./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_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_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/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_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/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_a54e6686-3b8b-49e1-8468-4b439f3a0890/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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:59:35,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:59:35,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:59:35,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:59:35,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:59:35,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:59:35,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:59:35,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:59:35,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:59:35,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:59:35,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:59:35,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:59:35,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:59:35,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:59:35,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:59:35,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:59:35,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:59:35,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:59:35,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:59:35,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:59:35,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:59:35,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:59:35,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:59:35,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:59:35,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:59:35,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:59:35,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:59:35,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:59:35,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:59:35,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:59:35,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:59:35,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:59:35,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:59:35,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:59:35,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:59:35,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:59:35,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:59:35,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:59:35,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:59:35,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:59:35,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:59:35,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:59:35,944 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:59:35,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:59:35,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:59:35,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:59:35,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:59:35,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:59:35,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:59:35,948 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:59:35,948 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:59:35,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:59:35,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:59:35,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:59:35,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:59:35,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:59:35,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:59:35,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:59:35,950 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:59:35,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:59:35,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:59:35,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:59:35,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:59:35,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:35,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:59:35,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:59:35,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:59:35,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:59:35,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:59:35,953 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:59:35,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:59:35,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:59:35,954 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_a54e6686-3b8b-49e1-8468-4b439f3a0890/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2022-11-18 20:59:36,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:59:36,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:59:36,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:59:36,263 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:59:36,264 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:59:36,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-11-18 20:59:36,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/data/dc44f3f5f/95020e5af8e54d96a63e82adbc795d68/FLAG6bdb2e59e [2022-11-18 20:59:37,500 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:59:37,504 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-11-18 20:59:37,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/data/dc44f3f5f/95020e5af8e54d96a63e82adbc795d68/FLAG6bdb2e59e [2022-11-18 20:59:37,835 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/data/dc44f3f5f/95020e5af8e54d96a63e82adbc795d68 [2022-11-18 20:59:37,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:59:37,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:59:37,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:37,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:59:37,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:59:37,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:37" (1/1) ... [2022-11-18 20:59:37,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795a86dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:37, skipping insertion in model container [2022-11-18 20:59:37,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:59:37" (1/1) ... [2022-11-18 20:59:37,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:59:38,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:59:38,359 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_a54e6686-3b8b-49e1-8468-4b439f3a0890/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2022-11-18 20:59:38,369 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_a54e6686-3b8b-49e1-8468-4b439f3a0890/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2022-11-18 20:59:39,539 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,550 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,551 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,552 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,553 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,586 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,588 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,591 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:39,592 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,095 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:59:40,096 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:59:40,098 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:59:40,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:59:40,101 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:59:40,102 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:59:40,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:59:40,104 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:59:40,105 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:59:40,106 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:59:40,316 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:59:40,366 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,366 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,461 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,467 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:40,737 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:59:40,766 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4505,4518] [2022-11-18 20:59:40,774 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i[4565,4578] [2022-11-18 20:59:40,846 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,847 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,848 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,849 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,851 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,874 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,880 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,882 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,883 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:40,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-18 20:59:40,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-18 20:59:40,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-18 20:59:40,948 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-18 20:59:40,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-18 20:59:40,950 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-18 20:59:40,951 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-18 20:59:40,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-18 20:59:40,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-18 20:59:40,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-18 20:59:41,005 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-18 20:59:41,032 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:41,033 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:41,124 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:41,125 WARN L1568 CHandler]: Possible shadowing of function index [2022-11-18 20:59:41,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:59:41,530 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:59:41,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41 WrapperNode [2022-11-18 20:59:41,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:59:41,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:41,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:59:41,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:59:41,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,800 INFO L138 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 958 [2022-11-18 20:59:41,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:59:41,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:59:41,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:59:41,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:59:41,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:59:41,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:59:41,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:59:41,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:59:41,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (1/1) ... [2022-11-18 20:59:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:59:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:41,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:59:41,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:59:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-18 20:59:42,043 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-18 20:59:42,043 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-18 20:59:42,044 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-18 20:59:42,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:59:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-18 20:59:42,045 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-18 20:59:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:59:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-18 20:59:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-18 20:59:42,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 20:59:42,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 20:59:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:59:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:59:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:59:42,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:59:42,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:59:42,050 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-18 20:59:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-18 20:59:42,051 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:59:42,051 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:59:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:59:42,052 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-18 20:59:42,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-18 20:59:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:59:42,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:59:42,054 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-18 20:59:42,054 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-18 20:59:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-18 20:59:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-18 20:59:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-11-18 20:59:42,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-11-18 20:59:42,055 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-18 20:59:42,056 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-18 20:59:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:59:42,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:59:42,535 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:59:42,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:59:44,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:59:44,436 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:59:44,437 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:59:44,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:44 BoogieIcfgContainer [2022-11-18 20:59:44,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:59:44,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:59:44,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:59:44,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:59:44,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:59:37" (1/3) ... [2022-11-18 20:59:44,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2271c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:44, skipping insertion in model container [2022-11-18 20:59:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:59:41" (2/3) ... [2022-11-18 20:59:44,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2271c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:59:44, skipping insertion in model container [2022-11-18 20:59:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:59:44" (3/3) ... [2022-11-18 20:59:44,455 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2022-11-18 20:59:44,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:59:44,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:59:44,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:59:44,603 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;@2f9dd69a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:59:44,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:59:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-18 20:59:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:59:44,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:44,636 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:44,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:44,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:44,646 INFO L85 PathProgramCache]: Analyzing trace with hash -515135338, now seen corresponding path program 1 times [2022-11-18 20:59:44,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:44,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989127746] [2022-11-18 20:59:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:44,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:59:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:59:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:59:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:59:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:59:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:59:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:59:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:59:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:59:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-11-18 20:59:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:45,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989127746] [2022-11-18 20:59:45,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989127746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:45,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:45,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:59:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459116852] [2022-11-18 20:59:45,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:45,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:59:45,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:45,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:59:45,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:45,923 INFO L87 Difference]: Start difference. First operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:59:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:46,541 INFO L93 Difference]: Finished difference Result 324 states and 457 transitions. [2022-11-18 20:59:46,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:59:46,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2022-11-18 20:59:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:46,575 INFO L225 Difference]: With dead ends: 324 [2022-11-18 20:59:46,576 INFO L226 Difference]: Without dead ends: 159 [2022-11-18 20:59:46,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:59:46,599 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 70 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:46,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 197 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:59:46,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-18 20:59:46,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-11-18 20:59:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-18 20:59:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2022-11-18 20:59:46,666 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 106 [2022-11-18 20:59:46,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:46,666 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2022-11-18 20:59:46,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:59:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2022-11-18 20:59:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 20:59:46,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:46,671 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:46,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:59:46,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:46,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:46,672 INFO L85 PathProgramCache]: Analyzing trace with hash 828607714, now seen corresponding path program 1 times [2022-11-18 20:59:46,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119528002] [2022-11-18 20:59:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:59:47,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:59:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:59:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:59:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:59:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:59:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:59:47,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:59:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:59:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 20:59:47,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:47,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119528002] [2022-11-18 20:59:47,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119528002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:47,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930692225] [2022-11-18 20:59:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:47,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:47,915 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:47,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:59:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:59:48,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-18 20:59:48,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:48,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930692225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:48,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:48,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-18 20:59:48,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649941913] [2022-11-18 20:59:48,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:48,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:48,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:59:48,976 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:59:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:49,387 INFO L93 Difference]: Finished difference Result 304 states and 405 transitions. [2022-11-18 20:59:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:59:49,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2022-11-18 20:59:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:49,404 INFO L225 Difference]: With dead ends: 304 [2022-11-18 20:59:49,404 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:59:49,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:59:49,409 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 235 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:49,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 435 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:59:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:59:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-18 20:59:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-11-18 20:59:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2022-11-18 20:59:49,458 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 106 [2022-11-18 20:59:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:49,459 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2022-11-18 20:59:49,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-18 20:59:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2022-11-18 20:59:49,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 20:59:49,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:49,468 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:49,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:49,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:49,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:49,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:49,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2123314487, now seen corresponding path program 1 times [2022-11-18 20:59:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:49,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16200599] [2022-11-18 20:59:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:59:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:59:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:59:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:59:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:59:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:59:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:59:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:59:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:59:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 20:59:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16200599] [2022-11-18 20:59:50,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16200599] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009441693] [2022-11-18 20:59:50,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:50,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:50,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:50,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:59:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:51,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:59:51,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:51,758 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 15 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:59:51,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:59:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 20:59:52,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009441693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:59:52,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:59:52,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-18 20:59:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188104339] [2022-11-18 20:59:52,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:59:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:59:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:59:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:59:52,038 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2022-11-18 20:59:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:53,033 INFO L93 Difference]: Finished difference Result 290 states and 390 transitions. [2022-11-18 20:59:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:53,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 112 [2022-11-18 20:59:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:53,036 INFO L225 Difference]: With dead ends: 290 [2022-11-18 20:59:53,037 INFO L226 Difference]: Without dead ends: 165 [2022-11-18 20:59:53,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:59:53,038 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 351 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:53,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 488 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:59:53,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-11-18 20:59:53,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-11-18 20:59:53,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 109 states have internal predecessors, (127), 44 states have call successors, (44), 12 states have call predecessors, (44), 14 states have return successors, (49), 43 states have call predecessors, (49), 43 states have call successors, (49) [2022-11-18 20:59:53,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 220 transitions. [2022-11-18 20:59:53,079 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 220 transitions. Word has length 112 [2022-11-18 20:59:53,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:53,080 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 220 transitions. [2022-11-18 20:59:53,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 11 states have internal predecessors, (111), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2022-11-18 20:59:53,080 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 220 transitions. [2022-11-18 20:59:53,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-18 20:59:53,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:53,082 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:53,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:53,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:53,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:53,299 INFO L85 PathProgramCache]: Analyzing trace with hash 512305682, now seen corresponding path program 1 times [2022-11-18 20:59:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:53,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977521385] [2022-11-18 20:59:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:53,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:59:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:59:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:59:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:59:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:59:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:59:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:59:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:59:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-18 20:59:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:54,388 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 20:59:54,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:54,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977521385] [2022-11-18 20:59:54,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977521385] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:59:54,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900769984] [2022-11-18 20:59:54,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:54,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:54,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:59:54,391 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:59:54,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:59:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:55,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:59:55,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:59:55,300 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:59:55,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:59:55,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900769984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:55,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:59:55,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-18 20:59:55,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867211475] [2022-11-18 20:59:55,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:55,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:59:55,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:55,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:59:55,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:59:55,304 INFO L87 Difference]: Start difference. First operand 165 states and 220 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:59:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:55,686 INFO L93 Difference]: Finished difference Result 290 states and 387 transitions. [2022-11-18 20:59:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 114 [2022-11-18 20:59:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:55,690 INFO L225 Difference]: With dead ends: 290 [2022-11-18 20:59:55,690 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 20:59:55,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:59:55,692 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 258 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:55,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 555 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:59:55,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 20:59:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-11-18 20:59:55,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-11-18 20:59:55,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-11-18 20:59:55,711 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 114 [2022-11-18 20:59:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:55,712 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-11-18 20:59:55,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:59:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-11-18 20:59:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 20:59:55,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:55,715 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:55,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:59:55,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:59:55,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:55,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1736862222, now seen corresponding path program 1 times [2022-11-18 20:59:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:55,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685203002] [2022-11-18 20:59:55,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:59:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:59:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:59:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:59:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:59:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:59:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 20:59:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:59:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 20:59:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 20:59:56,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:56,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685203002] [2022-11-18 20:59:56,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685203002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:56,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:56,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:59:56,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521770189] [2022-11-18 20:59:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:56,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:59:56,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:59:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:59:56,835 INFO L87 Difference]: Start difference. First operand 162 states and 214 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:59:57,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:57,682 INFO L93 Difference]: Finished difference Result 281 states and 370 transitions. [2022-11-18 20:59:57,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:57,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 126 [2022-11-18 20:59:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:57,686 INFO L225 Difference]: With dead ends: 281 [2022-11-18 20:59:57,687 INFO L226 Difference]: Without dead ends: 159 [2022-11-18 20:59:57,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:59:57,689 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 146 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:57,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 465 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:59:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-18 20:59:57,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-11-18 20:59:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 103 states have internal predecessors, (121), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-18 20:59:57,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2022-11-18 20:59:57,713 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 126 [2022-11-18 20:59:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:57,714 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2022-11-18 20:59:57,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 20:59:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2022-11-18 20:59:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 20:59:57,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:57,717 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:57,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:59:57,718 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2638131, now seen corresponding path program 1 times [2022-11-18 20:59:57,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:57,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708625274] [2022-11-18 20:59:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:57,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:59:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:59:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:59:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:59:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:59:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:59:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:59:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:59:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:59:59,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 20:59:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:59:59,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 20:59:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:59:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:59:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-18 20:59:59,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:59,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708625274] [2022-11-18 20:59:59,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708625274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:59,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:59,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:59:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675651484] [2022-11-18 20:59:59,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:59:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:59:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:59,317 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 21:00:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:00,274 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2022-11-18 21:00:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:00:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2022-11-18 21:00:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:00,277 INFO L225 Difference]: With dead ends: 171 [2022-11-18 21:00:00,277 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 21:00:00,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:00:00,278 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 94 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:00,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 777 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:00:00,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 21:00:00,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-11-18 21:00:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 110 states have internal predecessors, (127), 45 states have call successors, (45), 13 states have call predecessors, (45), 14 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2022-11-18 21:00:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 221 transitions. [2022-11-18 21:00:00,311 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 221 transitions. Word has length 128 [2022-11-18 21:00:00,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:00,314 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 221 transitions. [2022-11-18 21:00:00,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 21:00:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 221 transitions. [2022-11-18 21:00:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-18 21:00:00,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:00,317 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:00:00,318 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash -822618705, now seen corresponding path program 1 times [2022-11-18 21:00:00,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:00,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415399648] [2022-11-18 21:00:00,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:00,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:00:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:00:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:00:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:00:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:00:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:00:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:00:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:00:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:00:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:00:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:00:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:00:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 21:00:01,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415399648] [2022-11-18 21:00:01,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415399648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:01,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:01,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:00:01,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800942624] [2022-11-18 21:00:01,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:01,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:00:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:01,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:00:01,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:00:01,204 INFO L87 Difference]: Start difference. First operand 168 states and 221 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 21:00:01,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:01,929 INFO L93 Difference]: Finished difference Result 252 states and 326 transitions. [2022-11-18 21:00:01,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:01,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2022-11-18 21:00:01,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:01,932 INFO L225 Difference]: With dead ends: 252 [2022-11-18 21:00:01,932 INFO L226 Difference]: Without dead ends: 173 [2022-11-18 21:00:01,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:00:01,935 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 131 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:01,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 463 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:00:01,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-18 21:00:01,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-18 21:00:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 114 states have internal predecessors, (131), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-18 21:00:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-11-18 21:00:01,958 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 133 [2022-11-18 21:00:01,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:01,958 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-11-18 21:00:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-18 21:00:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-11-18 21:00:01,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 21:00:01,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:01,961 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:01,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:00:01,962 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:01,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1157852779, now seen corresponding path program 1 times [2022-11-18 21:00:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:01,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481522820] [2022-11-18 21:00:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:01,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:00:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:00:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:00:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:00:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:00:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:00:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:00:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:00:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:00:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:00:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:00:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 21:00:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-18 21:00:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:03,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481522820] [2022-11-18 21:00:03,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481522820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:03,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:03,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:00:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591435935] [2022-11-18 21:00:03,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:03,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:00:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:03,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:00:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:00:03,624 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 21:00:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:04,369 INFO L93 Difference]: Finished difference Result 354 states and 474 transitions. [2022-11-18 21:00:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:04,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2022-11-18 21:00:04,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:04,372 INFO L225 Difference]: With dead ends: 354 [2022-11-18 21:00:04,372 INFO L226 Difference]: Without dead ends: 198 [2022-11-18 21:00:04,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 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 21:00:04,374 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 150 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:04,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 372 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:00:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-18 21:00:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 178. [2022-11-18 21:00:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 119 states have internal predecessors, (138), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-11-18 21:00:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2022-11-18 21:00:04,400 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 132 [2022-11-18 21:00:04,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:04,401 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2022-11-18 21:00:04,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-18 21:00:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2022-11-18 21:00:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 21:00:04,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:04,404 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:04,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:00:04,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash -899687341, now seen corresponding path program 1 times [2022-11-18 21:00:04,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:04,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531041992] [2022-11-18 21:00:04,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:04,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:00:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:00:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:00:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:05,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:00:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:00:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:00:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:00:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:00:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:00:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:00:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:00:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 21:00:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 21:00:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531041992] [2022-11-18 21:00:06,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531041992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420223565] [2022-11-18 21:00:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:06,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:06,328 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:06,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:00:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:07,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:00:07,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:07,204 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 21:00:08,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-18 21:00:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 21:00:08,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:08,875 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-18 21:00:08,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420223565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:00:08,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:00:08,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 16 [2022-11-18 21:00:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542963242] [2022-11-18 21:00:08,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:08,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:00:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:08,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:00:08,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:08,879 INFO L87 Difference]: Start difference. First operand 178 states and 233 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 21:00:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:13,456 INFO L93 Difference]: Finished difference Result 500 states and 697 transitions. [2022-11-18 21:00:13,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 21:00:13,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 132 [2022-11-18 21:00:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:13,461 INFO L225 Difference]: With dead ends: 500 [2022-11-18 21:00:13,462 INFO L226 Difference]: Without dead ends: 365 [2022-11-18 21:00:13,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 275 SyntacticMatches, 15 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 21:00:13,464 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 204 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:13,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 1665 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2691 Invalid, 0 Unknown, 321 Unchecked, 3.8s Time] [2022-11-18 21:00:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-18 21:00:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 224. [2022-11-18 21:00:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 149 states have (on average 1.167785234899329) internal successors, (174), 150 states have internal predecessors, (174), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-18 21:00:13,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 297 transitions. [2022-11-18 21:00:13,516 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 297 transitions. Word has length 132 [2022-11-18 21:00:13,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:13,517 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 297 transitions. [2022-11-18 21:00:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-11-18 21:00:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 297 transitions. [2022-11-18 21:00:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-18 21:00:13,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:13,521 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:13,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:00:13,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:13,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 461444876, now seen corresponding path program 1 times [2022-11-18 21:00:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:13,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474874279] [2022-11-18 21:00:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:00:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:00:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:14,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:00:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:00:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:00:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:00:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:00:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:00:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:00:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:00:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:00:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:00:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:00:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 21:00:14,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:14,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474874279] [2022-11-18 21:00:14,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474874279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:14,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:14,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:00:14,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720768746] [2022-11-18 21:00:14,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:14,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:00:14,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:14,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:00:14,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:00:14,329 INFO L87 Difference]: Start difference. First operand 224 states and 297 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:00:15,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:15,089 INFO L93 Difference]: Finished difference Result 325 states and 429 transitions. [2022-11-18 21:00:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2022-11-18 21:00:15,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:15,092 INFO L225 Difference]: With dead ends: 325 [2022-11-18 21:00:15,092 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 21:00:15,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:00:15,094 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 207 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:15,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 412 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 21:00:15,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 21:00:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 226. [2022-11-18 21:00:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 151 states have (on average 1.1655629139072847) internal successors, (176), 152 states have internal predecessors, (176), 55 states have call successors, (55), 17 states have call predecessors, (55), 19 states have return successors, (68), 56 states have call predecessors, (68), 54 states have call successors, (68) [2022-11-18 21:00:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 299 transitions. [2022-11-18 21:00:15,130 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 299 transitions. Word has length 139 [2022-11-18 21:00:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:15,131 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 299 transitions. [2022-11-18 21:00:15,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:00:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 299 transitions. [2022-11-18 21:00:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 21:00:15,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:15,134 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:00:15,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 250358640, now seen corresponding path program 1 times [2022-11-18 21:00:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852814007] [2022-11-18 21:00:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:15,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:00:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:00:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:00:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:00:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:00:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:00:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:00:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:00:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:00:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:00:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:00:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:00:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:22,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:00:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-18 21:00:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:23,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852814007] [2022-11-18 21:00:23,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852814007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:23,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907973621] [2022-11-18 21:00:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:23,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:00:23,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:00:23,015 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:00:23,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:00:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:23,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2831 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-18 21:00:23,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:00:23,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 21:00:24,277 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 21:00:24,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 21:00:24,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:00:25,613 INFO L321 Elim1Store]: treesize reduction 38, result has 43.3 percent of original size [2022-11-18 21:00:25,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 45 [2022-11-18 21:00:27,785 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_19| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_19|) 8))) (and (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_1|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_1| 8))) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_1| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_19|)) (not (= .cse0 0)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_1|))))) is different from true [2022-11-18 21:00:30,154 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_20| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_20|) 8))) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_2|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_2| 8)) .cse0) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_2|)) (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_20|))))) is different from true [2022-11-18 21:00:30,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 51 [2022-11-18 21:00:32,541 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_21| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_3| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_21|) 8))) (and (not (= .cse0 0)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_3|)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_3|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_3| 8))) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_21|))))) is different from true [2022-11-18 21:00:34,816 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_22| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_4| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_22|) 8))) (and (not (= .cse0 0)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_4|)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_4| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_22|)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_4|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_4| 8)) .cse0)))) is different from true [2022-11-18 21:00:37,067 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_23| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_5| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_23|) 8))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_5| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_23|)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_5|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_5| 8))) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_5|)) (not (= .cse0 0))))) is different from true [2022-11-18 21:00:39,441 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_24| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_24|) 8))) (and (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_6|)) (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_6|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_6| 8))) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_6| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_24|))))) is different from true [2022-11-18 21:00:41,683 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_7| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_25|) 8))) (and (not (= .cse0 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_7| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_25|)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_7|)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_7|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_7| 8)))))) is different from true [2022-11-18 21:00:43,967 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_8| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_26|) 8))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_8| .cse0)) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_8| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_26|)) (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_8|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_8| 8)))))) is different from true [2022-11-18 21:00:46,212 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_9| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_27|) 8))) (and (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.offset_BEFORE_CALL_9| 8))) (not (= |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_9| |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to~0#1.base_BEFORE_CALL_27|)) (not (= .cse0 |v_ULTIMATE.start_aws_byte_buf_append_with_lookup_harness_~#to_old~0#1.base_BEFORE_CALL_9|))))) is different from true [2022-11-18 21:00:46,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 18 [2022-11-18 21:00:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 101 not checked. [2022-11-18 21:00:46,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:00:47,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907973621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:00:47,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:00:47,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 34] total 52 [2022-11-18 21:00:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708312746] [2022-11-18 21:00:47,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:00:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 21:00:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:47,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 21:00:47,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=2303, Unknown=9, NotChecked=936, Total=3422 [2022-11-18 21:00:47,922 INFO L87 Difference]: Start difference. First operand 226 states and 299 transitions. Second operand has 52 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 43 states have internal predecessors, (167), 19 states have call successors, (39), 20 states have call predecessors, (39), 18 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-18 21:01:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:24,377 INFO L93 Difference]: Finished difference Result 499 states and 644 transitions. [2022-11-18 21:01:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 21:01:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 43 states have internal predecessors, (167), 19 states have call successors, (39), 20 states have call predecessors, (39), 18 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) Word has length 141 [2022-11-18 21:01:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:24,381 INFO L225 Difference]: With dead ends: 499 [2022-11-18 21:01:24,381 INFO L226 Difference]: Without dead ends: 286 [2022-11-18 21:01:24,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 151 SyntacticMatches, 18 SemanticMatches, 79 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=403, Invalid=4730, Unknown=15, NotChecked=1332, Total=6480 [2022-11-18 21:01:24,387 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 170 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 5095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2629 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:24,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 2305 Invalid, 5095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2400 Invalid, 0 Unknown, 2629 Unchecked, 2.7s Time] [2022-11-18 21:01:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-18 21:01:24,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 283. [2022-11-18 21:01:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 199 states have (on average 1.170854271356784) internal successors, (233), 201 states have internal predecessors, (233), 56 states have call successors, (56), 24 states have call predecessors, (56), 27 states have return successors, (69), 57 states have call predecessors, (69), 55 states have call successors, (69) [2022-11-18 21:01:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 358 transitions. [2022-11-18 21:01:24,441 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 358 transitions. Word has length 141 [2022-11-18 21:01:24,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:24,442 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 358 transitions. [2022-11-18 21:01:24,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 47 states have (on average 3.5531914893617023) internal successors, (167), 43 states have internal predecessors, (167), 19 states have call successors, (39), 20 states have call predecessors, (39), 18 states have return successors, (35), 16 states have call predecessors, (35), 15 states have call successors, (35) [2022-11-18 21:01:24,443 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 358 transitions. [2022-11-18 21:01:24,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 21:01:24,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:24,448 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:24,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:24,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 21:01:24,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash -788225934, now seen corresponding path program 1 times [2022-11-18 21:01:24,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:24,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498745703] [2022-11-18 21:01:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:01:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 21:01:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 21:01:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:01:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:01:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:01:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:01:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:01:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:01:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:01:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:25,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 21:01:25,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:25,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498745703] [2022-11-18 21:01:25,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498745703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:25,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997646622] [2022-11-18 21:01:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:25,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:25,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:25,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:01:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:25,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2826 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:01:26,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-18 21:01:26,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:26,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997646622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:26,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:26,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-18 21:01:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115727881] [2022-11-18 21:01:26,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:26,017 INFO L87 Difference]: Start difference. First operand 283 states and 358 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:26,079 INFO L93 Difference]: Finished difference Result 528 states and 680 transitions. [2022-11-18 21:01:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 141 [2022-11-18 21:01:26,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:26,083 INFO L225 Difference]: With dead ends: 528 [2022-11-18 21:01:26,083 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 21:01:26,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:26,085 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 20 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 616 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 21:01:26,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 616 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 21:01:26,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 274. [2022-11-18 21:01:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 193 states have (on average 1.16580310880829) internal successors, (225), 194 states have internal predecessors, (225), 55 states have call successors, (55), 23 states have call predecessors, (55), 25 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-11-18 21:01:26,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 347 transitions. [2022-11-18 21:01:26,124 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 347 transitions. Word has length 141 [2022-11-18 21:01:26,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:26,125 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 347 transitions. [2022-11-18 21:01:26,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:26,126 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 347 transitions. [2022-11-18 21:01:26,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 21:01:26,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:26,129 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:26,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:26,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 21:01:26,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1150071030, now seen corresponding path program 1 times [2022-11-18 21:01:26,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:26,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467416779] [2022-11-18 21:01:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:26,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:01:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:01:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 21:01:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:01:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 21:01:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 21:01:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:01:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:01:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:01:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:01:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 21:01:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-18 21:01:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:31,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467416779] [2022-11-18 21:01:31,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467416779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:31,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:31,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 21:01:31,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308935060] [2022-11-18 21:01:31,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:31,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:01:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:31,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:01:31,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:01:31,336 INFO L87 Difference]: Start difference. First operand 274 states and 347 transitions. Second operand has 18 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-18 21:01:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:34,328 INFO L93 Difference]: Finished difference Result 328 states and 429 transitions. [2022-11-18 21:01:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:01:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 145 [2022-11-18 21:01:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:34,346 INFO L225 Difference]: With dead ends: 328 [2022-11-18 21:01:34,347 INFO L226 Difference]: Without dead ends: 326 [2022-11-18 21:01:34,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-11-18 21:01:34,349 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 459 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:34,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 699 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 21:01:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-18 21:01:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 306. [2022-11-18 21:01:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 213 states have (on average 1.1690140845070423) internal successors, (249), 215 states have internal predecessors, (249), 65 states have call successors, (65), 25 states have call predecessors, (65), 27 states have return successors, (80), 65 states have call predecessors, (80), 64 states have call successors, (80) [2022-11-18 21:01:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 394 transitions. [2022-11-18 21:01:34,405 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 394 transitions. Word has length 145 [2022-11-18 21:01:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:34,408 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 394 transitions. [2022-11-18 21:01:34,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-18 21:01:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 394 transitions. [2022-11-18 21:01:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 21:01:34,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:34,413 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:34,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:01:34,414 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 12102184, now seen corresponding path program 1 times [2022-11-18 21:01:34,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:34,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973514239] [2022-11-18 21:01:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:34,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:01:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:01:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 21:01:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:01:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 21:01:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 21:01:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:01:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:01:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:01:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:01:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 21:01:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 21:01:36,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:36,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973514239] [2022-11-18 21:01:36,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973514239] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:36,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25472582] [2022-11-18 21:01:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:36,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:36,931 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:36,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:01:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:37,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 21:01:37,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:37,803 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 21:01:39,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-18 21:01:39,145 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-18 21:01:39,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:39,519 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 21:01:39,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25472582] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:39,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:39,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 21 [2022-11-18 21:01:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710883515] [2022-11-18 21:01:39,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:39,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 21:01:39,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 21:01:39,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:01:39,525 INFO L87 Difference]: Start difference. First operand 306 states and 394 transitions. Second operand has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 16 states have internal predecessors, (131), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-18 21:01:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:43,391 INFO L93 Difference]: Finished difference Result 508 states and 671 transitions. [2022-11-18 21:01:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 21:01:43,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 16 states have internal predecessors, (131), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 148 [2022-11-18 21:01:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:43,395 INFO L225 Difference]: With dead ends: 508 [2022-11-18 21:01:43,396 INFO L226 Difference]: Without dead ends: 381 [2022-11-18 21:01:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=218, Invalid=1113, Unknown=1, NotChecked=0, Total=1332 [2022-11-18 21:01:43,398 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 265 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:43,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1403 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1901 Invalid, 0 Unknown, 227 Unchecked, 2.7s Time] [2022-11-18 21:01:43,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-18 21:01:43,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 313. [2022-11-18 21:01:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 218 states have (on average 1.165137614678899) internal successors, (254), 219 states have internal predecessors, (254), 67 states have call successors, (67), 25 states have call predecessors, (67), 27 states have return successors, (82), 68 states have call predecessors, (82), 66 states have call successors, (82) [2022-11-18 21:01:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 403 transitions. [2022-11-18 21:01:43,459 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 403 transitions. Word has length 148 [2022-11-18 21:01:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:43,459 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 403 transitions. [2022-11-18 21:01:43,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.238095238095238) internal successors, (131), 16 states have internal predecessors, (131), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-11-18 21:01:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 403 transitions. [2022-11-18 21:01:43,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-18 21:01:43,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:43,463 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:43,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 21:01:43,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:43,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash 500320288, now seen corresponding path program 1 times [2022-11-18 21:01:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:43,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059517076] [2022-11-18 21:01:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:43,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:01:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:01:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 21:01:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:01:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 21:01:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 21:01:45,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 21:01:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-18 21:01:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-18 21:01:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-18 21:01:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-18 21:01:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 21:01:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:45,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059517076] [2022-11-18 21:01:45,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059517076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:45,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514122401] [2022-11-18 21:01:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:45,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:45,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:45,388 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:45,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:01:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:46,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 21:01:46,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-18 21:01:46,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:46,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514122401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:46,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:46,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-11-18 21:01:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566615138] [2022-11-18 21:01:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:46,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:01:46,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:46,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:01:46,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:01:46,279 INFO L87 Difference]: Start difference. First operand 313 states and 403 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 21:01:46,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:46,562 INFO L93 Difference]: Finished difference Result 590 states and 767 transitions. [2022-11-18 21:01:46,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:01:46,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 152 [2022-11-18 21:01:46,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:46,565 INFO L225 Difference]: With dead ends: 590 [2022-11-18 21:01:46,566 INFO L226 Difference]: Without dead ends: 318 [2022-11-18 21:01:46,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:46,568 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 13 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:46,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1542 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:01:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-18 21:01:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 313. [2022-11-18 21:01:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 218 states have (on average 1.1605504587155964) internal successors, (253), 219 states have internal predecessors, (253), 67 states have call successors, (67), 25 states have call predecessors, (67), 27 states have return successors, (82), 68 states have call predecessors, (82), 66 states have call successors, (82) [2022-11-18 21:01:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 402 transitions. [2022-11-18 21:01:46,633 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 402 transitions. Word has length 152 [2022-11-18 21:01:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:46,634 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 402 transitions. [2022-11-18 21:01:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-18 21:01:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 402 transitions. [2022-11-18 21:01:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-18 21:01:46,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:46,638 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:46,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 21:01:46,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:46,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:46,847 INFO L85 PathProgramCache]: Analyzing trace with hash 978259387, now seen corresponding path program 1 times [2022-11-18 21:01:46,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:46,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167034110] [2022-11-18 21:01:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:46,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:01:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 21:01:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 21:01:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:01:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 21:01:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:01:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:01:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:01:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:47,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-18 21:01:47,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167034110] [2022-11-18 21:01:47,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167034110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:47,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820448474] [2022-11-18 21:01:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:47,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:47,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:47,391 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:47,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 21:01:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 2876 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:01:48,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-18 21:01:48,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:48,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820448474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:48,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:48,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-18 21:01:48,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570630289] [2022-11-18 21:01:48,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:48,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:48,220 INFO L87 Difference]: Start difference. First operand 313 states and 402 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:48,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:48,300 INFO L93 Difference]: Finished difference Result 597 states and 776 transitions. [2022-11-18 21:01:48,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:48,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2022-11-18 21:01:48,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:48,303 INFO L225 Difference]: With dead ends: 597 [2022-11-18 21:01:48,304 INFO L226 Difference]: Without dead ends: 316 [2022-11-18 21:01:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:48,306 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 9 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 614 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 21:01:48,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 614 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-18 21:01:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 310. [2022-11-18 21:01:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 215 states have (on average 1.1488372093023256) internal successors, (247), 216 states have internal predecessors, (247), 67 states have call successors, (67), 25 states have call predecessors, (67), 27 states have return successors, (82), 68 states have call predecessors, (82), 66 states have call successors, (82) [2022-11-18 21:01:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 396 transitions. [2022-11-18 21:01:48,359 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 396 transitions. Word has length 154 [2022-11-18 21:01:48,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:48,359 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 396 transitions. [2022-11-18 21:01:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 396 transitions. [2022-11-18 21:01:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-18 21:01:48,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:48,363 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:48,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:48,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 21:01:48,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:48,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1087497737, now seen corresponding path program 1 times [2022-11-18 21:01:48,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:48,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075162794] [2022-11-18 21:01:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:01:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 21:01:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 21:01:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:01:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 21:01:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:01:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:01:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:01:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:49,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-18 21:01:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:49,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075162794] [2022-11-18 21:01:49,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075162794] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:49,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474717416] [2022-11-18 21:01:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:49,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:49,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:49,153 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:49,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 21:01:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:49,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:01:49,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-18 21:01:50,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:01:50,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474717416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:50,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:01:50,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-11-18 21:01:50,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393204504] [2022-11-18 21:01:50,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:50,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:50,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:50,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:50,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:50,005 INFO L87 Difference]: Start difference. First operand 310 states and 396 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:50,087 INFO L93 Difference]: Finished difference Result 600 states and 779 transitions. [2022-11-18 21:01:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:01:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 154 [2022-11-18 21:01:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:50,091 INFO L225 Difference]: With dead ends: 600 [2022-11-18 21:01:50,091 INFO L226 Difference]: Without dead ends: 319 [2022-11-18 21:01:50,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:50,094 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 32 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:50,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-18 21:01:50,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 308. [2022-11-18 21:01:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 213 states have (on average 1.136150234741784) internal successors, (242), 214 states have internal predecessors, (242), 67 states have call successors, (67), 25 states have call predecessors, (67), 27 states have return successors, (81), 68 states have call predecessors, (81), 66 states have call successors, (81) [2022-11-18 21:01:50,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 390 transitions. [2022-11-18 21:01:50,148 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 390 transitions. Word has length 154 [2022-11-18 21:01:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:50,149 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 390 transitions. [2022-11-18 21:01:50,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:01:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 390 transitions. [2022-11-18 21:01:50,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-18 21:01:50,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:50,153 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:50,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:50,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 21:01:50,373 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:50,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:50,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1157060661, now seen corresponding path program 1 times [2022-11-18 21:01:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:50,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238339693] [2022-11-18 21:01:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:50,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:01:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 21:01:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 21:01:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:01:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 21:01:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:01:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:01:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:01:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 21:01:52,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238339693] [2022-11-18 21:01:52,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238339693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949257020] [2022-11-18 21:01:52,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:52,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:52,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:52,078 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:52,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 21:01:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:52,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 21:01:52,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 93 proven. 3 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 21:01:53,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:53,625 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-18 21:01:53,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949257020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:53,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:53,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 11] total 24 [2022-11-18 21:01:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585191692] [2022-11-18 21:01:53,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:53,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 21:01:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:53,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 21:01:53,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:01:53,629 INFO L87 Difference]: Start difference. First operand 308 states and 390 transitions. Second operand has 24 states, 21 states have (on average 6.333333333333333) internal successors, (133), 17 states have internal predecessors, (133), 5 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 21:01:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:56,000 INFO L93 Difference]: Finished difference Result 517 states and 673 transitions. [2022-11-18 21:01:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:01:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.333333333333333) internal successors, (133), 17 states have internal predecessors, (133), 5 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) Word has length 154 [2022-11-18 21:01:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:56,004 INFO L225 Difference]: With dead ends: 517 [2022-11-18 21:01:56,004 INFO L226 Difference]: Without dead ends: 329 [2022-11-18 21:01:56,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 21:01:56,006 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 194 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:56,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1599 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 21:01:56,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-18 21:01:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 313. [2022-11-18 21:01:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 217 states have (on average 1.1336405529953917) internal successors, (246), 219 states have internal predecessors, (246), 67 states have call successors, (67), 25 states have call predecessors, (67), 28 states have return successors, (87), 68 states have call predecessors, (87), 66 states have call successors, (87) [2022-11-18 21:01:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 400 transitions. [2022-11-18 21:01:56,064 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 400 transitions. Word has length 154 [2022-11-18 21:01:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:56,064 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 400 transitions. [2022-11-18 21:01:56,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.333333333333333) internal successors, (133), 17 states have internal predecessors, (133), 5 states have call successors, (35), 6 states have call predecessors, (35), 7 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-18 21:01:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 400 transitions. [2022-11-18 21:01:56,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-18 21:01:56,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:56,068 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:56,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:56,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 21:01:56,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash 416776065, now seen corresponding path program 1 times [2022-11-18 21:01:56,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387609976] [2022-11-18 21:01:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:01:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:01:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:01:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:01:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:01:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:01:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:01:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 21:01:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 21:01:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-18 21:01:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:57,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387609976] [2022-11-18 21:01:57,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387609976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:57,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:57,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:01:57,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091488805] [2022-11-18 21:01:57,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:57,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:01:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:01:57,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:01:57,338 INFO L87 Difference]: Start difference. First operand 313 states and 400 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:01:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:58,430 INFO L93 Difference]: Finished difference Result 323 states and 411 transitions. [2022-11-18 21:01:58,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:01:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 149 [2022-11-18 21:01:58,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:58,433 INFO L225 Difference]: With dead ends: 323 [2022-11-18 21:01:58,434 INFO L226 Difference]: Without dead ends: 321 [2022-11-18 21:01:58,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 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 21:01:58,435 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 152 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:58,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 763 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:01:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-18 21:01:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2022-11-18 21:01:58,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 220 states have (on average 1.1318181818181818) internal successors, (249), 222 states have internal predecessors, (249), 69 states have call successors, (69), 26 states have call predecessors, (69), 29 states have return successors, (89), 70 states have call predecessors, (89), 68 states have call successors, (89) [2022-11-18 21:01:58,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 407 transitions. [2022-11-18 21:01:58,512 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 407 transitions. Word has length 149 [2022-11-18 21:01:58,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:58,515 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 407 transitions. [2022-11-18 21:01:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:01:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 407 transitions. [2022-11-18 21:01:58,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 21:01:58,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:58,526 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:58,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:01:58,526 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:58,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:58,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1518358096, now seen corresponding path program 1 times [2022-11-18 21:01:58,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:58,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92306182] [2022-11-18 21:01:58,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:58,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:01:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:01:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:01:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:01:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:01:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:01:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:01:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:01:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:01:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:01:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:01:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:01:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-18 21:01:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92306182] [2022-11-18 21:01:59,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92306182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:59,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615531397] [2022-11-18 21:01:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:59,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:59,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:59,819 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:59,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 21:02:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:00,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:00,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-18 21:02:00,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:00,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615531397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:00,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:00,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2022-11-18 21:02:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559576171] [2022-11-18 21:02:00,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:00,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:02:00,783 INFO L87 Difference]: Start difference. First operand 319 states and 407 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:02:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:01,152 INFO L93 Difference]: Finished difference Result 529 states and 692 transitions. [2022-11-18 21:02:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 156 [2022-11-18 21:02:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:01,155 INFO L225 Difference]: With dead ends: 529 [2022-11-18 21:02:01,155 INFO L226 Difference]: Without dead ends: 319 [2022-11-18 21:02:01,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:02:01,158 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 19 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:01,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 722 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-18 21:02:01,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-18 21:02:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-18 21:02:01,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 220 states have (on average 1.1272727272727272) internal successors, (248), 222 states have internal predecessors, (248), 69 states have call successors, (69), 26 states have call predecessors, (69), 29 states have return successors, (89), 70 states have call predecessors, (89), 68 states have call successors, (89) [2022-11-18 21:02:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 406 transitions. [2022-11-18 21:02:01,212 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 406 transitions. Word has length 156 [2022-11-18 21:02:01,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:01,213 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 406 transitions. [2022-11-18 21:02:01,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 21:02:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 406 transitions. [2022-11-18 21:02:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-18 21:02:01,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:01,217 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:01,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:01,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:01,436 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:01,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:01,437 INFO L85 PathProgramCache]: Analyzing trace with hash 897478254, now seen corresponding path program 1 times [2022-11-18 21:02:01,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:01,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366237716] [2022-11-18 21:02:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:01,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:02:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:02:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:02:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:02:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-18 21:02:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:02:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-18 21:02:03,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:03,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366237716] [2022-11-18 21:02:03,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366237716] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:03,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348764803] [2022-11-18 21:02:03,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:03,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:03,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:03,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:03,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 21:02:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:04,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2883 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 21:02:04,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:04,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:06,347 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:02:06,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-18 21:02:06,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 21:02:06,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:06,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 21:02:07,077 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-18 21:02:07,078 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 29 treesize of output 33 [2022-11-18 21:02:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 94 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-18 21:02:07,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:09,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348764803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:09,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:09,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24] total 35 [2022-11-18 21:02:09,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908807707] [2022-11-18 21:02:09,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 21:02:09,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 21:02:09,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1886, Unknown=9, NotChecked=0, Total=2070 [2022-11-18 21:02:09,192 INFO L87 Difference]: Start difference. First operand 319 states and 406 transitions. Second operand has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 28 states have internal predecessors, (166), 12 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 12 states have call successors, (35) [2022-11-18 21:02:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:16,430 INFO L93 Difference]: Finished difference Result 844 states and 1161 transitions. [2022-11-18 21:02:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 21:02:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 28 states have internal predecessors, (166), 12 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 12 states have call successors, (35) Word has length 156 [2022-11-18 21:02:16,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:16,437 INFO L225 Difference]: With dead ends: 844 [2022-11-18 21:02:16,438 INFO L226 Difference]: Without dead ends: 639 [2022-11-18 21:02:16,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 249 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=373, Invalid=4310, Unknown=9, NotChecked=0, Total=4692 [2022-11-18 21:02:16,442 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 471 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 7058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2691 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:16,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 2443 Invalid, 7058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 3866 Invalid, 0 Unknown, 2691 Unchecked, 5.2s Time] [2022-11-18 21:02:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-11-18 21:02:16,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 394. [2022-11-18 21:02:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 277 states have (on average 1.1335740072202165) internal successors, (314), 282 states have internal predecessors, (314), 80 states have call successors, (80), 32 states have call predecessors, (80), 36 states have return successors, (103), 79 states have call predecessors, (103), 79 states have call successors, (103) [2022-11-18 21:02:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 497 transitions. [2022-11-18 21:02:16,540 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 497 transitions. Word has length 156 [2022-11-18 21:02:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:16,541 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 497 transitions. [2022-11-18 21:02:16,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.882352941176471) internal successors, (166), 28 states have internal predecessors, (166), 12 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (35), 11 states have call predecessors, (35), 12 states have call successors, (35) [2022-11-18 21:02:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 497 transitions. [2022-11-18 21:02:16,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 21:02:16,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:16,544 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:16,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:16,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:16,757 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:16,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash -700725751, now seen corresponding path program 1 times [2022-11-18 21:02:16,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:16,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035511594] [2022-11-18 21:02:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:16,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:02:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:02:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:02:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 21:02:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:02:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-18 21:02:17,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:17,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035511594] [2022-11-18 21:02:17,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035511594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:17,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655437207] [2022-11-18 21:02:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:17,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:17,747 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:17,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 21:02:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:18,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 21:02:18,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:18,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:18,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 21:02:19,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:19,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655437207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:19,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:19,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2022-11-18 21:02:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203726050] [2022-11-18 21:02:19,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:02:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:02:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:02:19,303 INFO L87 Difference]: Start difference. First operand 394 states and 497 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-18 21:02:19,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:19,634 INFO L93 Difference]: Finished difference Result 779 states and 1048 transitions. [2022-11-18 21:02:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:02:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 148 [2022-11-18 21:02:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:19,640 INFO L225 Difference]: With dead ends: 779 [2022-11-18 21:02:19,640 INFO L226 Difference]: Without dead ends: 525 [2022-11-18 21:02:19,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:02:19,643 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 86 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:19,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 1537 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 54 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2022-11-18 21:02:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-18 21:02:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 412. [2022-11-18 21:02:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 292 states have (on average 1.1335616438356164) internal successors, (331), 298 states have internal predecessors, (331), 82 states have call successors, (82), 34 states have call predecessors, (82), 37 states have return successors, (107), 79 states have call predecessors, (107), 81 states have call successors, (107) [2022-11-18 21:02:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 520 transitions. [2022-11-18 21:02:19,741 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 520 transitions. Word has length 148 [2022-11-18 21:02:19,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:19,741 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 520 transitions. [2022-11-18 21:02:19,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-18 21:02:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 520 transitions. [2022-11-18 21:02:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-18 21:02:19,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:19,745 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:19,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:19,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:19,958 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:19,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:19,958 INFO L85 PathProgramCache]: Analyzing trace with hash -460486005, now seen corresponding path program 1 times [2022-11-18 21:02:19,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:19,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744457247] [2022-11-18 21:02:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:19,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-18 21:02:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:02:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:02:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 21:02:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 21:02:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-11-18 21:02:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744457247] [2022-11-18 21:02:20,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744457247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:20,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625205572] [2022-11-18 21:02:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:20,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:20,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:20,410 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:20,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 21:02:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:21,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 21:02:21,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-18 21:02:21,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:21,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625205572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:21,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:21,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-18 21:02:21,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068224419] [2022-11-18 21:02:21,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:21,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:02:21,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:21,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:02:21,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:21,217 INFO L87 Difference]: Start difference. First operand 412 states and 520 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 21:02:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:21,328 INFO L93 Difference]: Finished difference Result 669 states and 864 transitions. [2022-11-18 21:02:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:02:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-11-18 21:02:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:21,331 INFO L225 Difference]: With dead ends: 669 [2022-11-18 21:02:21,332 INFO L226 Difference]: Without dead ends: 415 [2022-11-18 21:02:21,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:02:21,334 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:21,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 612 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:02:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-18 21:02:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 406. [2022-11-18 21:02:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 287 states have (on average 1.1254355400696865) internal successors, (323), 293 states have internal predecessors, (323), 81 states have call successors, (81), 33 states have call predecessors, (81), 37 states have return successors, (104), 79 states have call predecessors, (104), 80 states have call successors, (104) [2022-11-18 21:02:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 508 transitions. [2022-11-18 21:02:21,426 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 508 transitions. Word has length 148 [2022-11-18 21:02:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:21,426 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 508 transitions. [2022-11-18 21:02:21,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 21:02:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 508 transitions. [2022-11-18 21:02:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-18 21:02:21,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:21,429 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:21,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:21,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 21:02:21,641 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 374563591, now seen corresponding path program 1 times [2022-11-18 21:02:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:21,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881794370] [2022-11-18 21:02:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:02:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 21:02:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:02:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:02:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 21:02:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-11-18 21:02:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 21:02:25,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881794370] [2022-11-18 21:02:25,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881794370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457715145] [2022-11-18 21:02:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:25,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:25,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:25,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:25,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 21:02:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-18 21:02:26,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:26,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:26,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:28,285 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:02:28,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-18 21:02:28,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:02:28,312 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 21:02:28,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 21:02:28,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:02:28,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-18 21:02:31,572 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1871 Int) (v_ArrVal_1870 Int) (v_ArrVal_1872 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_1870)) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_1871)) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_1872))) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2022-11-18 21:02:31,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:31,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:31,648 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:02:31,653 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:02:31,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 58 [2022-11-18 21:02:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:31,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 46 [2022-11-18 21:02:31,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:31,679 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:02:31,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 49 [2022-11-18 21:02:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 65 proven. 54 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 21:02:33,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:36,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457715145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:36,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:36,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 29] total 45 [2022-11-18 21:02:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215830615] [2022-11-18 21:02:36,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:36,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 21:02:36,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:36,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 21:02:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2541, Unknown=1, NotChecked=102, Total=2862 [2022-11-18 21:02:36,538 INFO L87 Difference]: Start difference. First operand 406 states and 508 transitions. Second operand has 45 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 38 states have internal predecessors, (162), 20 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (36), 19 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 21:02:41,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:41,173 INFO L93 Difference]: Finished difference Result 764 states and 976 transitions. [2022-11-18 21:02:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-18 21:02:41,174 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 38 states have internal predecessors, (162), 20 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (36), 19 states have call predecessors, (36), 20 states have call successors, (36) Word has length 153 [2022-11-18 21:02:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:41,177 INFO L225 Difference]: With dead ends: 764 [2022-11-18 21:02:41,178 INFO L226 Difference]: Without dead ends: 527 [2022-11-18 21:02:41,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 166 SyntacticMatches, 20 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2480 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=558, Invalid=6583, Unknown=3, NotChecked=166, Total=7310 [2022-11-18 21:02:41,183 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 373 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1322 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:41,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 1822 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 2084 Invalid, 0 Unknown, 1322 Unchecked, 2.2s Time] [2022-11-18 21:02:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-11-18 21:02:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 484. [2022-11-18 21:02:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 351 states have (on average 1.1196581196581197) internal successors, (393), 360 states have internal predecessors, (393), 88 states have call successors, (88), 38 states have call predecessors, (88), 44 states have return successors, (110), 85 states have call predecessors, (110), 87 states have call successors, (110) [2022-11-18 21:02:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 591 transitions. [2022-11-18 21:02:41,328 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 591 transitions. Word has length 153 [2022-11-18 21:02:41,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:41,329 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 591 transitions. [2022-11-18 21:02:41,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 38 states have internal predecessors, (162), 20 states have call successors, (37), 8 states have call predecessors, (37), 9 states have return successors, (36), 19 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 21:02:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 591 transitions. [2022-11-18 21:02:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-18 21:02:41,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:41,332 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:41,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:41,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:41,544 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:41,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1243028721, now seen corresponding path program 1 times [2022-11-18 21:02:41,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:41,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790886576] [2022-11-18 21:02:41,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:42,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:02:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:02:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 21:02:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 21:02:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:02:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 21:02:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 21:02:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-18 21:02:42,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790886576] [2022-11-18 21:02:42,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790886576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364976247] [2022-11-18 21:02:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:42,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:42,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:42,645 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:42,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 21:02:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:43,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2841 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 21:02:43,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:43,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:44,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:44,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 21:02:45,824 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2001 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_2001)))) is different from true [2022-11-18 21:02:45,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:02:45,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 21:02:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 69 proven. 26 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 21:02:46,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:02:46,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364976247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:46,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:02:46,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 28 [2022-11-18 21:02:46,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811856038] [2022-11-18 21:02:46,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:02:46,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 21:02:46,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:46,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 21:02:46,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=959, Unknown=1, NotChecked=62, Total=1122 [2022-11-18 21:02:46,982 INFO L87 Difference]: Start difference. First operand 484 states and 591 transitions. Second operand has 28 states, 26 states have (on average 6.115384615384615) internal successors, (159), 24 states have internal predecessors, (159), 11 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 11 states have call successors, (35) [2022-11-18 21:02:50,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:50,097 INFO L93 Difference]: Finished difference Result 793 states and 988 transitions. [2022-11-18 21:02:50,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 21:02:50,111 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 6.115384615384615) internal successors, (159), 24 states have internal predecessors, (159), 11 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 11 states have call successors, (35) Word has length 157 [2022-11-18 21:02:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:50,114 INFO L225 Difference]: With dead ends: 793 [2022-11-18 21:02:50,115 INFO L226 Difference]: Without dead ends: 447 [2022-11-18 21:02:50,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 61 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=381, Invalid=3404, Unknown=1, NotChecked=120, Total=3906 [2022-11-18 21:02:50,118 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 133 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:50,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1384 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1692 Invalid, 0 Unknown, 557 Unchecked, 1.6s Time] [2022-11-18 21:02:50,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-18 21:02:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 430. [2022-11-18 21:02:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 308 states have (on average 1.0974025974025974) internal successors, (338), 316 states have internal predecessors, (338), 80 states have call successors, (80), 36 states have call predecessors, (80), 41 states have return successors, (103), 77 states have call predecessors, (103), 79 states have call successors, (103) [2022-11-18 21:02:50,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 521 transitions. [2022-11-18 21:02:50,227 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 521 transitions. Word has length 157 [2022-11-18 21:02:50,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:50,227 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 521 transitions. [2022-11-18 21:02:50,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 6.115384615384615) internal successors, (159), 24 states have internal predecessors, (159), 11 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (35), 10 states have call predecessors, (35), 11 states have call successors, (35) [2022-11-18 21:02:50,228 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 521 transitions. [2022-11-18 21:02:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:02:50,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:50,230 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:50,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:50,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 21:02:50,449 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:50,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1483978520, now seen corresponding path program 2 times [2022-11-18 21:02:50,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:50,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703439641] [2022-11-18 21:02:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:02:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:02:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:02:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:02:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:02:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:02:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:02:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:02:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:02:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:02:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:02:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:02:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:02:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:02:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 21:02:56,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:56,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703439641] [2022-11-18 21:02:56,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703439641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:56,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627385912] [2022-11-18 21:02:56,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 21:02:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:56,988 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:57,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 21:02:57,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 21:02:57,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 21:02:57,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-18 21:02:57,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:58,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:58,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:58,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:02:59,069 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 21:02:59,074 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:02:59,087 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-18 21:02:59,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 21:02:59,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 21:03:01,919 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2131 Int) (v_ArrVal_2132 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int) (v_ArrVal_2129 Int)) (and (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_2131)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_2132)) |c_#memory_$Pointer$.offset|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_2129))) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2022-11-18 21:03:01,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:01,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:01,975 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 21:03:01,980 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:03:01,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 21:03:01,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:01,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-18 21:03:02,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:02,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-18 21:03:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 137 proven. 12 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 21:03:03,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:06,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627385912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:06,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:03:06,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 49 [2022-11-18 21:03:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211395353] [2022-11-18 21:03:06,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 21:03:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 21:03:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=2949, Unknown=1, NotChecked=110, Total=3306 [2022-11-18 21:03:06,641 INFO L87 Difference]: Start difference. First operand 430 states and 521 transitions. Second operand has 49 states, 47 states have (on average 4.085106382978723) internal successors, (192), 44 states have internal predecessors, (192), 21 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 21:03:12,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:12,644 INFO L93 Difference]: Finished difference Result 776 states and 1017 transitions. [2022-11-18 21:03:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 21:03:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 4.085106382978723) internal successors, (192), 44 states have internal predecessors, (192), 21 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) Word has length 159 [2022-11-18 21:03:12,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:12,649 INFO L225 Difference]: With dead ends: 776 [2022-11-18 21:03:12,650 INFO L226 Difference]: Without dead ends: 595 [2022-11-18 21:03:12,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 187 SyntacticMatches, 20 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3038 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=691, Invalid=7684, Unknown=1, NotChecked=180, Total=8556 [2022-11-18 21:03:12,655 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 317 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1378 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:12,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1572 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1838 Invalid, 0 Unknown, 1378 Unchecked, 2.3s Time] [2022-11-18 21:03:12,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-18 21:03:12,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 526. [2022-11-18 21:03:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 378 states have (on average 1.0952380952380953) internal successors, (414), 389 states have internal predecessors, (414), 100 states have call successors, (100), 39 states have call predecessors, (100), 47 states have return successors, (147), 97 states have call predecessors, (147), 99 states have call successors, (147) [2022-11-18 21:03:12,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 661 transitions. [2022-11-18 21:03:12,791 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 661 transitions. Word has length 159 [2022-11-18 21:03:12,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:12,792 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 661 transitions. [2022-11-18 21:03:12,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 4.085106382978723) internal successors, (192), 44 states have internal predecessors, (192), 21 states have call successors, (37), 8 states have call predecessors, (37), 12 states have return successors, (36), 20 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-18 21:03:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 661 transitions. [2022-11-18 21:03:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:03:12,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:12,796 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:12,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:13,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 21:03:13,010 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1642398498, now seen corresponding path program 1 times [2022-11-18 21:03:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:13,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384712329] [2022-11-18 21:03:13,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:03:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:03:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:03:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:03:16,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:03:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:03:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:03:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:03:16,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:03:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:03:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:03:16,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:03:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:03:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:03:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:03:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:17,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:03:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:17,272 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-18 21:03:17,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384712329] [2022-11-18 21:03:17,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384712329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:17,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453687529] [2022-11-18 21:03:17,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:17,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:17,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:17,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:17,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 21:03:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:18,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-18 21:03:18,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:19,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:03:20,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:20,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:20,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:03:20,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2022-11-18 21:03:24,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:03:24,693 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-11-18 21:03:24,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 54 [2022-11-18 21:03:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 63 proven. 41 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-18 21:03:38,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:03:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-18 21:03:43,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453687529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:03:43,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:03:43,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 32, 20] total 67 [2022-11-18 21:03:43,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465678241] [2022-11-18 21:03:43,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:03:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-18 21:03:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:43,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-18 21:03:43,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=4147, Unknown=5, NotChecked=0, Total=4422 [2022-11-18 21:03:43,351 INFO L87 Difference]: Start difference. First operand 526 states and 661 transitions. Second operand has 67 states, 62 states have (on average 3.661290322580645) internal successors, (227), 59 states have internal predecessors, (227), 22 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (45), 17 states have call predecessors, (45), 21 states have call successors, (45) [2022-11-18 21:04:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:21,935 INFO L93 Difference]: Finished difference Result 1220 states and 1826 transitions. [2022-11-18 21:04:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-11-18 21:04:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 62 states have (on average 3.661290322580645) internal successors, (227), 59 states have internal predecessors, (227), 22 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (45), 17 states have call predecessors, (45), 21 states have call successors, (45) Word has length 159 [2022-11-18 21:04:21,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:21,945 INFO L225 Difference]: With dead ends: 1220 [2022-11-18 21:04:21,946 INFO L226 Difference]: Without dead ends: 1078 [2022-11-18 21:04:21,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 309 SyntacticMatches, 17 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5324 ImplicationChecksByTransitivity, 45.6s TimeCoverageRelationStatistics Valid=1191, Invalid=15559, Unknown=20, NotChecked=0, Total=16770 [2022-11-18 21:04:21,952 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 703 mSDsluCounter, 4712 mSDsCounter, 0 mSdLazyCounter, 7106 mSolverCounterSat, 653 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 5076 SdHoareTripleChecker+Invalid, 11017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 7106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3258 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:21,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 5076 Invalid, 11017 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [653 Valid, 7106 Invalid, 0 Unknown, 3258 Unchecked, 13.1s Time] [2022-11-18 21:04:21,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-11-18 21:04:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 613. [2022-11-18 21:04:22,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 439 states have (on average 1.0956719817767653) internal successors, (481), 454 states have internal predecessors, (481), 120 states have call successors, (120), 42 states have call predecessors, (120), 53 states have return successors, (187), 116 states have call predecessors, (187), 119 states have call successors, (187) [2022-11-18 21:04:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 788 transitions. [2022-11-18 21:04:22,153 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 788 transitions. Word has length 159 [2022-11-18 21:04:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:22,154 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 788 transitions. [2022-11-18 21:04:22,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 62 states have (on average 3.661290322580645) internal successors, (227), 59 states have internal predecessors, (227), 22 states have call successors, (46), 8 states have call predecessors, (46), 14 states have return successors, (45), 17 states have call predecessors, (45), 21 states have call successors, (45) [2022-11-18 21:04:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 788 transitions. [2022-11-18 21:04:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:04:22,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:22,158 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:22,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:22,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 21:04:22,367 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1384233060, now seen corresponding path program 1 times [2022-11-18 21:04:22,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:22,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921451661] [2022-11-18 21:04:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:22,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:04:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:04:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:04:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:04:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:04:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:04:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:04:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:04:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:04:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:04:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:04:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:04:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:04:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:04:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:04:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-18 21:04:23,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:23,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921451661] [2022-11-18 21:04:23,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921451661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:23,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:23,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:04:23,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817864282] [2022-11-18 21:04:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:23,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:04:23,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:23,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:04:23,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:04:23,398 INFO L87 Difference]: Start difference. First operand 613 states and 788 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:04:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:24,398 INFO L93 Difference]: Finished difference Result 784 states and 1011 transitions. [2022-11-18 21:04:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:04:24,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-11-18 21:04:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:24,403 INFO L225 Difference]: With dead ends: 784 [2022-11-18 21:04:24,403 INFO L226 Difference]: Without dead ends: 604 [2022-11-18 21:04:24,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:04:24,406 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 163 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:24,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 443 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 21:04:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-11-18 21:04:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2022-11-18 21:04:24,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 431 states have (on average 1.0904872389791183) internal successors, (470), 445 states have internal predecessors, (470), 120 states have call successors, (120), 42 states have call predecessors, (120), 52 states have return successors, (177), 116 states have call predecessors, (177), 119 states have call successors, (177) [2022-11-18 21:04:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 767 transitions. [2022-11-18 21:04:24,569 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 767 transitions. Word has length 159 [2022-11-18 21:04:24,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:24,570 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 767 transitions. [2022-11-18 21:04:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:04:24,571 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 767 transitions. [2022-11-18 21:04:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:04:24,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:24,575 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 21:04:24,575 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:24,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1972025626, now seen corresponding path program 1 times [2022-11-18 21:04:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203004779] [2022-11-18 21:04:24,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:04:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:04:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:04:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:04:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:04:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:04:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:04:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:04:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:04:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:28,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:04:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:04:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:04:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:04:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:04:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:04:29,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:04:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-18 21:04:29,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:29,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203004779] [2022-11-18 21:04:29,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203004779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:29,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744290261] [2022-11-18 21:04:29,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:29,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:04:29,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:04:29,395 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:04:29,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 21:04:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:30,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-18 21:04:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:04:30,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:04:31,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:31,946 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 21:04:31,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 48 [2022-11-18 21:04:36,190 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2440 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int)) (and (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_2440)) |c_#memory_int|) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2022-11-18 21:04:36,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:36,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:04:36,259 INFO L321 Elim1Store]: treesize reduction 40, result has 36.5 percent of original size [2022-11-18 21:04:36,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 59 [2022-11-18 21:04:37,494 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 87 proven. 50 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-18 21:04:37,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:04:38,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744290261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:04:38,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:04:38,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 31] total 49 [2022-11-18 21:04:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749460411] [2022-11-18 21:04:38,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:04:38,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-18 21:04:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:38,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-18 21:04:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2640, Unknown=1, NotChecked=104, Total=2970 [2022-11-18 21:04:38,599 INFO L87 Difference]: Start difference. First operand 604 states and 767 transitions. Second operand has 49 states, 47 states have (on average 3.765957446808511) internal successors, (177), 41 states have internal predecessors, (177), 21 states have call successors, (34), 9 states have call predecessors, (34), 9 states have return successors, (34), 17 states have call predecessors, (34), 21 states have call successors, (34) [2022-11-18 21:04:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:58,572 INFO L93 Difference]: Finished difference Result 1191 states and 1709 transitions. [2022-11-18 21:04:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-18 21:04:58,573 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 3.765957446808511) internal successors, (177), 41 states have internal predecessors, (177), 21 states have call successors, (34), 9 states have call predecessors, (34), 9 states have return successors, (34), 17 states have call predecessors, (34), 21 states have call successors, (34) Word has length 159 [2022-11-18 21:04:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:58,581 INFO L225 Difference]: With dead ends: 1191 [2022-11-18 21:04:58,582 INFO L226 Difference]: Without dead ends: 987 [2022-11-18 21:04:58,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 192 SyntacticMatches, 18 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3282 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=922, Invalid=8971, Unknown=11, NotChecked=196, Total=10100 [2022-11-18 21:04:58,585 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 607 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 8751 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 14437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 8751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5171 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:58,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 4348 Invalid, 14437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [515 Valid, 8751 Invalid, 0 Unknown, 5171 Unchecked, 13.1s Time] [2022-11-18 21:04:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-18 21:04:58,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 621. [2022-11-18 21:04:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 450 states have (on average 1.0933333333333333) internal successors, (492), 463 states have internal predecessors, (492), 116 states have call successors, (116), 45 states have call predecessors, (116), 54 states have return successors, (175), 112 states have call predecessors, (175), 115 states have call successors, (175) [2022-11-18 21:04:58,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 783 transitions. [2022-11-18 21:04:58,818 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 783 transitions. Word has length 159 [2022-11-18 21:04:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:58,819 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 783 transitions. [2022-11-18 21:04:58,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 3.765957446808511) internal successors, (177), 41 states have internal predecessors, (177), 21 states have call successors, (34), 9 states have call predecessors, (34), 9 states have return successors, (34), 17 states have call predecessors, (34), 21 states have call successors, (34) [2022-11-18 21:04:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 783 transitions. [2022-11-18 21:04:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:04:58,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:58,824 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:58,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-18 21:04:59,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 21:04:59,044 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2135024672, now seen corresponding path program 1 times [2022-11-18 21:04:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865843935] [2022-11-18 21:04:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:05:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:05:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:05:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:05:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:05:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:05:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:05:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:05:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:05:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:05:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:02,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:05:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:05:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:05:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:05:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:05:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-18 21:05:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865843935] [2022-11-18 21:05:03,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865843935] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:03,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424645973] [2022-11-18 21:05:03,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:03,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:03,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:03,097 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:03,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 21:05:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:03,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 89 conjunts are in the unsatisfiable core [2022-11-18 21:05:03,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:04,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:05:04,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2022-11-18 21:05:04,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 21:05:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 135 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 21:05:06,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:09,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424645973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:09,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:05:09,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 35 [2022-11-18 21:05:09,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487902088] [2022-11-18 21:05:09,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:09,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 21:05:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:09,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 21:05:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1487, Unknown=2, NotChecked=0, Total=1640 [2022-11-18 21:05:09,326 INFO L87 Difference]: Start difference. First operand 621 states and 783 transitions. Second operand has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 30 states have internal predecessors, (161), 17 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 14 states have call predecessors, (36), 17 states have call successors, (36) [2022-11-18 21:05:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:22,875 INFO L93 Difference]: Finished difference Result 1074 states and 1479 transitions. [2022-11-18 21:05:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 21:05:22,876 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 30 states have internal predecessors, (161), 17 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 14 states have call predecessors, (36), 17 states have call successors, (36) Word has length 159 [2022-11-18 21:05:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:22,882 INFO L225 Difference]: With dead ends: 1074 [2022-11-18 21:05:22,882 INFO L226 Difference]: Without dead ends: 807 [2022-11-18 21:05:22,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 278 SyntacticMatches, 18 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=534, Invalid=4720, Unknown=2, NotChecked=0, Total=5256 [2022-11-18 21:05:22,886 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 656 mSDsluCounter, 2961 mSDsCounter, 0 mSdLazyCounter, 6974 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 9319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 6974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1668 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:22,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 3216 Invalid, 9319 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [677 Valid, 6974 Invalid, 0 Unknown, 1668 Unchecked, 10.0s Time] [2022-11-18 21:05:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-11-18 21:05:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 572. [2022-11-18 21:05:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 409 states have (on average 1.0904645476772616) internal successors, (446), 422 states have internal predecessors, (446), 112 states have call successors, (112), 42 states have call predecessors, (112), 50 states have return successors, (169), 107 states have call predecessors, (169), 111 states have call successors, (169) [2022-11-18 21:05:23,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 727 transitions. [2022-11-18 21:05:23,154 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 727 transitions. Word has length 159 [2022-11-18 21:05:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:23,155 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 727 transitions. [2022-11-18 21:05:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.878787878787879) internal successors, (161), 30 states have internal predecessors, (161), 17 states have call successors, (37), 5 states have call predecessors, (37), 8 states have return successors, (36), 14 states have call predecessors, (36), 17 states have call successors, (36) [2022-11-18 21:05:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 727 transitions. [2022-11-18 21:05:23,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:05:23,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:23,159 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:23,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:23,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:23,372 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:23,372 INFO L85 PathProgramCache]: Analyzing trace with hash 199535774, now seen corresponding path program 1 times [2022-11-18 21:05:23,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:23,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979643437] [2022-11-18 21:05:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:23,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:05:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:05:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:05:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:05:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:05:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:05:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:05:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:05:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:05:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:05:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:05:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:05:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:05:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:05:29,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:05:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:05:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-18 21:05:29,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:29,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979643437] [2022-11-18 21:05:29,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979643437] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:29,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121443004] [2022-11-18 21:05:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:29,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:29,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:29,801 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:29,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 21:05:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 113 conjunts are in the unsatisfiable core [2022-11-18 21:05:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:30,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:05:31,960 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:05:31,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-18 21:05:36,362 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2670 Int)) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |c_aws_add_size_checked_#in~r#1.offset| v_ArrVal_2670)) |c_#memory_int|)) is different from true [2022-11-18 21:05:36,406 INFO L321 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-11-18 21:05:36,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 48 [2022-11-18 21:05:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 99 proven. 50 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 21:05:37,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:05:38,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121443004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:38,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:05:38,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 33] total 55 [2022-11-18 21:05:38,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023273343] [2022-11-18 21:05:38,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:05:38,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 21:05:38,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:38,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 21:05:38,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=3291, Unknown=1, NotChecked=116, Total=3660 [2022-11-18 21:05:38,640 INFO L87 Difference]: Start difference. First operand 572 states and 727 transitions. Second operand has 55 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 49 states have internal predecessors, (185), 21 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 21:05:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:56,023 INFO L93 Difference]: Finished difference Result 826 states and 1062 transitions. [2022-11-18 21:05:56,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-18 21:05:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 49 states have internal predecessors, (185), 21 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) Word has length 159 [2022-11-18 21:05:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:56,031 INFO L225 Difference]: With dead ends: 826 [2022-11-18 21:05:56,032 INFO L226 Difference]: Without dead ends: 655 [2022-11-18 21:05:56,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 190 SyntacticMatches, 18 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1211, Invalid=11442, Unknown=7, NotChecked=222, Total=12882 [2022-11-18 21:05:56,037 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 712 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 7008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1614 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 1893 Invalid, 7008 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [370 Valid, 5024 Invalid, 0 Unknown, 1614 Unchecked, 7.2s Time] [2022-11-18 21:05:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-11-18 21:05:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 587. [2022-11-18 21:05:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 423 states have (on average 1.0874704491725768) internal successors, (460), 436 states have internal predecessors, (460), 112 states have call successors, (112), 43 states have call predecessors, (112), 51 states have return successors, (165), 107 states have call predecessors, (165), 111 states have call successors, (165) [2022-11-18 21:05:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 737 transitions. [2022-11-18 21:05:56,285 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 737 transitions. Word has length 159 [2022-11-18 21:05:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:56,285 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 737 transitions. [2022-11-18 21:05:56,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 52 states have (on average 3.5576923076923075) internal successors, (185), 49 states have internal predecessors, (185), 21 states have call successors, (34), 9 states have call predecessors, (34), 13 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 21:05:56,286 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 737 transitions. [2022-11-18 21:05:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 21:05:56,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:56,289 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:56,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:56,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:56,503 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:56,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1646977566, now seen corresponding path program 1 times [2022-11-18 21:05:56,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:56,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988296769] [2022-11-18 21:05:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:56,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:06:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:06:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:06:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:03,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:03,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:06:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:06:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:06:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:06:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:06:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:06:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:06:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:06:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:06:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:06:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:06:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:06:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:06:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-11-18 21:06:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:04,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988296769] [2022-11-18 21:06:04,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988296769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735521363] [2022-11-18 21:06:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:04,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:04,949 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:04,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-18 21:06:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 145 conjunts are in the unsatisfiable core [2022-11-18 21:06:06,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:06,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:06:14,399 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:06:14,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2022-11-18 21:06:14,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:06:14,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-18 21:06:21,445 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-18 21:06:21,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 52 [2022-11-18 21:06:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 127 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 21:06:23,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:06:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735521363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:50,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:06:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 34] total 55 [2022-11-18 21:06:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612628338] [2022-11-18 21:06:50,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:06:50,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-18 21:06:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-18 21:06:50,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=4791, Unknown=10, NotChecked=0, Total=5112 [2022-11-18 21:06:50,837 INFO L87 Difference]: Start difference. First operand 587 states and 737 transitions. Second operand has 55 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 50 states have internal predecessors, (178), 21 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 21:07:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:26,564 INFO L93 Difference]: Finished difference Result 1038 states and 1429 transitions. [2022-11-18 21:07:26,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-18 21:07:26,566 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 50 states have internal predecessors, (178), 21 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) Word has length 159 [2022-11-18 21:07:26,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:26,570 INFO L225 Difference]: With dead ends: 1038 [2022-11-18 21:07:26,570 INFO L226 Difference]: Without dead ends: 851 [2022-11-18 21:07:26,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 245 SyntacticMatches, 18 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5947 ImplicationChecksByTransitivity, 58.1s TimeCoverageRelationStatistics Valid=1586, Invalid=17843, Unknown=31, NotChecked=0, Total=19460 [2022-11-18 21:07:26,575 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 978 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 8800 mSolverCounterSat, 1221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 12571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1221 IncrementalHoareTripleChecker+Valid, 8800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2550 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:26,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 2509 Invalid, 12571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1221 Valid, 8800 Invalid, 0 Unknown, 2550 Unchecked, 19.0s Time] [2022-11-18 21:07:26,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-18 21:07:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 620. [2022-11-18 21:07:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 443 states have (on average 1.0880361173814899) internal successors, (482), 457 states have internal predecessors, (482), 124 states have call successors, (124), 43 states have call predecessors, (124), 52 states have return successors, (177), 119 states have call predecessors, (177), 123 states have call successors, (177) [2022-11-18 21:07:26,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 783 transitions. [2022-11-18 21:07:26,868 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 783 transitions. Word has length 159 [2022-11-18 21:07:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:26,869 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 783 transitions. [2022-11-18 21:07:26,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 51 states have (on average 3.4901960784313726) internal successors, (178), 50 states have internal predecessors, (178), 21 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (33), 16 states have call predecessors, (33), 20 states have call successors, (33) [2022-11-18 21:07:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 783 transitions. [2022-11-18 21:07:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-18 21:07:26,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:26,873 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:26,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-18 21:07:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:27,090 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash 552050607, now seen corresponding path program 1 times [2022-11-18 21:07:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:27,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401203229] [2022-11-18 21:07:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:07:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:07:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:07:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:07:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:07:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:07:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:07:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:07:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:07:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:31,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:07:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:07:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:07:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:07:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:07:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:07:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:07:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 21:07:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 21:07:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:32,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401203229] [2022-11-18 21:07:32,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401203229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:32,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:32,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-11-18 21:07:32,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736458046] [2022-11-18 21:07:32,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:32,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 21:07:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:32,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 21:07:32,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:07:32,340 INFO L87 Difference]: Start difference. First operand 620 states and 783 transitions. Second operand has 23 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-18 21:07:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:37,243 INFO L93 Difference]: Finished difference Result 730 states and 935 transitions. [2022-11-18 21:07:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:07:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 162 [2022-11-18 21:07:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:37,248 INFO L225 Difference]: With dead ends: 730 [2022-11-18 21:07:37,249 INFO L226 Difference]: Without dead ends: 728 [2022-11-18 21:07:37,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=231, Invalid=1251, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 21:07:37,250 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 375 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:37,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 1095 Invalid, 2976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 21:07:37,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-18 21:07:37,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 682. [2022-11-18 21:07:37,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 491 states have (on average 1.0916496945010183) internal successors, (536), 507 states have internal predecessors, (536), 134 states have call successors, (134), 45 states have call predecessors, (134), 56 states have return successors, (193), 129 states have call predecessors, (193), 133 states have call successors, (193) [2022-11-18 21:07:37,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 863 transitions. [2022-11-18 21:07:37,623 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 863 transitions. Word has length 162 [2022-11-18 21:07:37,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:37,623 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 863 transitions. [2022-11-18 21:07:37,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.8) internal successors, (76), 18 states have internal predecessors, (76), 10 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-18 21:07:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 863 transitions. [2022-11-18 21:07:37,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-18 21:07:37,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:37,627 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:37,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 21:07:37,627 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:37,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:37,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1575989291, now seen corresponding path program 1 times [2022-11-18 21:07:37,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:37,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409220562] [2022-11-18 21:07:37,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:37,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:07:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:07:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:07:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:07:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:07:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:07:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:07:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:07:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:07:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:07:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:07:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:07:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:07:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:07:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:07:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:07:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 21:07:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-18 21:07:41,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:41,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409220562] [2022-11-18 21:07:41,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409220562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:41,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:41,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-18 21:07:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996607424] [2022-11-18 21:07:41,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 21:07:41,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 21:07:41,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:07:41,895 INFO L87 Difference]: Start difference. First operand 682 states and 863 transitions. Second operand has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 15 states have internal predecessors, (76), 11 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-18 21:07:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:45,470 INFO L93 Difference]: Finished difference Result 706 states and 901 transitions. [2022-11-18 21:07:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:07:45,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 15 states have internal predecessors, (76), 11 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) Word has length 162 [2022-11-18 21:07:45,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:45,474 INFO L225 Difference]: With dead ends: 706 [2022-11-18 21:07:45,474 INFO L226 Difference]: Without dead ends: 704 [2022-11-18 21:07:45,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-11-18 21:07:45,476 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 350 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 2030 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 2030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:45,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 634 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 2030 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 21:07:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-18 21:07:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 688. [2022-11-18 21:07:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 495 states have (on average 1.0909090909090908) internal successors, (540), 511 states have internal predecessors, (540), 135 states have call successors, (135), 46 states have call predecessors, (135), 57 states have return successors, (194), 130 states have call predecessors, (194), 134 states have call successors, (194) [2022-11-18 21:07:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 869 transitions. [2022-11-18 21:07:45,749 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 869 transitions. Word has length 162 [2022-11-18 21:07:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:45,749 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 869 transitions. [2022-11-18 21:07:45,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.470588235294118) internal successors, (76), 15 states have internal predecessors, (76), 11 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-18 21:07:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 869 transitions. [2022-11-18 21:07:45,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 21:07:45,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:45,752 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:45,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 21:07:45,753 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1499730589, now seen corresponding path program 1 times [2022-11-18 21:07:45,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:45,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035453231] [2022-11-18 21:07:45,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:45,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:07:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:07:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:07:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:07:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:07:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:07:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:07:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:07:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:07:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:07:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:07:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:07:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:07:46,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:07:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:07:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:07:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-18 21:07:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:46,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035453231] [2022-11-18 21:07:46,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035453231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:46,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:07:46,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:07:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429687355] [2022-11-18 21:07:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:07:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:46,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:07:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:07:46,749 INFO L87 Difference]: Start difference. First operand 688 states and 869 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:07:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:48,440 INFO L93 Difference]: Finished difference Result 720 states and 907 transitions. [2022-11-18 21:07:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:07:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 161 [2022-11-18 21:07:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:48,444 INFO L225 Difference]: With dead ends: 720 [2022-11-18 21:07:48,444 INFO L226 Difference]: Without dead ends: 718 [2022-11-18 21:07:48,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:07:48,446 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 105 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 995 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 21:07:48,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-18 21:07:48,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 709. [2022-11-18 21:07:48,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 508 states have (on average 1.0885826771653544) internal successors, (553), 526 states have internal predecessors, (553), 140 states have call successors, (140), 47 states have call predecessors, (140), 60 states have return successors, (201), 135 states have call predecessors, (201), 139 states have call successors, (201) [2022-11-18 21:07:48,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 894 transitions. [2022-11-18 21:07:48,794 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 894 transitions. Word has length 161 [2022-11-18 21:07:48,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:48,795 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 894 transitions. [2022-11-18 21:07:48,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-18 21:07:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 894 transitions. [2022-11-18 21:07:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 21:07:48,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:48,798 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:48,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 21:07:48,799 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:48,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:48,800 INFO L85 PathProgramCache]: Analyzing trace with hash -798666011, now seen corresponding path program 1 times [2022-11-18 21:07:48,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:48,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978282860] [2022-11-18 21:07:48,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:48,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:07:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:07:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:07:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:07:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:07:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:07:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:07:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:07:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:07:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:07:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:07:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:07:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:07:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:07:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:07:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:07:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 34 proven. 7 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-11-18 21:07:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:52,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978282860] [2022-11-18 21:07:52,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978282860] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:52,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963590435] [2022-11-18 21:07:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:52,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:52,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:52,974 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:52,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-18 21:07:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:53,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2855 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-18 21:07:53,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:53,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 21:07:54,463 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 21:07:54,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 21:07:54,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:07:55,924 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:07:55,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 21:08:08,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 27 [2022-11-18 21:09:05,647 WARN L859 $PredicateComparison]: unable to prove that (exists ((|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int) (v_ArrVal_3064 Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_3064)) |c_#memory_$Pointer$.base|) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2022-11-18 21:09:05,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 21:09:05,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 25 [2022-11-18 21:09:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 44 proven. 81 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-18 21:09:14,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:09:16,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963590435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:09:16,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:09:16,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 35] total 52 [2022-11-18 21:09:16,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546982477] [2022-11-18 21:09:16,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:09:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 21:09:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:09:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 21:09:16,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3687, Unknown=3, NotChecked=122, Total=4032 [2022-11-18 21:09:16,564 INFO L87 Difference]: Start difference. First operand 709 states and 894 transitions. Second operand has 52 states, 49 states have (on average 3.836734693877551) internal successors, (188), 45 states have internal predecessors, (188), 16 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-18 21:10:12,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:12,890 INFO L93 Difference]: Finished difference Result 1057 states and 1369 transitions. [2022-11-18 21:10:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-18 21:10:12,891 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 3.836734693877551) internal successors, (188), 45 states have internal predecessors, (188), 16 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) Word has length 161 [2022-11-18 21:10:12,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:12,896 INFO L225 Difference]: With dead ends: 1057 [2022-11-18 21:10:12,896 INFO L226 Difference]: Without dead ends: 894 [2022-11-18 21:10:12,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 171 SyntacticMatches, 24 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3718 ImplicationChecksByTransitivity, 129.7s TimeCoverageRelationStatistics Valid=708, Invalid=11266, Unknown=20, NotChecked=216, Total=12210 [2022-11-18 21:10:12,899 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 388 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 5555 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 9680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 5555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3830 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:12,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 3805 Invalid, 9680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 5555 Invalid, 0 Unknown, 3830 Unchecked, 6.8s Time] [2022-11-18 21:10:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-11-18 21:10:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 782. [2022-11-18 21:10:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 573 states have (on average 1.0907504363001745) internal successors, (625), 592 states have internal predecessors, (625), 142 states have call successors, (142), 52 states have call predecessors, (142), 66 states have return successors, (205), 137 states have call predecessors, (205), 141 states have call successors, (205) [2022-11-18 21:10:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 972 transitions. [2022-11-18 21:10:13,181 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 972 transitions. Word has length 161 [2022-11-18 21:10:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:13,182 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 972 transitions. [2022-11-18 21:10:13,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 3.836734693877551) internal successors, (188), 45 states have internal predecessors, (188), 16 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (36), 16 states have call predecessors, (36), 14 states have call successors, (36) [2022-11-18 21:10:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 972 transitions. [2022-11-18 21:10:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 21:10:13,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:13,185 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:13,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:13,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 21:10:13,398 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:13,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:13,399 INFO L85 PathProgramCache]: Analyzing trace with hash -904183063, now seen corresponding path program 1 times [2022-11-18 21:10:13,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774880406] [2022-11-18 21:10:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:10:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:10:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:17,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:10:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:10:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:10:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:10:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:10:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:10:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:10:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:10:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:10:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:10:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:10:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:10:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:10:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:10:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-18 21:10:18,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:18,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774880406] [2022-11-18 21:10:18,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774880406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:18,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:18,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-18 21:10:18,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245182972] [2022-11-18 21:10:18,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:18,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 21:10:18,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 21:10:18,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2022-11-18 21:10:18,758 INFO L87 Difference]: Start difference. First operand 782 states and 972 transitions. Second operand has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 20 states have internal predecessors, (79), 10 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-18 21:10:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:24,051 INFO L93 Difference]: Finished difference Result 845 states and 1072 transitions. [2022-11-18 21:10:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 21:10:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 20 states have internal predecessors, (79), 10 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) Word has length 161 [2022-11-18 21:10:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:24,057 INFO L225 Difference]: With dead ends: 845 [2022-11-18 21:10:24,057 INFO L226 Difference]: Without dead ends: 843 [2022-11-18 21:10:24,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 21:10:24,058 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 470 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 3624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:24,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 903 Invalid, 3624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-18 21:10:24,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-18 21:10:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 783. [2022-11-18 21:10:24,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 573 states have (on average 1.0907504363001745) internal successors, (625), 591 states have internal predecessors, (625), 143 states have call successors, (143), 53 states have call predecessors, (143), 66 states have return successors, (205), 138 states have call predecessors, (205), 142 states have call successors, (205) [2022-11-18 21:10:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 973 transitions. [2022-11-18 21:10:24,367 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 973 transitions. Word has length 161 [2022-11-18 21:10:24,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:24,368 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 973 transitions. [2022-11-18 21:10:24,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 20 states have internal predecessors, (79), 10 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2022-11-18 21:10:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 973 transitions. [2022-11-18 21:10:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-18 21:10:24,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:24,372 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:24,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 21:10:24,372 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:24,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash -751110128, now seen corresponding path program 1 times [2022-11-18 21:10:24,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:24,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587684789] [2022-11-18 21:10:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:10:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:10:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:10:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:10:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:10:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:10:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:10:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:10:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 21:10:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 21:10:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 21:10:25,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 21:10:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 21:10:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 21:10:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-18 21:10:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 21:10:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-18 21:10:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:25,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587684789] [2022-11-18 21:10:25,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587684789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:25,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946892351] [2022-11-18 21:10:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:25,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:25,408 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:25,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-18 21:10:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:26,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2809 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 21:10:26,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:26,336 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-18 21:10:26,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:10:26,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946892351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:26,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:10:26,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-11-18 21:10:26,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892738283] [2022-11-18 21:10:26,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:26,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:10:26,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:10:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:10:26,338 INFO L87 Difference]: Start difference. First operand 783 states and 973 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 21:10:26,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:26,836 INFO L93 Difference]: Finished difference Result 1192 states and 1507 transitions. [2022-11-18 21:10:26,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:10:26,836 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2022-11-18 21:10:26,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:26,839 INFO L225 Difference]: With dead ends: 1192 [2022-11-18 21:10:26,839 INFO L226 Difference]: Without dead ends: 783 [2022-11-18 21:10:26,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:10:26,840 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 12 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:26,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1548 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 21:10:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2022-11-18 21:10:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2022-11-18 21:10:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 573 states have (on average 1.0907504363001745) internal successors, (625), 591 states have internal predecessors, (625), 143 states have call successors, (143), 53 states have call predecessors, (143), 66 states have return successors, (202), 138 states have call predecessors, (202), 142 states have call successors, (202) [2022-11-18 21:10:27,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 970 transitions. [2022-11-18 21:10:27,110 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 970 transitions. Word has length 165 [2022-11-18 21:10:27,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:27,110 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 970 transitions. [2022-11-18 21:10:27,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-18 21:10:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 970 transitions. [2022-11-18 21:10:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-18 21:10:27,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:27,112 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:10:27,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-18 21:10:27,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 21:10:27,313 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -668167169, now seen corresponding path program 1 times [2022-11-18 21:10:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:27,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285759549] [2022-11-18 21:10:27,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:10:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:10:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:10:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:10:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:10:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:10:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:10:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:10:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:10:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:10:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:10:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:10:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:10:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:10:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:10:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:10:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 21:10:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-18 21:10:27,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:27,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285759549] [2022-11-18 21:10:27,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285759549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:10:27,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:10:27,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 21:10:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809156317] [2022-11-18 21:10:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:10:27,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 21:10:27,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 21:10:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:10:27,781 INFO L87 Difference]: Start difference. First operand 783 states and 970 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 21:10:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:29,040 INFO L93 Difference]: Finished difference Result 1030 states and 1264 transitions. [2022-11-18 21:10:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:10:29,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2022-11-18 21:10:29,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:29,044 INFO L225 Difference]: With dead ends: 1030 [2022-11-18 21:10:29,044 INFO L226 Difference]: Without dead ends: 729 [2022-11-18 21:10:29,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:10:29,046 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 77 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:29,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 719 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 21:10:29,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-11-18 21:10:29,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 720. [2022-11-18 21:10:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 533 states have (on average 1.0787992495309568) internal successors, (575), 552 states have internal predecessors, (575), 123 states have call successors, (123), 50 states have call predecessors, (123), 63 states have return successors, (172), 117 states have call predecessors, (172), 122 states have call successors, (172) [2022-11-18 21:10:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 870 transitions. [2022-11-18 21:10:29,346 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 870 transitions. Word has length 165 [2022-11-18 21:10:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:29,347 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 870 transitions. [2022-11-18 21:10:29,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 21:10:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 870 transitions. [2022-11-18 21:10:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-18 21:10:29,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:29,350 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:29,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 21:10:29,350 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:29,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:29,351 INFO L85 PathProgramCache]: Analyzing trace with hash -970592887, now seen corresponding path program 1 times [2022-11-18 21:10:29,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:29,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567940767] [2022-11-18 21:10:29,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:10:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:10:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:10:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:10:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:10:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:10:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:10:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:10:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 21:10:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 21:10:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 21:10:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-18 21:10:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-18 21:10:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-18 21:10:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-11-18 21:10:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 21:10:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-11-18 21:10:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567940767] [2022-11-18 21:10:32,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567940767] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484190653] [2022-11-18 21:10:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:32,974 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:32,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-18 21:10:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-18 21:10:33,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:34,997 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:10:34,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-18 21:10:35,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 21:10:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 83 proven. 40 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-18 21:10:37,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:10:38,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484190653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:38,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:10:38,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 33 [2022-11-18 21:10:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573461074] [2022-11-18 21:10:38,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:10:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 21:10:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:10:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 21:10:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1407, Unknown=1, NotChecked=0, Total=1560 [2022-11-18 21:10:38,567 INFO L87 Difference]: Start difference. First operand 720 states and 870 transitions. Second operand has 33 states, 32 states have (on average 5.28125) internal successors, (169), 30 states have internal predecessors, (169), 15 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 12 states have call predecessors, (32), 15 states have call successors, (32) [2022-11-18 21:10:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:10:46,918 INFO L93 Difference]: Finished difference Result 1159 states and 1465 transitions. [2022-11-18 21:10:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-18 21:10:46,919 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.28125) internal successors, (169), 30 states have internal predecessors, (169), 15 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 12 states have call predecessors, (32), 15 states have call successors, (32) Word has length 167 [2022-11-18 21:10:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:10:46,924 INFO L225 Difference]: With dead ends: 1159 [2022-11-18 21:10:46,924 INFO L226 Difference]: Without dead ends: 925 [2022-11-18 21:10:46,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 266 SyntacticMatches, 29 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1477 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=446, Invalid=3843, Unknown=1, NotChecked=0, Total=4290 [2022-11-18 21:10:46,926 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 271 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 4086 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:10:46,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2746 Invalid, 4968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4086 Invalid, 0 Unknown, 806 Unchecked, 5.6s Time] [2022-11-18 21:10:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-11-18 21:10:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 809. [2022-11-18 21:10:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 599 states have (on average 1.0801335559265441) internal successors, (647), 619 states have internal predecessors, (647), 138 states have call successors, (138), 58 states have call predecessors, (138), 71 states have return successors, (189), 131 states have call predecessors, (189), 137 states have call successors, (189) [2022-11-18 21:10:47,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 974 transitions. [2022-11-18 21:10:47,238 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 974 transitions. Word has length 167 [2022-11-18 21:10:47,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:10:47,239 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 974 transitions. [2022-11-18 21:10:47,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.28125) internal successors, (169), 30 states have internal predecessors, (169), 15 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (32), 12 states have call predecessors, (32), 15 states have call successors, (32) [2022-11-18 21:10:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 974 transitions. [2022-11-18 21:10:47,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-18 21:10:47,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:10:47,242 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:47,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-11-18 21:10:47,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 21:10:47,455 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:10:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:10:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1433532588, now seen corresponding path program 1 times [2022-11-18 21:10:47,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:10:47,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189463676] [2022-11-18 21:10:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:47,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:10:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:10:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:10:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 21:10:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 21:10:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 21:10:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:10:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 21:10:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:10:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 21:10:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:10:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-18 21:10:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 21:10:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-18 21:10:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 21:10:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 21:10:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 21:10:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 21:10:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-18 21:10:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-18 21:10:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:10:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189463676] [2022-11-18 21:10:50,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189463676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:10:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721806115] [2022-11-18 21:10:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:10:50,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:10:50,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:10:50,607 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:10:50,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-18 21:10:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:10:51,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-18 21:10:51,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:10:51,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:11:01,033 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 21:11:01,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-18 21:11:01,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-11-18 21:11:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 83 proven. 88 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 21:11:18,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:11:21,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721806115] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:11:21,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:11:21,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 40 [2022-11-18 21:11:21,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913781753] [2022-11-18 21:11:21,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:11:21,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 21:11:21,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:21,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 21:11:21,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2453, Unknown=4, NotChecked=0, Total=2652 [2022-11-18 21:11:21,203 INFO L87 Difference]: Start difference. First operand 809 states and 974 transitions. Second operand has 40 states, 38 states have (on average 4.973684210526316) internal successors, (189), 36 states have internal predecessors, (189), 20 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (37), 17 states have call predecessors, (37), 20 states have call successors, (37) [2022-11-18 21:11:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:42,043 INFO L93 Difference]: Finished difference Result 1312 states and 1657 transitions. [2022-11-18 21:11:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-18 21:11:42,044 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 4.973684210526316) internal successors, (189), 36 states have internal predecessors, (189), 20 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (37), 17 states have call predecessors, (37), 20 states have call successors, (37) Word has length 172 [2022-11-18 21:11:42,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:42,048 INFO L225 Difference]: With dead ends: 1312 [2022-11-18 21:11:42,048 INFO L226 Difference]: Without dead ends: 1041 [2022-11-18 21:11:42,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 280 SyntacticMatches, 26 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3541 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=842, Invalid=10709, Unknown=5, NotChecked=0, Total=11556 [2022-11-18 21:11:42,050 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 387 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 7737 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 10654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 7737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2631 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:42,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 3475 Invalid, 10654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [286 Valid, 7737 Invalid, 0 Unknown, 2631 Unchecked, 9.9s Time] [2022-11-18 21:11:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-18 21:11:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 851. [2022-11-18 21:11:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 640 states have (on average 1.0765625) internal successors, (689), 659 states have internal predecessors, (689), 134 states have call successors, (134), 64 states have call predecessors, (134), 76 states have return successors, (181), 127 states have call predecessors, (181), 133 states have call successors, (181) [2022-11-18 21:11:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1004 transitions. [2022-11-18 21:11:42,398 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1004 transitions. Word has length 172 [2022-11-18 21:11:42,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:42,398 INFO L495 AbstractCegarLoop]: Abstraction has 851 states and 1004 transitions. [2022-11-18 21:11:42,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 4.973684210526316) internal successors, (189), 36 states have internal predecessors, (189), 20 states have call successors, (38), 5 states have call predecessors, (38), 9 states have return successors, (37), 17 states have call predecessors, (37), 20 states have call successors, (37) [2022-11-18 21:11:42,399 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1004 transitions. [2022-11-18 21:11:42,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-18 21:11:42,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:42,402 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:42,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-18 21:11:42,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-11-18 21:11:42,615 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:42,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:42,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1212291125, now seen corresponding path program 1 times [2022-11-18 21:11:42,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:42,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366767166] [2022-11-18 21:11:42,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:42,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:11:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:11:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:11:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:11:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:11:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:11:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:11:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:11:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:11:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:11:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:11:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:11:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:44,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:11:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:11:45,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:11:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:11:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:11:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:11:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 21:11:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 21:11:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-18 21:11:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:11:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-18 21:11:45,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:11:45,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366767166] [2022-11-18 21:11:45,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366767166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:11:45,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:11:45,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-18 21:11:45,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956464326] [2022-11-18 21:11:45,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:11:45,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 21:11:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:11:45,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 21:11:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-18 21:11:45,167 INFO L87 Difference]: Start difference. First operand 851 states and 1004 transitions. Second operand has 18 states, 16 states have (on average 5.875) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-18 21:11:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:11:48,248 INFO L93 Difference]: Finished difference Result 1107 states and 1332 transitions. [2022-11-18 21:11:48,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:11:48,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 170 [2022-11-18 21:11:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:11:48,252 INFO L225 Difference]: With dead ends: 1107 [2022-11-18 21:11:48,253 INFO L226 Difference]: Without dead ends: 930 [2022-11-18 21:11:48,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:11:48,254 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 463 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:11:48,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 802 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 21:11:48,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-18 21:11:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 906. [2022-11-18 21:11:48,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 682 states have (on average 1.0806451612903225) internal successors, (737), 702 states have internal predecessors, (737), 143 states have call successors, (143), 67 states have call predecessors, (143), 80 states have return successors, (192), 136 states have call predecessors, (192), 142 states have call successors, (192) [2022-11-18 21:11:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1072 transitions. [2022-11-18 21:11:48,527 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1072 transitions. Word has length 170 [2022-11-18 21:11:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:11:48,528 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1072 transitions. [2022-11-18 21:11:48,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.875) internal successors, (94), 14 states have internal predecessors, (94), 7 states have call successors, (23), 6 states have call predecessors, (23), 3 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-18 21:11:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1072 transitions. [2022-11-18 21:11:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-18 21:11:48,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:11:48,531 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:11:48,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 21:11:48,532 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:11:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:11:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 358608049, now seen corresponding path program 1 times [2022-11-18 21:11:48,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:11:48,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804043920] [2022-11-18 21:11:48,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:11:48,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:11:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:12:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:12:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:12:06,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:12:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 21:12:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:12:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:12:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:12:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:12:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 21:12:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:12:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-18 21:12:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:12:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 21:12:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-18 21:12:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 21:12:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:12:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-18 21:12:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-18 21:12:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-18 21:12:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-18 21:12:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 39 proven. 21 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-18 21:12:07,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:12:07,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804043920] [2022-11-18 21:12:07,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804043920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:12:07,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583991960] [2022-11-18 21:12:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:07,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:12:07,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:12:07,929 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:12:07,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-18 21:12:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:12:08,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-18 21:12:08,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:12:08,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 21:12:09,880 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 21:12:09,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 21:12:09,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 21:12:09,985 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 21:12:10,812 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 21:12:10,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 21:12:12,178 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:12:12,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2022-11-18 21:12:12,193 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 21:12:12,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34 [2022-11-18 21:12:17,540 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 21:12:17,541 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 10 [2022-11-18 21:12:17,550 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 21:12:17,551 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 37 treesize of output 13 [2022-11-18 21:12:17,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 21:12:17,914 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 69 treesize of output 41 [2022-11-18 21:12:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 33 proven. 105 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-18 21:12:18,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:12:18,592 INFO L321 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2022-11-18 21:12:18,593 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 95 treesize of output 94 [2022-11-18 21:12:19,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583991960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:12:19,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 21:12:19,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 29] total 63 [2022-11-18 21:12:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125674252] [2022-11-18 21:12:19,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 21:12:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 21:12:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:12:19,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 21:12:19,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4728, Unknown=0, NotChecked=0, Total=4970 [2022-11-18 21:12:19,845 INFO L87 Difference]: Start difference. First operand 906 states and 1072 transitions. Second operand has 63 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 52 states have internal predecessors, (196), 28 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (42), 25 states have call predecessors, (42), 25 states have call successors, (42) [2022-11-18 21:12:33,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:12:33,451 INFO L93 Difference]: Finished difference Result 1051 states and 1231 transitions. [2022-11-18 21:12:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 21:12:33,452 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 52 states have internal predecessors, (196), 28 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (42), 25 states have call predecessors, (42), 25 states have call successors, (42) Word has length 170 [2022-11-18 21:12:33,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:12:33,456 INFO L225 Difference]: With dead ends: 1051 [2022-11-18 21:12:33,456 INFO L226 Difference]: Without dead ends: 1049 [2022-11-18 21:12:33,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 202 SyntacticMatches, 24 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5473 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=1008, Invalid=15762, Unknown=0, NotChecked=0, Total=16770 [2022-11-18 21:12:33,460 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 340 mSDsluCounter, 2588 mSDsCounter, 0 mSdLazyCounter, 3204 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 667 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:12:33,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 2711 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 3204 Invalid, 0 Unknown, 667 Unchecked, 4.5s Time] [2022-11-18 21:12:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-11-18 21:12:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1034. [2022-11-18 21:12:33,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 777 states have (on average 1.0733590733590734) internal successors, (834), 797 states have internal predecessors, (834), 164 states have call successors, (164), 79 states have call predecessors, (164), 92 states have return successors, (215), 157 states have call predecessors, (215), 163 states have call successors, (215) [2022-11-18 21:12:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1213 transitions. [2022-11-18 21:12:33,772 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1213 transitions. Word has length 170 [2022-11-18 21:12:33,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:12:33,772 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1213 transitions. [2022-11-18 21:12:33,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 54 states have (on average 3.6296296296296298) internal successors, (196), 52 states have internal predecessors, (196), 28 states have call successors, (45), 12 states have call predecessors, (45), 12 states have return successors, (42), 25 states have call predecessors, (42), 25 states have call successors, (42) [2022-11-18 21:12:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1213 transitions. [2022-11-18 21:12:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-18 21:12:33,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:12:33,775 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:33,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-18 21:12:33,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54e6686-3b8b-49e1-8468-4b439f3a0890/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-18 21:12:33,976 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:12:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:12:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1231708654, now seen corresponding path program 1 times [2022-11-18 21:12:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:12:33,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790743141] [2022-11-18 21:12:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:12:33,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:12:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat