: With dead ends: 224 [2022-11-18 18:40:25,460 INFO L226 Difference]: Without dead ends: 185 [2022-11-18 18:40:25,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=620, Invalid=3412, Unknown=0, NotChecked=0, Total=4032 [2022-11-18 18:40:25,463 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 380 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 643 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:25,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 431 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1377 Invalid, 0 Unknown, 643 Unchecked, 1.7s Time] [2022-11-18 18:40:25,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-18 18:40:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2022-11-18 18:40:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 115 states have internal predecessors, (130), 18 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (27), 18 states have call predecessors, (27), 17 states have call successors, (27) [2022-11-18 18:40:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 175 transitions. [2022-11-18 18:40:25,479 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 175 transitions. Word has length 62 [2022-11-18 18:40:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:25,480 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 175 transitions. [2022-11-18 18:40:25,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 33 states have (on average 2.727272727272727) internal successors, (90), 31 states have internal predecessors, (90), 9 states have call successors, (16), 5 states have call predecessors, (16), 9 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-18 18:40:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 175 transitions. [2022-11-18 18:40:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:40:25,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:25,481 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] [2022-11-18 18:40:25,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:25,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash -918135093, now seen corresponding path program 1 times [2022-11-18 18:40:25,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:25,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109862358] [2022-11-18 18:40:25,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:40:27,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109862358] [2022-11-18 18:40:27,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109862358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431220210] [2022-11-18 18:40:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:27,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:27,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:27,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:27,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:40:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:28,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 18:40:28,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:28,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:28,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:28,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:40:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:40:30,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:30,745 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 346 treesize of output 334 [2022-11-18 18:40:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:40:31,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431220210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:40:31,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:40:31,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 14] total 38 [2022-11-18 18:40:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732917578] [2022-11-18 18:40:31,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:31,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-18 18:40:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-18 18:40:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 18:40:31,409 INFO L87 Difference]: Start difference. First operand 145 states and 175 transitions. Second operand has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:40:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:33,843 INFO L93 Difference]: Finished difference Result 280 states and 330 transitions. [2022-11-18 18:40:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:40:33,844 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 62 [2022-11-18 18:40:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:33,846 INFO L225 Difference]: With dead ends: 280 [2022-11-18 18:40:33,846 INFO L226 Difference]: Without dead ends: 227 [2022-11-18 18:40:33,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 108 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=364, Invalid=2716, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 18:40:33,850 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 678 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 486 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 515 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 672 Invalid, 0 Unknown, 486 Unchecked, 1.0s Time] [2022-11-18 18:40:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-18 18:40:33,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 189. [2022-11-18 18:40:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 154 states have internal predecessors, (173), 20 states have call successors, (20), 13 states have call predecessors, (20), 20 states have return successors, (32), 21 states have call predecessors, (32), 19 states have call successors, (32) [2022-11-18 18:40:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2022-11-18 18:40:33,871 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 62 [2022-11-18 18:40:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:33,872 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2022-11-18 18:40:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.5) internal successors, (85), 31 states have internal predecessors, (85), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:40:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2022-11-18 18:40:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:40:33,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:33,874 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] [2022-11-18 18:40:33,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 18:40:34,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:40:34,087 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:34,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:34,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1530318863, now seen corresponding path program 1 times [2022-11-18 18:40:34,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:34,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568415483] [2022-11-18 18:40:34,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:34,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:36,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:36,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:37,673 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:40:37,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:37,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568415483] [2022-11-18 18:40:37,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568415483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:37,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695932435] [2022-11-18 18:40:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:37,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:37,676 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:37,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:40:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:38,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 18:40:38,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:40:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:40:40,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:41,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:40:41,598 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 11603 treesize of output 1 [2022-11-18 18:40:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695932435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:41,941 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:41,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 36 [2022-11-18 18:40:41,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498636763] [2022-11-18 18:40:41,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:41,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 18:40:41,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 18:40:41,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1832, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 18:40:41,944 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand has 36 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 29 states have internal predecessors, (74), 11 states have call successors, (15), 5 states have call predecessors, (15), 9 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-18 18:40:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:46,463 INFO L93 Difference]: Finished difference Result 294 states and 355 transitions. [2022-11-18 18:40:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:40:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 29 states have internal predecessors, (74), 11 states have call successors, (15), 5 states have call predecessors, (15), 9 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) Word has length 62 [2022-11-18 18:40:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:46,470 INFO L225 Difference]: With dead ends: 294 [2022-11-18 18:40:46,470 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 18:40:46,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 76 SyntacticMatches, 4 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=421, Invalid=4536, Unknown=13, NotChecked=0, Total=4970 [2022-11-18 18:40:46,473 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 325 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 2061 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:46,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 696 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2061 Invalid, 0 Unknown, 550 Unchecked, 2.2s Time] [2022-11-18 18:40:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 18:40:46,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 186. [2022-11-18 18:40:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 145 states have (on average 1.1586206896551725) internal successors, (168), 151 states have internal predecessors, (168), 20 states have call successors, (20), 13 states have call predecessors, (20), 20 states have return successors, (32), 21 states have call predecessors, (32), 19 states have call successors, (32) [2022-11-18 18:40:46,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 220 transitions. [2022-11-18 18:40:46,497 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 220 transitions. Word has length 62 [2022-11-18 18:40:46,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:46,498 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 220 transitions. [2022-11-18 18:40:46,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 29 states have internal predecessors, (74), 11 states have call successors, (15), 5 states have call predecessors, (15), 9 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-18 18:40:46,498 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 220 transitions. [2022-11-18 18:40:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 18:40:46,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:46,500 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] [2022-11-18 18:40:46,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 18:40:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 18:40:46,725 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:46,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1953106119, now seen corresponding path program 1 times [2022-11-18 18:40:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:46,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969291463] [2022-11-18 18:40:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:46,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:40:47,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:47,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969291463] [2022-11-18 18:40:47,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969291463] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:47,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335001582] [2022-11-18 18:40:47,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:47,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:47,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:47,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:47,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:40:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:47,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:40:47,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:40:47,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:40:47,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335001582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:47,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:40:47,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-18 18:40:47,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151722795] [2022-11-18 18:40:47,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:47,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:40:47,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:47,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:40:47,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:40:47,683 INFO L87 Difference]: Start difference. First operand 186 states and 220 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 18:40:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:47,722 INFO L93 Difference]: Finished difference Result 270 states and 313 transitions. [2022-11-18 18:40:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:40:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 62 [2022-11-18 18:40:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:47,725 INFO L225 Difference]: With dead ends: 270 [2022-11-18 18:40:47,725 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 18:40:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:40:47,726 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 21 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 231 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 18:40:47,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 231 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:40:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 18:40:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 155. [2022-11-18 18:40:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 120 states have (on average 1.125) internal successors, (135), 125 states have internal predecessors, (135), 18 states have call successors, (18), 11 states have call predecessors, (18), 16 states have return successors, (24), 18 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-18 18:40:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 177 transitions. [2022-11-18 18:40:47,744 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 177 transitions. Word has length 62 [2022-11-18 18:40:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:47,744 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 177 transitions. [2022-11-18 18:40:47,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 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 18:40:47,745 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 177 transitions. [2022-11-18 18:40:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 18:40:47,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:47,746 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-18 18:40:47,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:47,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:40:47,956 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash -357159951, now seen corresponding path program 1 times [2022-11-18 18:40:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250269754] [2022-11-18 18:40:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:50,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:40:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,070 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:40:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:51,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250269754] [2022-11-18 18:40:51,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250269754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:51,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061573336] [2022-11-18 18:40:51,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:51,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:40:51,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:40:51,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:40:51,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:40:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:51,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 18:40:51,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:51,686 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 21 treesize of output 26 [2022-11-18 18:40:52,248 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:40:52,248 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 26 treesize of output 10 [2022-11-18 18:40:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:40:52,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:52,859 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 814 treesize of output 798 [2022-11-18 18:40:53,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061573336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:53,399 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:40:53,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2022-11-18 18:40:53,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904188248] [2022-11-18 18:40:53,400 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:40:53,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:40:53,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:40:53,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 18:40:53,408 INFO L87 Difference]: Start difference. First operand 155 states and 177 transitions. Second operand has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:40:56,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:56,242 INFO L93 Difference]: Finished difference Result 190 states and 221 transitions. [2022-11-18 18:40:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:40:56,247 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) Word has length 64 [2022-11-18 18:40:56,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:56,251 INFO L225 Difference]: With dead ends: 190 [2022-11-18 18:40:56,251 INFO L226 Difference]: Without dead ends: 188 [2022-11-18 18:40:56,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2022-11-18 18:40:56,254 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 221 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:56,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 318 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1413 Invalid, 0 Unknown, 304 Unchecked, 1.4s Time] [2022-11-18 18:40:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-18 18:40:56,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 159. [2022-11-18 18:40:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 128 states have internal predecessors, (138), 18 states have call successors, (18), 12 states have call predecessors, (18), 17 states have return successors, (24), 18 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-18 18:40:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 180 transitions. [2022-11-18 18:40:56,276 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 180 transitions. Word has length 64 [2022-11-18 18:40:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:56,277 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 180 transitions. [2022-11-18 18:40:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.28) internal successors, (57), 21 states have internal predecessors, (57), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:40:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 180 transitions. [2022-11-18 18:40:56,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 18:40:56,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:56,279 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] [2022-11-18 18:40:56,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:40:56,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:40:56,490 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:56,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1477485396, now seen corresponding path program 1 times [2022-11-18 18:40:56,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937243066] [2022-11-18 18:40:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:56,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:40:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:40:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:40:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:40:57,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:40:57,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937243066] [2022-11-18 18:40:57,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937243066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:40:57,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:40:57,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:40:57,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396724811] [2022-11-18 18:40:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:40:57,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:40:57,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:40:57,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:40:57,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:40:57,433 INFO L87 Difference]: Start difference. First operand 159 states and 180 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 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 18:40:58,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:40:58,188 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2022-11-18 18:40:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:40:58,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 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 18:40:58,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:40:58,191 INFO L225 Difference]: With dead ends: 185 [2022-11-18 18:40:58,191 INFO L226 Difference]: Without dead ends: 183 [2022-11-18 18:40:58,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:40:58,192 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 107 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:40:58,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 296 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:40:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-18 18:40:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2022-11-18 18:40:58,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 132 states have (on average 1.1136363636363635) internal successors, (147), 138 states have internal predecessors, (147), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2022-11-18 18:40:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2022-11-18 18:40:58,211 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 64 [2022-11-18 18:40:58,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:40:58,212 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2022-11-18 18:40:58,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 8 states have internal predecessors, (42), 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 18:40:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2022-11-18 18:40:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 18:40:58,214 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:40:58,214 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] [2022-11-18 18:40:58,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 18:40:58,215 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:40:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:40:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash -2116417322, now seen corresponding path program 1 times [2022-11-18 18:40:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:40:58,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062013884] [2022-11-18 18:40:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:40:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:40:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:40:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:40:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:41:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:41:00,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:41:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:00,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062013884] [2022-11-18 18:41:00,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062013884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:00,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650963086] [2022-11-18 18:41:00,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:00,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:00,593 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:00,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:41:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 18:41:01,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:01,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:41:02,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:03,136 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 3036 treesize of output 2940 [2022-11-18 18:41:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:41:07,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650963086] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:07,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:07,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 34 [2022-11-18 18:41:07,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982422212] [2022-11-18 18:41:07,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:07,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 18:41:07,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:07,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 18:41:07,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1010, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:41:07,534 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:41:10,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:10,154 INFO L93 Difference]: Finished difference Result 244 states and 272 transitions. [2022-11-18 18:41:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 18:41:10,155 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 64 [2022-11-18 18:41:10,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:10,157 INFO L225 Difference]: With dead ends: 244 [2022-11-18 18:41:10,157 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 18:41:10,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 117 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=385, Invalid=2580, Unknown=5, NotChecked=0, Total=2970 [2022-11-18 18:41:10,159 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 445 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 498 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:10,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 623 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 653 Invalid, 0 Unknown, 498 Unchecked, 0.9s Time] [2022-11-18 18:41:10,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 18:41:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 167. [2022-11-18 18:41:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 136 states have internal predecessors, (146), 18 states have call successors, (18), 12 states have call predecessors, (18), 17 states have return successors, (25), 18 states have call predecessors, (25), 17 states have call successors, (25) [2022-11-18 18:41:10,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 189 transitions. [2022-11-18 18:41:10,180 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 189 transitions. Word has length 64 [2022-11-18 18:41:10,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:10,181 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 189 transitions. [2022-11-18 18:41:10,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 3.1) internal successors, (93), 27 states have internal predecessors, (93), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:41:10,181 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 189 transitions. [2022-11-18 18:41:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 18:41:10,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:10,183 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:10,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:10,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:10,395 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1604664163, now seen corresponding path program 1 times [2022-11-18 18:41:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:10,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534079375] [2022-11-18 18:41:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:12,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:41:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:41:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:41:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:41:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:41:13,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:13,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534079375] [2022-11-18 18:41:13,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534079375] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:13,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590424122] [2022-11-18 18:41:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:13,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:13,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:41:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:13,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 18:41:13,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:13,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:13,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:16,631 INFO L321 Elim1Store]: treesize reduction 13, result has 51.9 percent of original size [2022-11-18 18:41:16,631 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 3 case distinctions, treesize of input 48 treesize of output 34 [2022-11-18 18:41:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:41:16,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:17,630 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 730 treesize of output 706 [2022-11-18 18:41:18,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590424122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:18,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:41:18,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 35 [2022-11-18 18:41:18,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859504601] [2022-11-18 18:41:18,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:18,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 18:41:18,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:18,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 18:41:18,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:41:18,162 INFO L87 Difference]: Start difference. First operand 167 states and 189 transitions. Second operand has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 18:41:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:23,668 INFO L93 Difference]: Finished difference Result 228 states and 254 transitions. [2022-11-18 18:41:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:41:23,669 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 70 [2022-11-18 18:41:23,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:23,671 INFO L225 Difference]: With dead ends: 228 [2022-11-18 18:41:23,671 INFO L226 Difference]: Without dead ends: 226 [2022-11-18 18:41:23,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 94 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=437, Invalid=5406, Unknown=9, NotChecked=0, Total=5852 [2022-11-18 18:41:23,673 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 333 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 588 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:23,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 689 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1521 Invalid, 0 Unknown, 588 Unchecked, 2.0s Time] [2022-11-18 18:41:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-18 18:41:23,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 191. [2022-11-18 18:41:23,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 147 states have (on average 1.1020408163265305) internal successors, (162), 152 states have internal predecessors, (162), 23 states have call successors, (23), 15 states have call predecessors, (23), 20 states have return successors, (31), 23 states have call predecessors, (31), 22 states have call successors, (31) [2022-11-18 18:41:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 216 transitions. [2022-11-18 18:41:23,699 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 216 transitions. Word has length 70 [2022-11-18 18:41:23,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:23,699 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 216 transitions. [2022-11-18 18:41:23,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.566666666666667) internal successors, (77), 27 states have internal predecessors, (77), 10 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-18 18:41:23,700 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 216 transitions. [2022-11-18 18:41:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:41:23,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:23,702 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] [2022-11-18 18:41:23,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:23,913 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:23,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 809840792, now seen corresponding path program 1 times [2022-11-18 18:41:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:23,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172826462] [2022-11-18 18:41:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:26,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:28,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:28,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:28,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:41:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172826462] [2022-11-18 18:41:28,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172826462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:28,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298325346] [2022-11-18 18:41:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:28,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:28,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:28,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:28,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:41:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:28,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-18 18:41:28,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:28,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:28,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:28,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:29,867 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-18 18:41:29,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2022-11-18 18:41:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 18:41:29,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:41:29,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298325346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:29,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:41:29,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [21] total 29 [2022-11-18 18:41:29,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414288599] [2022-11-18 18:41:29,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:29,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:41:29,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:29,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:41:29,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2022-11-18 18:41:29,878 INFO L87 Difference]: Start difference. First operand 191 states and 216 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:41:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:30,270 INFO L93 Difference]: Finished difference Result 305 states and 343 transitions. [2022-11-18 18:41:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:41:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-18 18:41:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:30,272 INFO L225 Difference]: With dead ends: 305 [2022-11-18 18:41:30,272 INFO L226 Difference]: Without dead ends: 193 [2022-11-18 18:41:30,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 18:41:30,274 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 24 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 156 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:30,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 603 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 156 Unchecked, 0.1s Time] [2022-11-18 18:41:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-18 18:41:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 186. [2022-11-18 18:41:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 143 states have (on average 1.1048951048951048) internal successors, (158), 147 states have internal predecessors, (158), 23 states have call successors, (23), 15 states have call predecessors, (23), 19 states have return successors, (29), 23 states have call predecessors, (29), 22 states have call successors, (29) [2022-11-18 18:41:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 210 transitions. [2022-11-18 18:41:30,293 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 210 transitions. Word has length 68 [2022-11-18 18:41:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:30,293 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 210 transitions. [2022-11-18 18:41:30,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:41:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 210 transitions. [2022-11-18 18:41:30,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:41:30,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:30,295 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] [2022-11-18 18:41:30,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:30,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:30,505 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:30,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 415474006, now seen corresponding path program 1 times [2022-11-18 18:41:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:30,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684664593] [2022-11-18 18:41:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:41:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684664593] [2022-11-18 18:41:33,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684664593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129771645] [2022-11-18 18:41:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:33,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:33,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:33,120 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:33,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:41:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:33,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-18 18:41:33,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:33,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:33,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:41:35,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:35,687 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 792 treesize of output 768 [2022-11-18 18:41:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:41:36,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129771645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:36,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:36,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 13] total 35 [2022-11-18 18:41:36,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384737] [2022-11-18 18:41:36,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:36,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 18:41:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 18:41:36,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 18:41:36,384 INFO L87 Difference]: Start difference. First operand 186 states and 210 transitions. Second operand has 35 states, 31 states have (on average 3.096774193548387) internal successors, (96), 28 states have internal predecessors, (96), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:41:40,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:40,047 INFO L93 Difference]: Finished difference Result 299 states and 331 transitions. [2022-11-18 18:41:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:41:40,048 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 3.096774193548387) internal successors, (96), 28 states have internal predecessors, (96), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 68 [2022-11-18 18:41:40,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:40,049 INFO L225 Difference]: With dead ends: 299 [2022-11-18 18:41:40,050 INFO L226 Difference]: Without dead ends: 203 [2022-11-18 18:41:40,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=526, Invalid=3134, Unknown=0, NotChecked=0, Total=3660 [2022-11-18 18:41:40,052 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 256 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 937 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:40,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 365 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 908 Invalid, 0 Unknown, 937 Unchecked, 1.1s Time] [2022-11-18 18:41:40,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-18 18:41:40,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 172. [2022-11-18 18:41:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 130 states have (on average 1.0692307692307692) internal successors, (139), 133 states have internal predecessors, (139), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2022-11-18 18:41:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2022-11-18 18:41:40,074 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 68 [2022-11-18 18:41:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:40,075 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2022-11-18 18:41:40,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 3.096774193548387) internal successors, (96), 28 states have internal predecessors, (96), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-18 18:41:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2022-11-18 18:41:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:41:40,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:40,077 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] [2022-11-18 18:41:40,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:40,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:40,289 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash -864389672, now seen corresponding path program 1 times [2022-11-18 18:41:40,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:40,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721228677] [2022-11-18 18:41:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:42,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:42,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:41:43,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:43,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721228677] [2022-11-18 18:41:43,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721228677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:43,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308644474] [2022-11-18 18:41:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:43,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:43,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:43,491 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:43,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:41:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:44,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-18 18:41:44,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:44,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:44,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:41:45,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:41:46,346 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 343 treesize of output 331 [2022-11-18 18:41:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:41:47,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308644474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:41:47,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:41:47,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 13] total 40 [2022-11-18 18:41:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195195831] [2022-11-18 18:41:47,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:41:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 18:41:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:47,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 18:41:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 18:41:47,013 INFO L87 Difference]: Start difference. First operand 172 states and 189 transitions. Second operand has 40 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 32 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-18 18:41:48,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:48,936 INFO L93 Difference]: Finished difference Result 223 states and 243 transitions. [2022-11-18 18:41:48,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 18:41:48,937 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 32 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) Word has length 68 [2022-11-18 18:41:48,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:48,939 INFO L225 Difference]: With dead ends: 223 [2022-11-18 18:41:48,939 INFO L226 Difference]: Without dead ends: 185 [2022-11-18 18:41:48,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=322, Invalid=2870, Unknown=0, NotChecked=0, Total=3192 [2022-11-18 18:41:48,941 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 202 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 240 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:48,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 774 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 691 Invalid, 0 Unknown, 240 Unchecked, 0.9s Time] [2022-11-18 18:41:48,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-18 18:41:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-11-18 18:41:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 130 states have (on average 1.0615384615384615) internal successors, (138), 133 states have internal predecessors, (138), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2022-11-18 18:41:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 188 transitions. [2022-11-18 18:41:48,964 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 188 transitions. Word has length 68 [2022-11-18 18:41:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:48,965 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 188 transitions. [2022-11-18 18:41:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 32 states have internal predecessors, (124), 11 states have call successors, (16), 6 states have call predecessors, (16), 11 states have return successors, (15), 8 states have call predecessors, (15), 10 states have call successors, (15) [2022-11-18 18:41:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 188 transitions. [2022-11-18 18:41:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 18:41:48,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:48,967 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] [2022-11-18 18:41:48,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:41:49,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:41:49,180 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:49,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:49,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1584064284, now seen corresponding path program 1 times [2022-11-18 18:41:49,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397732278] [2022-11-18 18:41:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:49,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:52,153 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 18:41:52,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:52,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397732278] [2022-11-18 18:41:52,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397732278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:52,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:52,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 18:41:52,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549199369] [2022-11-18 18:41:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:52,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:41:52,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:52,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:41:52,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:41:52,156 INFO L87 Difference]: Start difference. First operand 172 states and 188 transitions. Second operand has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:41:53,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:53,074 INFO L93 Difference]: Finished difference Result 212 states and 231 transitions. [2022-11-18 18:41:53,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:41:53,075 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 68 [2022-11-18 18:41:53,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:53,077 INFO L225 Difference]: With dead ends: 212 [2022-11-18 18:41:53,077 INFO L226 Difference]: Without dead ends: 174 [2022-11-18 18:41:53,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:41:53,078 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 134 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:53,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 136 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:41:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-18 18:41:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2022-11-18 18:41:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.056) internal successors, (132), 128 states have internal predecessors, (132), 23 states have call successors, (23), 15 states have call predecessors, (23), 18 states have return successors, (27), 23 states have call predecessors, (27), 22 states have call successors, (27) [2022-11-18 18:41:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2022-11-18 18:41:53,102 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 68 [2022-11-18 18:41:53,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:53,102 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2022-11-18 18:41:53,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 18:41:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2022-11-18 18:41:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 18:41:53,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:53,104 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 18:41:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:41:53,105 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1328848801, now seen corresponding path program 1 times [2022-11-18 18:41:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:53,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885896505] [2022-11-18 18:41:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:53,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:41:53,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:53,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885896505] [2022-11-18 18:41:53,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885896505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:41:53,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:41:53,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:41:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681839883] [2022-11-18 18:41:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:41:53,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:41:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:41:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:41:53,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:41:53,422 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 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 18:41:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:41:53,708 INFO L93 Difference]: Finished difference Result 200 states and 218 transitions. [2022-11-18 18:41:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:41:53,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 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 70 [2022-11-18 18:41:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:41:53,711 INFO L225 Difference]: With dead ends: 200 [2022-11-18 18:41:53,711 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 18:41:53,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:41:53,712 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:41:53,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 120 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:41:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 18:41:53,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-18 18:41:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.0535714285714286) internal successors, (118), 114 states have internal predecessors, (118), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-18 18:41:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 167 transitions. [2022-11-18 18:41:53,739 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 167 transitions. Word has length 70 [2022-11-18 18:41:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:41:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 167 transitions. [2022-11-18 18:41:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 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 18:41:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 167 transitions. [2022-11-18 18:41:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 18:41:53,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:41:53,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:41:53,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 18:41:53,742 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:41:53,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:41:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2006675293, now seen corresponding path program 1 times [2022-11-18 18:41:53,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:41:53,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140157702] [2022-11-18 18:41:53,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:53,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:41:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:41:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:41:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:41:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:41:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:41:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:41:57,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 18:41:57,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:41:57,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140157702] [2022-11-18 18:41:57,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140157702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:41:57,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201064793] [2022-11-18 18:41:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:41:57,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:41:57,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:41:57,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:41:57,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:41:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:41:58,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 18:41:58,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:41:59,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:59,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:59,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:41:59,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:59,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:59,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:59,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-11-18 18:42:00,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:00,486 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 46 treesize of output 54 [2022-11-18 18:42:02,525 INFO L321 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2022-11-18 18:42:02,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 58 [2022-11-18 18:42:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:42:02,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:04,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:04,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 96 [2022-11-18 18:42:04,431 INFO L321 Elim1Store]: treesize reduction 3, result has 93.6 percent of original size [2022-11-18 18:42:04,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 99 treesize of output 114 [2022-11-18 18:42:04,464 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:42:04,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 110 [2022-11-18 18:42:05,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201064793] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:05,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:05,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 49 [2022-11-18 18:42:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298508579] [2022-11-18 18:42:05,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 18:42:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 18:42:05,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3732, Unknown=0, NotChecked=0, Total=3906 [2022-11-18 18:42:05,111 INFO L87 Difference]: Start difference. First operand 153 states and 167 transitions. Second operand has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-18 18:42:10,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:10,688 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2022-11-18 18:42:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 18:42:10,689 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) Word has length 70 [2022-11-18 18:42:10,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:10,690 INFO L225 Difference]: With dead ends: 179 [2022-11-18 18:42:10,691 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 18:42:10,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=518, Invalid=9988, Unknown=0, NotChecked=0, Total=10506 [2022-11-18 18:42:10,694 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 95 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 671 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:10,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1088 Invalid, 2202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1485 Invalid, 0 Unknown, 671 Unchecked, 1.4s Time] [2022-11-18 18:42:10,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 18:42:10,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 164. [2022-11-18 18:42:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 123 states have (on average 1.048780487804878) internal successors, (129), 125 states have internal predecessors, (129), 22 states have call successors, (22), 16 states have call predecessors, (22), 18 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-18 18:42:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2022-11-18 18:42:10,720 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 70 [2022-11-18 18:42:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:10,720 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2022-11-18 18:42:10,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 42 states have (on average 2.1666666666666665) internal successors, (91), 37 states have internal predecessors, (91), 10 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 9 states have call successors, (13) [2022-11-18 18:42:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2022-11-18 18:42:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 18:42:10,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:10,722 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-11-18 18:42:10,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:10,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 18:42:10,936 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:10,937 INFO L85 PathProgramCache]: Analyzing trace with hash -865864377, now seen corresponding path program 1 times [2022-11-18 18:42:10,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:10,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369452458] [2022-11-18 18:42:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:10,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:42:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:42:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:42:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:42:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 18:42:12,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:12,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369452458] [2022-11-18 18:42:12,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369452458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:12,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:12,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:42:12,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622684932] [2022-11-18 18:42:12,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:12,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:12,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:12,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:12,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:42:12,331 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:42:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:13,052 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2022-11-18 18:42:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2022-11-18 18:42:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:13,053 INFO L225 Difference]: With dead ends: 170 [2022-11-18 18:42:13,054 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 18:42:13,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:42:13,055 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 75 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:13,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 151 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:42:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 18:42:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-18 18:42:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 126 states have (on average 1.0476190476190477) internal successors, (132), 128 states have internal predecessors, (132), 22 states have call successors, (22), 17 states have call predecessors, (22), 19 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-18 18:42:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2022-11-18 18:42:13,076 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 76 [2022-11-18 18:42:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:13,077 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 178 transitions. [2022-11-18 18:42:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 7 states have internal predecessors, (33), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:42:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 178 transitions. [2022-11-18 18:42:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 18:42:13,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:13,079 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-18 18:42:13,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 18:42:13,079 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:13,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:13,080 INFO L85 PathProgramCache]: Analyzing trace with hash -446555988, now seen corresponding path program 1 times [2022-11-18 18:42:13,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:13,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985738530] [2022-11-18 18:42:13,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:42:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:42:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:42:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 18:42:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985738530] [2022-11-18 18:42:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985738530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:13,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:13,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:42:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993830166] [2022-11-18 18:42:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:42:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:42:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:42:13,377 INFO L87 Difference]: Start difference. First operand 168 states and 178 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:42:13,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:13,675 INFO L93 Difference]: Finished difference Result 276 states and 292 transitions. [2022-11-18 18:42:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:42:13,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2022-11-18 18:42:13,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:13,677 INFO L225 Difference]: With dead ends: 276 [2022-11-18 18:42:13,677 INFO L226 Difference]: Without dead ends: 164 [2022-11-18 18:42:13,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:42:13,679 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 87 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:13,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 120 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:42:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-18 18:42:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-18 18:42:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 122 states have (on average 1.0245901639344261) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 17 states have call predecessors, (22), 19 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-18 18:42:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 171 transitions. [2022-11-18 18:42:13,706 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 171 transitions. Word has length 76 [2022-11-18 18:42:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:13,706 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 171 transitions. [2022-11-18 18:42:13,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 18:42:13,707 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 171 transitions. [2022-11-18 18:42:13,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-18 18:42:13,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:13,708 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 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] [2022-11-18 18:42:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 18:42:13,709 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1177486125, now seen corresponding path program 1 times [2022-11-18 18:42:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:13,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472297296] [2022-11-18 18:42:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:42:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:42:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:42:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:42:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:42:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:15,204 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 18:42:15,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:15,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472297296] [2022-11-18 18:42:15,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472297296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:15,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:15,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:42:15,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212965357] [2022-11-18 18:42:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:15,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:42:15,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:42:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:42:15,208 INFO L87 Difference]: Start difference. First operand 164 states and 171 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 18:42:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:15,876 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2022-11-18 18:42:15,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:42:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 83 [2022-11-18 18:42:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:15,878 INFO L225 Difference]: With dead ends: 170 [2022-11-18 18:42:15,878 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 18:42:15,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:42:15,879 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:15,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 205 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:42:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 18:42:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-18 18:42:15,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.024) internal successors, (128), 127 states have internal predecessors, (128), 22 states have call successors, (22), 18 states have call predecessors, (22), 20 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-18 18:42:15,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2022-11-18 18:42:15,904 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 83 [2022-11-18 18:42:15,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:15,904 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2022-11-18 18:42:15,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 7 states have internal predecessors, (35), 3 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 18:42:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2022-11-18 18:42:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 18:42:15,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:15,906 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 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] [2022-11-18 18:42:15,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 18:42:15,907 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash 896566141, now seen corresponding path program 1 times [2022-11-18 18:42:15,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:15,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381315335] [2022-11-18 18:42:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:15,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:17,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:42:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:42:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:42:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 18:42:17,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:17,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381315335] [2022-11-18 18:42:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381315335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:17,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:17,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:42:17,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404207751] [2022-11-18 18:42:17,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:42:17,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:17,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:42:17,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:42:17,922 INFO L87 Difference]: Start difference. First operand 168 states and 174 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:42:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:18,647 INFO L93 Difference]: Finished difference Result 174 states and 179 transitions. [2022-11-18 18:42:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:42:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 82 [2022-11-18 18:42:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:18,649 INFO L225 Difference]: With dead ends: 174 [2022-11-18 18:42:18,649 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 18:42:18,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:42:18,650 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:18,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 132 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 18:42:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 18:42:18,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 144. [2022-11-18 18:42:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 17 states have call successors, (17), 15 states have call predecessors, (17), 16 states have return successors, (18), 17 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-18 18:42:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 147 transitions. [2022-11-18 18:42:18,674 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 147 transitions. Word has length 82 [2022-11-18 18:42:18,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:18,674 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 147 transitions. [2022-11-18 18:42:18,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 8 states have internal predecessors, (38), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:42:18,675 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 147 transitions. [2022-11-18 18:42:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 18:42:18,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:18,677 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 18:42:18,677 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:18,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:18,678 INFO L85 PathProgramCache]: Analyzing trace with hash -852279920, now seen corresponding path program 1 times [2022-11-18 18:42:18,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:18,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358169130] [2022-11-18 18:42:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:20,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:20,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:20,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:42:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 18:42:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 18:42:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:42:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:42:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 18:42:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 18:42:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 18:42:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 18:42:21,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358169130] [2022-11-18 18:42:21,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358169130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064251873] [2022-11-18 18:42:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:21,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:21,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:42:21,203 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:42:21,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:42:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:21,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2607 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 18:42:21,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:42:21,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:21,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:42:21,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-18 18:42:23,538 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 18:42:23,538 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 34 treesize of output 14 [2022-11-18 18:42:23,589 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-18 18:42:23,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:42:23,995 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 1500 treesize of output 1452 [2022-11-18 18:42:24,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064251873] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:42:24,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:42:24,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2022-11-18 18:42:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197405218] [2022-11-18 18:42:24,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:42:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:42:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:42:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2022-11-18 18:42:24,443 INFO L87 Difference]: Start difference. First operand 144 states and 147 transitions. Second operand has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-18 18:42:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:27,442 INFO L93 Difference]: Finished difference Result 204 states and 210 transitions. [2022-11-18 18:42:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 18:42:27,443 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 100 [2022-11-18 18:42:27,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:27,444 INFO L225 Difference]: With dead ends: 204 [2022-11-18 18:42:27,444 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 18:42:27,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 167 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 18:42:27,446 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 146 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 631 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 631 Invalid, 0 Unknown, 152 Unchecked, 0.7s Time] [2022-11-18 18:42:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 18:42:27,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-18 18:42:27,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 77 states have (on average 1.0) internal successors, (77), 77 states have internal predecessors, (77), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 18:42:27,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2022-11-18 18:42:27,485 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 100 [2022-11-18 18:42:27,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:27,485 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2022-11-18 18:42:27,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.772727272727273) internal successors, (83), 18 states have internal predecessors, (83), 10 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-18 18:42:27,486 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2022-11-18 18:42:27,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 18:42:27,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:42:27,487 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:42:27,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:42:27,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:42:27,700 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:42:27,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:42:27,700 INFO L85 PathProgramCache]: Analyzing trace with hash 534230128, now seen corresponding path program 1 times [2022-11-18 18:42:27,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:42:27,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54231078] [2022-11-18 18:42:27,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:42:27,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:42:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:42:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 18:42:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:42:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:42:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 18:42:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 18:42:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 18:42:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-18 18:42:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 18:42:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 18:42:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 18:42:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 18:42:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 18:42:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:42:31,683 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-18 18:42:31,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:42:31,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54231078] [2022-11-18 18:42:31,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54231078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:42:31,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:42:31,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 18:42:31,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780840525] [2022-11-18 18:42:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:42:31,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:42:31,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:42:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:42:31,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:42:31,687 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-18 18:42:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:42:33,134 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2022-11-18 18:42:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:42:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 112 [2022-11-18 18:42:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:42:33,135 INFO L225 Difference]: With dead ends: 105 [2022-11-18 18:42:33,135 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 18:42:33,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:42:33,136 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 78 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:42:33,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 175 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 828 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:42:33,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 18:42:33,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 18:42:33,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:42:33,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:42:33,138 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2022-11-18 18:42:33,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:42:33,138 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:42:33,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 12 states have internal predecessors, (46), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-18 18:42:33,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:42:33,139 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 18:42:33,142 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 18:42:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 18:42:33,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-18 18:42:36,780 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-18 18:42:36,780 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2022-11-18 18:42:36,780 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2022-11-18 18:42:36,780 INFO L899 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2022-11-18 18:42:36,780 INFO L895 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-18 18:42:36,781 INFO L902 garLoopResultBuilder]: At program point aws_byte_buf_is_validENTRY(lines 7375 7381) the Hoare annotation is: true [2022-11-18 18:42:36,781 INFO L899 garLoopResultBuilder]: For program point L7377-3(line 7377) no Hoare annotation was computed. [2022-11-18 18:42:36,781 INFO L899 garLoopResultBuilder]: For program point L7377-1(line 7377) no Hoare annotation was computed. [2022-11-18 18:42:36,781 INFO L899 garLoopResultBuilder]: For program point L7377(lines 7377 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,781 INFO L899 garLoopResultBuilder]: For program point L7377-7(lines 7377 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,782 INFO L899 garLoopResultBuilder]: For program point L7377-6(lines 7377 7378) no Hoare annotation was computed. [2022-11-18 18:42:36,782 INFO L899 garLoopResultBuilder]: For program point L7377-4(lines 7377 7378) no Hoare annotation was computed. [2022-11-18 18:42:36,782 INFO L899 garLoopResultBuilder]: For program point L7377-11(lines 7377 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,782 INFO L899 garLoopResultBuilder]: For program point L7377-9(lines 7377 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,782 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validFINAL(lines 7375 7381) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7375 7381) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point L7380-2(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point L7380(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point L7380-6(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point L7380-4(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,783 INFO L899 garLoopResultBuilder]: For program point L7380-3(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,784 INFO L899 garLoopResultBuilder]: For program point L7380-8(line 7380) no Hoare annotation was computed. [2022-11-18 18:42:36,784 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-18 18:42:36,784 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-18 18:42:36,784 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-18 18:42:36,784 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-18 18:42:36,785 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayFINAL(lines 8203 8216) no Hoare annotation was computed. [2022-11-18 18:42:36,785 INFO L899 garLoopResultBuilder]: For program point L8204-1(line 8204) no Hoare annotation was computed. [2022-11-18 18:42:36,785 INFO L895 garLoopResultBuilder]: At program point L8204(line 8204) the Hoare annotation is: (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) [2022-11-18 18:42:36,785 INFO L895 garLoopResultBuilder]: At program point L8214(line 8214) the Hoare annotation is: (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (let ((.cse4 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse9 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8))) (let ((.cse2 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse1 (select .cse4 .cse9))) (let ((.cse0 (= .cse1 0)) (.cse5 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse6 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse3 (select .cse2 |aws_byte_buf_from_array_~#buf~1.offset|))) (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (or .cse0 (= .cse1 |aws_byte_buf_from_array_#in~bytes.offset|)) (= (select .cse2 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16)) .cse3) (= (select .cse4 .cse5) 0) (or .cse0 (<= .cse3 (+ 18446744073709551615 (* 18446744073709551616 (div (+ (- 1) .cse3) 18446744073709551616))))) (= (select .cse6 .cse5) 0) (= |aws_byte_buf_from_array_~#buf~1.offset| 0) (not (= |aws_byte_buf_from_array_~#buf~1.base| 0)) (let ((.cse8 (< 0 (mod |aws_byte_buf_from_array_#in~len| 18446744073709551616))) (.cse7 (select .cse6 .cse9))) (or (and (= .cse7 0) (not .cse8)) (and .cse8 (= .cse7 |aws_byte_buf_from_array_#in~bytes.base|)))) (= |aws_byte_buf_from_array_#in~len| .cse3) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|)))))) [2022-11-18 18:42:36,786 INFO L895 garLoopResultBuilder]: At program point aws_byte_buf_from_arrayENTRY(lines 8203 8216) the Hoare annotation is: (or (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2022-11-18 18:42:36,786 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayEXIT(lines 8203 8216) no Hoare annotation was computed. [2022-11-18 18:42:36,786 INFO L899 garLoopResultBuilder]: For program point L8214-2(line 8214) no Hoare annotation was computed. [2022-11-18 18:42:36,787 INFO L895 garLoopResultBuilder]: At program point L8214-1(line 8214) the Hoare annotation is: (let ((.cse15 (select |#memory_int| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse14 (select |#memory_$Pointer$.offset| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse16 (+ |aws_byte_buf_from_array_~#buf~1.offset| 8))) (let ((.cse13 (+ |aws_byte_buf_from_array_~#buf~1.offset| 24)) (.cse1 (select .cse14 .cse16)) (.cse4 (select .cse15 |aws_byte_buf_from_array_~#buf~1.offset|)) (.cse12 (select |#memory_$Pointer$.base| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse7 (select .cse12 .cse16)) (.cse2 (= (select .cse15 (+ |aws_byte_buf_from_array_~#buf~1.offset| 16)) .cse4)) (.cse0 (= .cse1 0)) (.cse3 (= (select .cse14 .cse13) 0)) (.cse5 (= (select .cse12 .cse13) 0)) (.cse6 (= |aws_byte_buf_from_array_~#buf~1.offset| 0)) (.cse8 (not (= |aws_byte_buf_from_array_~#buf~1.base| 0))) (.cse9 (= |aws_byte_buf_from_array_#in~len| .cse4)) (.cse10 (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|)) (.cse11 (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) (or (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (or .cse0 (= .cse1 |aws_byte_buf_from_array_#in~bytes.offset|)) .cse2 .cse3 (not (= (mod .cse4 18446744073709551616) 0)) (<= |aws_byte_buf_from_array_#t~ret1045| 1) .cse5 (<= 1 |aws_byte_buf_from_array_#t~ret1045|) .cse6 (= .cse7 |aws_byte_buf_from_array_#in~bytes.base|) .cse8 .cse9 .cse10 .cse11) (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= .cse7 0) (= |aws_byte_buf_from_array_#t~ret1045| 1) .cse2 .cse0 .cse3 .cse5 (<= 0 (+ |aws_byte_buf_from_array_#in~len| (* (div (- |aws_byte_buf_from_array_#in~len|) 18446744073709551616) 18446744073709551616))) .cse6 .cse8 .cse9 .cse10 .cse11))))) [2022-11-18 18:42:36,787 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-11-18 18:42:36,787 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-11-18 18:42:36,787 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-11-18 18:42:36,787 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-18 18:42:36,788 INFO L899 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2022-11-18 18:42:36,788 INFO L899 garLoopResultBuilder]: For program point L8962-1(line 8962) no Hoare annotation was computed. [2022-11-18 18:42:36,788 INFO L899 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2022-11-18 18:42:36,788 INFO L895 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: (let ((.cse7 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse3 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse9 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse3 .cse9)) (.cse1 (= (select .cse7 .cse9) 0))) (let ((.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse1)) (.cse6 (select .cse8 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse5 (select .cse8 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (or .cse0 (and .cse1 (= .cse2 0))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse3 .cse4) 0) (<= .cse5 .cse6) (= (select .cse7 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or .cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.base| 0))) (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0) (<= .cse6 (+ (* (div .cse5 18446744073709551616) 18446744073709551616) 18446744073709551615)))))) [2022-11-18 18:42:36,789 INFO L895 garLoopResultBuilder]: At program point L8971(lines 8971 8973) the Hoare annotation is: (let ((.cse18 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse14 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse13 (select .cse18 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse12 (select .cse18 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse16 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse17 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1203#1.base| 0)) (.cse1 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse2 (= (select .cse16 .cse17) 0)) (.cse3 (<= .cse13 .cse12)) (.cse4 (= (select .cse14 .cse17) 0)) (.cse5 (= .cse12 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse6 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse10 (select .cse16 .cse15)) (.cse7 (= (select .cse14 .cse15) 0)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1203#1.offset| 0)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse11 (<= .cse12 (+ (* (div .cse13 18446744073709551616) 18446744073709551616) 18446744073709551615)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (= .cse10 0) .cse11) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse5 .cse6 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse10) .cse7 .cse8 .cse9 .cse11))))) [2022-11-18 18:42:36,789 INFO L899 garLoopResultBuilder]: For program point L8971-1(lines 8971 8973) no Hoare annotation was computed. [2022-11-18 18:42:36,789 INFO L895 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| (+ 36028797018963967 (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616)))) [2022-11-18 18:42:36,790 INFO L899 garLoopResultBuilder]: For program point L8965-1(line 8965) no Hoare annotation was computed. [2022-11-18 18:42:36,790 INFO L895 garLoopResultBuilder]: At program point L8969(line 8969) the Hoare annotation is: (let ((.cse17 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse14 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse15 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse12 (select .cse17 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse11 (select .cse17 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse13 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse13 .cse16) 0)) (.cse2 (<= .cse12 .cse11)) (.cse3 (= (select .cse15 .cse16) 0)) (.cse4 (= .cse11 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse5 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1201#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (= (select .cse15 .cse14) 0)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse6 (select .cse13 .cse14)) (.cse10 (<= .cse11 (+ (* (div .cse12 18446744073709551616) 18446744073709551616) 18446744073709551615)))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse4 .cse5 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse6) .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (= .cse6 0) .cse10))))) [2022-11-18 18:42:36,790 INFO L899 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2022-11-18 18:42:36,790 INFO L899 garLoopResultBuilder]: For program point L8969-1(line 8969) no Hoare annotation was computed. [2022-11-18 18:42:36,791 INFO L895 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: (let ((.cse7 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse3 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse9 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse3 .cse9)) (.cse1 (= (select .cse7 .cse9) 0))) (let ((.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse1)) (.cse6 (select .cse8 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse5 (select .cse8 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (or .cse0 (and .cse1 (= .cse2 0))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse3 .cse4) 0) (<= .cse5 .cse6) (= (select .cse7 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or .cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.base| 0))) (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0) (<= .cse6 (+ (* (div .cse5 18446744073709551616) 18446744073709551616) 18446744073709551615)))))) [2022-11-18 18:42:36,791 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-18 18:42:36,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-18 18:42:36,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-18 18:42:36,792 INFO L899 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2022-11-18 18:42:36,792 INFO L899 garLoopResultBuilder]: For program point L8959(lines 8959 8977) no Hoare annotation was computed. [2022-11-18 18:42:36,792 INFO L902 garLoopResultBuilder]: At program point L8978(line 8978) the Hoare annotation is: true [2022-11-18 18:42:36,792 INFO L899 garLoopResultBuilder]: For program point L8974-2(lines 8974 8976) no Hoare annotation was computed. [2022-11-18 18:42:36,792 INFO L895 garLoopResultBuilder]: At program point L8970(line 8970) the Hoare annotation is: (let ((.cse17 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse14 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse13 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse12 (select .cse17 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse11 (select .cse17 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse15 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse15 .cse16) 0)) (.cse2 (<= .cse12 .cse11)) (.cse3 (= (select .cse13 .cse16) 0)) (.cse4 (= .cse11 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse5 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse9 (select .cse15 .cse14)) (.cse6 (= (select .cse13 .cse14) 0)) (.cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1202#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse8 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse10 (<= .cse11 (+ (* (div .cse12 18446744073709551616) 18446744073709551616) 18446744073709551615)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= .cse9 0) .cse10) (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse4 .cse5 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse9) .cse6 .cse7 .cse8 .cse10))))) [2022-11-18 18:42:36,793 INFO L899 garLoopResultBuilder]: For program point L8974(lines 8974 8976) no Hoare annotation was computed. [2022-11-18 18:42:36,793 INFO L895 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: (let ((.cse7 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse3 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse9 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse3 .cse9)) (.cse1 (= (select .cse7 .cse9) 0))) (let ((.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse1)) (.cse6 (select .cse8 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse5 (select .cse8 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (or .cse0 (and .cse1 (= .cse2 0))) (= |ULTIMATE.start_assert_bytes_match_#t~mem585#1| |ULTIMATE.start_assert_bytes_match_#t~mem584#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse3 .cse4) 0) (<= .cse5 .cse6) (= (select .cse7 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or .cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.base| 0))) (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0) (<= .cse6 (+ (* (div .cse5 18446744073709551616) 18446744073709551616) 18446744073709551615)))))) [2022-11-18 18:42:36,793 INFO L902 garLoopResultBuilder]: At program point L8962(line 8962) the Hoare annotation is: true [2022-11-18 18:42:36,794 INFO L899 garLoopResultBuilder]: For program point L8970-1(line 8970) no Hoare annotation was computed. [2022-11-18 18:42:36,794 INFO L895 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: (let ((.cse7 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse3 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse9 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8))) (let ((.cse8 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse2 (select .cse3 .cse9)) (.cse1 (= (select .cse7 .cse9) 0))) (let ((.cse4 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24)) (.cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse2) .cse1)) (.cse6 (select .cse8 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse5 (select .cse8 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (and (or .cse0 (and .cse1 (= .cse2 0))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| 0) (= (select .cse3 .cse4) 0) (<= .cse5 .cse6) (= (select .cse7 .cse4) 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (or .cse0 (and (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.offset| 0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1204#1.base| 0))) (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|) (= |ULTIMATE.start_assert_bytes_match_~a#1.offset| 0) (<= .cse6 (+ (* (div .cse5 18446744073709551616) 18446744073709551616) 18446744073709551615)))))) [2022-11-18 18:42:36,795 INFO L895 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: (let ((.cse19 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse16 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse10 (select .cse19 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|))) (.cse17 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse18 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (= (select .cse15 .cse18) 0)) (.cse5 (select .cse19 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (.cse1 (= (select .cse17 .cse18) 0)) (.cse2 (= .cse10 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse3 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse4 (= (select .cse17 .cse16) 0)) (.cse6 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse7 (select .cse15 .cse16))) (or (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) .cse0 .cse1 .cse2 .cse3 .cse4 (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse6 (= .cse7 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_40| Int)) (let ((.cse8 (select (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_40|) 0))) (and (<= .cse8 (* 18446744073709551616 (div .cse8 18446744073709551616))) (= .cse5 .cse8))))) (and .cse0 (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_31| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_33| Int)) (let ((.cse9 (select (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_33|) |v_aws_byte_buf_from_array_~#buf~1.offset_31|))) (and (= .cse9 .cse5) (= .cse9 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)))) .cse1 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_65| Int)) (let ((.cse13 (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_65|))) (let ((.cse12 (select .cse13 0)) (.cse11 (select .cse13 16))) (and (= .cse10 .cse11) (not (= (mod .cse12 18446744073709551616) 0)) (= .cse12 .cse11))))) .cse2 .cse3 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse7) .cse4 .cse6 (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| (+ 36028797018963967 (* (div |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1| 18446744073709551616) 18446744073709551616))) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_77| Int)) (let ((.cse14 (select (select |#memory_$Pointer$.base| |v_aws_byte_buf_from_array_~#buf~1.base_77|) 8))) (and (not (= .cse14 0)) (= .cse14 .cse7))))))))) [2022-11-18 18:42:36,796 INFO L895 garLoopResultBuilder]: At program point L8968-1(line 8968) the Hoare annotation is: (let ((.cse12 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 8)) (.cse13 (select |#memory_$Pointer$.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse14 (select |#memory_int| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse11 (select |#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse15 (+ |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 24))) (let ((.cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0))) (.cse1 (= (select .cse11 .cse15) 0)) (.cse2 (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_31| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_33| Int)) (let ((.cse16 (select (select |#memory_int| |v_aws_byte_buf_from_array_~#buf~1.base_33|) |v_aws_byte_buf_from_array_~#buf~1.offset_31|))) (and (= .cse16 (select .cse14 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) (= .cse16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))) (.cse3 (<= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1200#1| 1)) (.cse4 (= (select .cse13 .cse15) 0)) (.cse5 (<= 1 |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1200#1|)) (.cse6 (= (select .cse14 (+ 16 |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset|)) |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse7 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse9 (= (select .cse13 .cse12) 0)) (.cse10 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse8 (select .cse11 .cse12))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse5 .cse6 .cse7 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse8) .cse9 .cse10) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse9 .cse10 (= .cse8 0))))) [2022-11-18 18:42:36,796 INFO L899 garLoopResultBuilder]: For program point L8968-2(line 8968) no Hoare annotation was computed. [2022-11-18 18:42:36,796 INFO L899 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2022-11-18 18:42:36,796 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-18 18:42:36,797 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-18 18:42:36,797 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-18 18:42:36,797 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-18 18:42:36,797 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-18 18:42:36,797 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-18 18:42:36,802 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 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 18:42:36,805 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:42:36,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:42:36 BoogieIcfgContainer [2022-11-18 18:42:36,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:42:36,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:42:36,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:42:36,817 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:42:36,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:39:34" (3/4) ... [2022-11-18 18:42:36,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:42:36,830 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-18 18:42:36,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_from_array [2022-11-18 18:42:36,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-11-18 18:42:36,831 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2022-11-18 18:42:36,832 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-18 18:42:36,832 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-18 18:42:36,845 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 120 nodes and edges [2022-11-18 18:42:36,847 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2022-11-18 18:42:36,848 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-18 18:42:36,849 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-18 18:42:36,850 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-18 18:42:36,852 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-18 18:42:36,853 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:42:36,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:42:37,636 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:42:37,638 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:42:37,639 INFO L158 Benchmark]: Toolchain (without parser) took 189512.16ms. Allocated memory was 123.7MB in the beginning and 1.1GB in the end (delta: 977.3MB). Free memory was 76.0MB in the beginning and 776.6MB in the end (delta: -700.7MB). Peak memory consumption was 274.0MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,640 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:42:37,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3710.25ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 75.7MB in the beginning and 92.1MB in the end (delta: -16.4MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 283.66ms. Allocated memory is still 174.1MB. Free memory was 92.1MB in the beginning and 81.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,641 INFO L158 Benchmark]: Boogie Preprocessor took 148.53ms. Allocated memory is still 174.1MB. Free memory was 81.7MB in the beginning and 74.3MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,641 INFO L158 Benchmark]: RCFGBuilder took 2329.94ms. Allocated memory was 174.1MB in the beginning and 293.6MB in the end (delta: 119.5MB). Free memory was 74.3MB in the beginning and 158.4MB in the end (delta: -84.1MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,641 INFO L158 Benchmark]: TraceAbstraction took 182208.22ms. Allocated memory was 293.6MB in the beginning and 1.1GB in the end (delta: 807.4MB). Free memory was 157.3MB in the beginning and 906.7MB in the end (delta: -749.4MB). Peak memory consumption was 587.6MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,642 INFO L158 Benchmark]: Witness Printer took 822.19ms. Allocated memory is still 1.1GB. Free memory was 906.7MB in the beginning and 776.6MB in the end (delta: 130.0MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. [2022-11-18 18:42:37,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 123.7MB. Free memory is still 101.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3710.25ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 75.7MB in the beginning and 92.1MB in the end (delta: -16.4MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 283.66ms. Allocated memory is still 174.1MB. Free memory was 92.1MB in the beginning and 81.7MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.53ms. Allocated memory is still 174.1MB. Free memory was 81.7MB in the beginning and 74.3MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2329.94ms. Allocated memory was 174.1MB in the beginning and 293.6MB in the end (delta: 119.5MB). Free memory was 74.3MB in the beginning and 158.4MB in the end (delta: -84.1MB). Peak memory consumption was 45.8MB. Max. memory is 16.1GB. * TraceAbstraction took 182208.22ms. Allocated memory was 293.6MB in the beginning and 1.1GB in the end (delta: 807.4MB). Free memory was 157.3MB in the beginning and 906.7MB in the end (delta: -749.4MB). Peak memory consumption was 587.6MB. Max. memory is 16.1GB. * Witness Printer took 822.19ms. Allocated memory is still 1.1GB. Free memory was 906.7MB in the beginning and 776.6MB in the end (delta: 130.0MB). Peak memory consumption was 127.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 182.1s, OverallIterations: 32, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 52.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4922 SdHoareTripleChecker+Valid, 24.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4791 mSDsluCounter, 10833 SdHoareTripleChecker+Invalid, 20.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5319 IncrementalHoareTripleChecker+Unchecked, 9381 mSDsCounter, 1136 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19036 IncrementalHoareTripleChecker+Invalid, 25491 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1136 mSolverCounterUnsat, 1452 mSDtfsCounter, 19036 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2568 GetRequests, 1580 SyntacticMatches, 61 SemanticMatches, 927 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9710 ImplicationChecksByTransitivity, 53.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=20, InterpolantAutomatonStates: 569, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 32 MinimizatonAttempts, 464 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 233 PreInvPairs, 256 NumberOfFragments, 2003 HoareAnnotationTreeSize, 233 FomulaSimplifications, 308 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 22 FomulaSimplificationsInter, 29487 FormulaSimplificationTreeSizeReductionInter, 3.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 12.7s SatisfiabilityAnalysisTime, 104.5s InterpolantComputationTime, 2812 NumberOfCodeBlocks, 2812 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 3086 ConstructedInterpolants, 322 QuantifiedInterpolants, 26680 SizeOfPredicates, 182 NumberOfNonLiveVariables, 32627 ConjunctsInSsa, 585 ConjunctsInUnsatCore, 50 InterpolantComputations, 22 PerfectInterpolantSequences, 858/1155 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 8978]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-18 18:42:37,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f6f1a0d4-7407-460c-a86d-2c0f0accf742/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE