./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8 --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 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 --- 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-2329fc7 [2022-12-13 18:51:06,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:51:06,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:51:06,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:51:06,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:51:06,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:51:06,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:51:06,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:51:06,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:51:06,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:51:06,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:51:06,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:51:06,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:51:06,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:51:06,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:51:06,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:51:06,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:51:06,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:51:06,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:51:06,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:51:06,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:51:06,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:51:06,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:51:06,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:51:06,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:51:06,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:51:06,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:51:06,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:51:06,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:51:06,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:51:06,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:51:06,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:51:06,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:51:06,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:51:06,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:51:06,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:51:06,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:51:06,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:51:06,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:51:06,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:51:06,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:51:06,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 18:51:06,963 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:51:06,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:51:06,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:51:06,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:51:06,964 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:51:06,965 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:51:06,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:51:06,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:51:06,965 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:51:06,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:51:06,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:51:06,967 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:51:06,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:51:06,967 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:51:06,968 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618de5120235c3340e11b4958ef07a29ea7e443f67840fe760124caab804e862 [2022-12-13 18:51:07,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:51:07,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:51:07,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:51:07,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:51:07,179 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:51:07,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-12-13 18:51:09,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:51:09,970 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:51:09,971 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i [2022-12-13 18:51:09,989 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/data/c21eb2d54/0aafd4623d484539914c83e6c84e5d2f/FLAGcebe5531f [2022-12-13 18:51:10,239 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/data/c21eb2d54/0aafd4623d484539914c83e6c84e5d2f [2022-12-13 18:51:10,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:51:10,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:51:10,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:51:10,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:51:10,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:51:10,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:10" (1/1) ... [2022-12-13 18:51:10,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2e3bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:10, skipping insertion in model container [2022-12-13 18:51:10,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:51:10" (1/1) ... [2022-12-13 18:51:10,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:51:10,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:51:10,554 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-12-13 18:51:10,563 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-12-13 18:51:11,287 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,287 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,288 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,289 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,298 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,299 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,300 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,301 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,367 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,368 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,368 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,371 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 18:51:11,373 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 18:51:11,373 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 18:51:11,602 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 18:51:11,603 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 18:51:11,604 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 18:51:11,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 18:51:11,605 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 18:51:11,606 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 18:51:11,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 18:51:11,607 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 18:51:11,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 18:51:11,608 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 18:51:11,609 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 18:51:11,732 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 18:51:11,756 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 18:51:11,763 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:11,783 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:11,788 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,789 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,827 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 18:51:11,831 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:11,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:51:11,869 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:51:11,878 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4500,4513] [2022-12-13 18:51:11,878 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness.i[4560,4573] [2022-12-13 18:51:11,914 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,914 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,914 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,915 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,915 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,921 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,921 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,922 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,922 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:11,929 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,929 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,930 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 18:51:11,932 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 18:51:11,934 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 18:51:11,934 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 18:51:11,951 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 18:51:11,952 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 18:51:11,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 18:51:11,953 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 18:51:11,954 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 18:51:11,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 18:51:11,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 18:51:11,955 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 18:51:11,956 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 18:51:11,956 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 18:51:11,957 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 18:51:11,975 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 18:51:11,994 WARN L623 FunctionHandler]: Unknown extern function memchr [2022-12-13 18:51:11,999 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:12,015 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:12,021 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:12,021 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 18:51:12,045 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 18:51:12,048 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 18:51:12,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:51:12,276 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:51:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12 WrapperNode [2022-12-13 18:51:12,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:51:12,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:51:12,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:51:12,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:51:12,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,415 INFO L138 Inliner]: procedures = 690, calls = 2739, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 830 [2022-12-13 18:51:12,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:51:12,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:51:12,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:51:12,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:51:12,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,460 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:51:12,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:51:12,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:51:12,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:51:12,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (1/1) ... [2022-12-13 18:51:12,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:51:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:12,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:51:12,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:51:12,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-12-13 18:51:12,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-12-13 18:51:12,530 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-12-13 18:51:12,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-12-13 18:51:12,530 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-12-13 18:51:12,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 18:51:12,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 18:51:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:51:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 18:51:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-12-13 18:51:12,531 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-12-13 18:51:12,531 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-12-13 18:51:12,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-12-13 18:51:12,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-12-13 18:51:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 18:51:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 18:51:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:51:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-12-13 18:51:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2022-12-13 18:51:12,533 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2022-12-13 18:51:12,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:51:12,733 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:51:12,734 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:51:12,875 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2022-12-13 18:51:13,624 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:51:13,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:51:13,632 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 18:51:13,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:13 BoogieIcfgContainer [2022-12-13 18:51:13,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:51:13,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:51:13,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:51:13,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:51:13,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:51:10" (1/3) ... [2022-12-13 18:51:13,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29fc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:13, skipping insertion in model container [2022-12-13 18:51:13,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:51:12" (2/3) ... [2022-12-13 18:51:13,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f29fc24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:51:13, skipping insertion in model container [2022-12-13 18:51:13,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:13" (3/3) ... [2022-12-13 18:51:13,642 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness.i [2022-12-13 18:51:13,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:51:13,660 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:51:13,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:51:13,710 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;@7a41c607, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:51:13,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:51:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-13 18:51:13,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:51:13,721 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:13,722 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:13,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:13,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:13,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1670706302, now seen corresponding path program 1 times [2022-12-13 18:51:13,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155641486] [2022-12-13 18:51:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:13,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:51:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:51:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:14,289 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:14,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:14,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155641486] [2022-12-13 18:51:14,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155641486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:14,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:14,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:51:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577597499] [2022-12-13 18:51:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:51:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:14,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:51:14,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:51:14,318 INFO L87 Difference]: Start difference. First operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 18:51:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:14,831 INFO L93 Difference]: Finished difference Result 317 states and 419 transitions. [2022-12-13 18:51:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:51:14,834 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2022-12-13 18:51:14,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:14,840 INFO L225 Difference]: With dead ends: 317 [2022-12-13 18:51:14,841 INFO L226 Difference]: Without dead ends: 164 [2022-12-13 18:51:14,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:51:14,846 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:14,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 212 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:51:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-13 18:51:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 147. [2022-12-13 18:51:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-13 18:51:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 183 transitions. [2022-12-13 18:51:14,882 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 183 transitions. Word has length 80 [2022-12-13 18:51:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:14,883 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 183 transitions. [2022-12-13 18:51:14,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 18:51:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 183 transitions. [2022-12-13 18:51:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:51:14,885 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:14,885 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:51:14,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2065694084, now seen corresponding path program 1 times [2022-12-13 18:51:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:14,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141698043] [2022-12-13 18:51:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:51:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:51:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:15,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141698043] [2022-12-13 18:51:15,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141698043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:15,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:15,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:51:15,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76609883] [2022-12-13 18:51:15,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:15,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:51:15,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:15,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:51:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:51:15,825 INFO L87 Difference]: Start difference. First operand 147 states and 183 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 18:51:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:16,830 INFO L93 Difference]: Finished difference Result 240 states and 305 transitions. [2022-12-13 18:51:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:51:16,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2022-12-13 18:51:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:16,832 INFO L225 Difference]: With dead ends: 240 [2022-12-13 18:51:16,832 INFO L226 Difference]: Without dead ends: 193 [2022-12-13 18:51:16,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:51:16,834 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 81 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:16,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 751 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:51:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-12-13 18:51:16,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 152. [2022-12-13 18:51:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 96 states have internal predecessors, (110), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-12-13 18:51:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2022-12-13 18:51:16,847 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 80 [2022-12-13 18:51:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:16,847 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2022-12-13 18:51:16,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 3 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-12-13 18:51:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2022-12-13 18:51:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 18:51:16,849 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:16,849 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:16,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:51:16,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1742615278, now seen corresponding path program 1 times [2022-12-13 18:51:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:16,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200474930] [2022-12-13 18:51:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:51:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:51:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 18:51:17,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:17,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200474930] [2022-12-13 18:51:17,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200474930] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:17,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757553690] [2022-12-13 18:51:17,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:17,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:17,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:17,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:17,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:51:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:18,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2632 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 18:51:18,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:18,283 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 25 treesize of output 17 [2022-12-13 18:51:18,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-13 18:51:18,384 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:18,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:18,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757553690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:18,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:18,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 13 [2022-12-13 18:51:18,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214186152] [2022-12-13 18:51:18,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:18,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:51:18,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:18,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:51:18,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:51:18,387 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 18:51:18,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:18,628 INFO L93 Difference]: Finished difference Result 224 states and 286 transitions. [2022-12-13 18:51:18,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:51:18,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 86 [2022-12-13 18:51:18,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:18,631 INFO L225 Difference]: With dead ends: 224 [2022-12-13 18:51:18,632 INFO L226 Difference]: Without dead ends: 182 [2022-12-13 18:51:18,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-12-13 18:51:18,633 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 18 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:18,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1131 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:51:18,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-13 18:51:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 160. [2022-12-13 18:51:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 102 states have internal predecessors, (114), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-12-13 18:51:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2022-12-13 18:51:18,654 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 86 [2022-12-13 18:51:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:18,655 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2022-12-13 18:51:18,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 18:51:18,655 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2022-12-13 18:51:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 18:51:18,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:18,658 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:18,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:51:18,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:18,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1024935907, now seen corresponding path program 1 times [2022-12-13 18:51:18,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:18,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310875163] [2022-12-13 18:51:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:51:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:51:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:19,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310875163] [2022-12-13 18:51:19,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310875163] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:19,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:19,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:51:19,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768816257] [2022-12-13 18:51:19,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:19,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:51:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:19,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:51:19,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:51:19,428 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 18:51:20,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:20,526 INFO L93 Difference]: Finished difference Result 260 states and 336 transitions. [2022-12-13 18:51:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:51:20,527 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 91 [2022-12-13 18:51:20,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:20,528 INFO L225 Difference]: With dead ends: 260 [2022-12-13 18:51:20,528 INFO L226 Difference]: Without dead ends: 212 [2022-12-13 18:51:20,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:51:20,529 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 363 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:20,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 732 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 18:51:20,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-12-13 18:51:20,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 155. [2022-12-13 18:51:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 96 states have (on average 1.15625) internal successors, (111), 98 states have internal predecessors, (111), 41 states have call successors, (41), 16 states have call predecessors, (41), 17 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-12-13 18:51:20,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2022-12-13 18:51:20,543 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 91 [2022-12-13 18:51:20,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:20,543 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2022-12-13 18:51:20,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-12-13 18:51:20,543 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2022-12-13 18:51:20,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:51:20,544 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:20,544 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:51:20,545 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:20,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:20,545 INFO L85 PathProgramCache]: Analyzing trace with hash -305918410, now seen corresponding path program 1 times [2022-12-13 18:51:20,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:20,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006570651] [2022-12-13 18:51:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:20,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:20,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:51:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:51:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:51:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:21,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:21,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006570651] [2022-12-13 18:51:21,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006570651] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:21,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:21,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:51:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575572296] [2022-12-13 18:51:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:21,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:51:21,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:21,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:51:21,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:51:21,108 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:51:22,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:22,004 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2022-12-13 18:51:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:51:22,005 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2022-12-13 18:51:22,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:22,007 INFO L225 Difference]: With dead ends: 242 [2022-12-13 18:51:22,007 INFO L226 Difference]: Without dead ends: 202 [2022-12-13 18:51:22,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:51:22,008 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 150 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:22,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 617 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 18:51:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-13 18:51:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 162. [2022-12-13 18:51:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 103 states have internal predecessors, (116), 41 states have call successors, (41), 16 states have call predecessors, (41), 19 states have return successors, (42), 42 states have call predecessors, (42), 39 states have call successors, (42) [2022-12-13 18:51:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2022-12-13 18:51:22,020 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 95 [2022-12-13 18:51:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:22,020 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2022-12-13 18:51:22,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 18:51:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2022-12-13 18:51:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:51:22,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:22,021 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 18:51:22,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:51:22,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1965360267, now seen corresponding path program 1 times [2022-12-13 18:51:22,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:22,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611258380] [2022-12-13 18:51:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:22,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:51:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:51:23,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:51:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 18:51:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 18:51:23,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611258380] [2022-12-13 18:51:23,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611258380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614597273] [2022-12-13 18:51:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:23,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:23,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:51:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:24,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-13 18:51:24,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:24,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 18:51:26,757 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-12-13 18:51:26,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 187 treesize of output 171 [2022-12-13 18:51:27,044 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 18:51:27,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:51:36,116 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 53 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 18:51:36,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614597273] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:36,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:51:36,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 30] total 43 [2022-12-13 18:51:36,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906532229] [2022-12-13 18:51:36,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:51:36,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 18:51:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 18:51:36,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2502, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 18:51:36,404 INFO L87 Difference]: Start difference. First operand 162 states and 199 transitions. Second operand has 43 states, 38 states have (on average 2.736842105263158) internal successors, (104), 33 states have internal predecessors, (104), 13 states have call successors, (30), 8 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) [2022-12-13 18:51:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:43,575 INFO L93 Difference]: Finished difference Result 395 states and 494 transitions. [2022-12-13 18:51:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 18:51:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 38 states have (on average 2.736842105263158) internal successors, (104), 33 states have internal predecessors, (104), 13 states have call successors, (30), 8 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) Word has length 103 [2022-12-13 18:51:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:43,577 INFO L225 Difference]: With dead ends: 395 [2022-12-13 18:51:43,577 INFO L226 Difference]: Without dead ends: 242 [2022-12-13 18:51:43,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=648, Invalid=7719, Unknown=5, NotChecked=0, Total=8372 [2022-12-13 18:51:43,579 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 344 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 4701 mSolverCounterSat, 226 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 4701 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:43,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 2145 Invalid, 4936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 4701 Invalid, 9 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 18:51:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-12-13 18:51:43,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2022-12-13 18:51:43,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 125 states have (on average 1.136) internal successors, (142), 128 states have internal predecessors, (142), 46 states have call successors, (46), 18 states have call predecessors, (46), 23 states have return successors, (54), 48 states have call predecessors, (54), 43 states have call successors, (54) [2022-12-13 18:51:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 242 transitions. [2022-12-13 18:51:43,596 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 242 transitions. Word has length 103 [2022-12-13 18:51:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:43,596 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 242 transitions. [2022-12-13 18:51:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 38 states have (on average 2.736842105263158) internal successors, (104), 33 states have internal predecessors, (104), 13 states have call successors, (30), 8 states have call predecessors, (30), 9 states have return successors, (28), 13 states have call predecessors, (28), 12 states have call successors, (28) [2022-12-13 18:51:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 242 transitions. [2022-12-13 18:51:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 18:51:43,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:43,598 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 18:51:43,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:51:43,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 18:51:43,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:43,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1624983934, now seen corresponding path program 1 times [2022-12-13 18:51:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:43,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546530076] [2022-12-13 18:51:43,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:51:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:51:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:51:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:51:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 18:51:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:44,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546530076] [2022-12-13 18:51:44,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546530076] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:44,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:44,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-12-13 18:51:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574178505] [2022-12-13 18:51:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:51:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:44,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:51:44,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:51:44,420 INFO L87 Difference]: Start difference. First operand 195 states and 242 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 18:51:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:45,893 INFO L93 Difference]: Finished difference Result 253 states and 319 transitions. [2022-12-13 18:51:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:51:45,894 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) Word has length 108 [2022-12-13 18:51:45,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:45,895 INFO L225 Difference]: With dead ends: 253 [2022-12-13 18:51:45,895 INFO L226 Difference]: Without dead ends: 238 [2022-12-13 18:51:45,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-12-13 18:51:45,896 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 259 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:45,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 928 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 18:51:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-13 18:51:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 200. [2022-12-13 18:51:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.1317829457364341) internal successors, (146), 133 states have internal predecessors, (146), 46 states have call successors, (46), 18 states have call predecessors, (46), 24 states have return successors, (57), 48 states have call predecessors, (57), 43 states have call successors, (57) [2022-12-13 18:51:45,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 249 transitions. [2022-12-13 18:51:45,912 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 249 transitions. Word has length 108 [2022-12-13 18:51:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:45,912 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 249 transitions. [2022-12-13 18:51:45,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 12 states have internal predecessors, (63), 4 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 3 states have call successors, (16) [2022-12-13 18:51:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 249 transitions. [2022-12-13 18:51:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 18:51:45,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:45,913 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-12-13 18:51:45,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:51:45,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:45,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1145937350, now seen corresponding path program 2 times [2022-12-13 18:51:45,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:45,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4997414] [2022-12-13 18:51:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:45,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:51:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:51:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:51:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:51:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 18:51:46,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:46,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4997414] [2022-12-13 18:51:46,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4997414] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:46,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623257762] [2022-12-13 18:51:46,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:51:46,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:46,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:46,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:46,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:51:46,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 18:51:46,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:51:46,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 18:51:47,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 18:51:47,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:47,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623257762] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:47,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:47,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 31 [2022-12-13 18:51:47,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646899791] [2022-12-13 18:51:47,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:47,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:51:47,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:51:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=865, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:51:47,223 INFO L87 Difference]: Start difference. First operand 200 states and 249 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-12-13 18:51:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:47,479 INFO L93 Difference]: Finished difference Result 278 states and 346 transitions. [2022-12-13 18:51:47,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:51:47,480 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 108 [2022-12-13 18:51:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:47,481 INFO L225 Difference]: With dead ends: 278 [2022-12-13 18:51:47,481 INFO L226 Difference]: Without dead ends: 189 [2022-12-13 18:51:47,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 18:51:47,482 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 111 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:47,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 2200 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:51:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-13 18:51:47,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2022-12-13 18:51:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.1327433628318584) internal successors, (128), 115 states have internal predecessors, (128), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (46), 44 states have call predecessors, (46), 40 states have call successors, (46) [2022-12-13 18:51:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2022-12-13 18:51:47,494 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 108 [2022-12-13 18:51:47,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:47,494 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2022-12-13 18:51:47,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 14 states have internal predecessors, (63), 6 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2022-12-13 18:51:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2022-12-13 18:51:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 18:51:47,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:47,496 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:47,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:51:47,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 18:51:47,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 787159086, now seen corresponding path program 1 times [2022-12-13 18:51:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:47,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570244061] [2022-12-13 18:51:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:47,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:47,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:48,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:51:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 18:51:48,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:51:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:48,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:51:48,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 18:51:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:51:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 18:51:48,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:48,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570244061] [2022-12-13 18:51:48,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570244061] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:48,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887419658] [2022-12-13 18:51:48,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:48,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:48,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:48,134 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:48,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:51:48,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:48,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2830 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 18:51:48,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:51:48,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:48,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887419658] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:48,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:48,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-12-13 18:51:48,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874115501] [2022-12-13 18:51:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:48,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:51:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:51:48,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:51:48,540 INFO L87 Difference]: Start difference. First operand 176 states and 216 transitions. Second operand has 9 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 18:51:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:48,843 INFO L93 Difference]: Finished difference Result 328 states and 402 transitions. [2022-12-13 18:51:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:51:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 132 [2022-12-13 18:51:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:48,845 INFO L225 Difference]: With dead ends: 328 [2022-12-13 18:51:48,845 INFO L226 Difference]: Without dead ends: 219 [2022-12-13 18:51:48,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:51:48,846 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 184 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:48,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1264 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:51:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-12-13 18:51:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 191. [2022-12-13 18:51:48,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1229508196721312) internal successors, (137), 125 states have internal predecessors, (137), 46 states have call successors, (46), 17 states have call predecessors, (46), 22 states have return successors, (53), 48 states have call predecessors, (53), 44 states have call successors, (53) [2022-12-13 18:51:48,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 236 transitions. [2022-12-13 18:51:48,861 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 236 transitions. Word has length 132 [2022-12-13 18:51:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:48,862 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 236 transitions. [2022-12-13 18:51:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.25) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 18:51:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 236 transitions. [2022-12-13 18:51:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 18:51:48,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:48,863 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:48,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:51:49,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:49,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:49,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1467028945, now seen corresponding path program 1 times [2022-12-13 18:51:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857020004] [2022-12-13 18:51:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 18:51:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:51:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 18:51:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:51:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:51:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 18:51:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:51:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 18:51:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:49,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857020004] [2022-12-13 18:51:49,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857020004] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:49,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:49,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:51:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599305916] [2022-12-13 18:51:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:49,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:51:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:51:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:51:49,598 INFO L87 Difference]: Start difference. First operand 191 states and 236 transitions. Second operand has 11 states, 10 states have (on average 6.7) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 18:51:50,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:50,681 INFO L93 Difference]: Finished difference Result 345 states and 424 transitions. [2022-12-13 18:51:50,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:51:50,681 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 132 [2022-12-13 18:51:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:50,683 INFO L225 Difference]: With dead ends: 345 [2022-12-13 18:51:50,683 INFO L226 Difference]: Without dead ends: 236 [2022-12-13 18:51:50,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:51:50,684 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 227 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:50,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 601 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 18:51:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-13 18:51:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 176. [2022-12-13 18:51:50,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 113 states have (on average 1.1238938053097345) internal successors, (127), 115 states have internal predecessors, (127), 42 states have call successors, (42), 16 states have call predecessors, (42), 20 states have return successors, (46), 44 states have call predecessors, (46), 40 states have call successors, (46) [2022-12-13 18:51:50,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 215 transitions. [2022-12-13 18:51:50,698 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 215 transitions. Word has length 132 [2022-12-13 18:51:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:50,698 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 215 transitions. [2022-12-13 18:51:50,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.7) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-12-13 18:51:50,699 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 215 transitions. [2022-12-13 18:51:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:50,700 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:50,700 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:50,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:51:50,700 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -27146884, now seen corresponding path program 1 times [2022-12-13 18:51:50,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:50,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495852148] [2022-12-13 18:51:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:50,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 18:51:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:51,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:51:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:51:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,398 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 18:51:51,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495852148] [2022-12-13 18:51:51,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495852148] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:51,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319139228] [2022-12-13 18:51:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:51,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:51:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:51,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:51:51,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:51:51,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:51,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319139228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:51,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:51,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 29 [2022-12-13 18:51:51,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631738451] [2022-12-13 18:51:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:51,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 18:51:51,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 18:51:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-12-13 18:51:51,872 INFO L87 Difference]: Start difference. First operand 176 states and 215 transitions. Second operand has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 13 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 18:51:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:52,200 INFO L93 Difference]: Finished difference Result 289 states and 344 transitions. [2022-12-13 18:51:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:51:52,200 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 13 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2022-12-13 18:51:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:52,202 INFO L225 Difference]: With dead ends: 289 [2022-12-13 18:51:52,202 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 18:51:52,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=1210, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 18:51:52,204 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 117 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:52,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1921 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:51:52,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 18:51:52,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-12-13 18:51:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 118 states have internal predecessors, (129), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (48), 44 states have call predecessors, (48), 40 states have call successors, (48) [2022-12-13 18:51:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 219 transitions. [2022-12-13 18:51:52,219 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 219 transitions. Word has length 147 [2022-12-13 18:51:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:52,219 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 219 transitions. [2022-12-13 18:51:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 13 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 18:51:52,220 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 219 transitions. [2022-12-13 18:51:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:52,220 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:52,221 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:52,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:51:52,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:52,422 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 503614972, now seen corresponding path program 1 times [2022-12-13 18:51:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:52,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760726465] [2022-12-13 18:51:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 18:51:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:51:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:51:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 18:51:53,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:53,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760726465] [2022-12-13 18:51:53,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760726465] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:53,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420147760] [2022-12-13 18:51:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:53,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:53,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:53,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:51:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:53,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 18:51:53,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 18:51:53,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:53,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420147760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:53,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:53,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [18] total 18 [2022-12-13 18:51:53,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967400895] [2022-12-13 18:51:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:53,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:51:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:53,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:51:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:51:53,407 INFO L87 Difference]: Start difference. First operand 179 states and 219 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 18:51:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:53,438 INFO L93 Difference]: Finished difference Result 320 states and 391 transitions. [2022-12-13 18:51:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:51:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-12-13 18:51:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:53,439 INFO L225 Difference]: With dead ends: 320 [2022-12-13 18:51:53,439 INFO L226 Difference]: Without dead ends: 179 [2022-12-13 18:51:53,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:51:53,440 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 2 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 534 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 [2022-12-13 18:51:53,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 534 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:51:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-12-13 18:51:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-12-13 18:51:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 118 states have internal predecessors, (128), 42 states have call successors, (42), 16 states have call predecessors, (42), 21 states have return successors, (48), 44 states have call predecessors, (48), 40 states have call successors, (48) [2022-12-13 18:51:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 218 transitions. [2022-12-13 18:51:53,454 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 218 transitions. Word has length 147 [2022-12-13 18:51:53,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:53,454 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 218 transitions. [2022-12-13 18:51:53,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 18:51:53,454 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 218 transitions. [2022-12-13 18:51:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:53,455 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:53,455 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:53,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:51:53,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 18:51:53,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:53,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1893855558, now seen corresponding path program 1 times [2022-12-13 18:51:53,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:53,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981683828] [2022-12-13 18:51:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:53,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:53,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 18:51:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:51:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:51:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 18:51:54,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:54,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981683828] [2022-12-13 18:51:54,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981683828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073259174] [2022-12-13 18:51:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:54,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:54,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:54,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:54,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:51:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:54,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:51:54,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:51:54,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:54,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073259174] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:54,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:54,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-12-13 18:51:54,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611569523] [2022-12-13 18:51:54,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:54,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:51:54,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:51:54,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:51:54,583 INFO L87 Difference]: Start difference. First operand 179 states and 218 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 18:51:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:54,622 INFO L93 Difference]: Finished difference Result 285 states and 344 transitions. [2022-12-13 18:51:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:51:54,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-12-13 18:51:54,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:54,624 INFO L225 Difference]: With dead ends: 285 [2022-12-13 18:51:54,624 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 18:51:54,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:51:54,625 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:54,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1076 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:51:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 18:51:54,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-12-13 18:51:54,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 111 states have internal predecessors, (120), 40 states have call successors, (40), 16 states have call predecessors, (40), 20 states have return successors, (45), 41 states have call predecessors, (45), 38 states have call successors, (45) [2022-12-13 18:51:54,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 205 transitions. [2022-12-13 18:51:54,638 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 205 transitions. Word has length 147 [2022-12-13 18:51:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:54,638 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 205 transitions. [2022-12-13 18:51:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 4 states have call predecessors, (22), 2 states have call successors, (22) [2022-12-13 18:51:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 205 transitions. [2022-12-13 18:51:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 18:51:54,639 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:54,639 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-12-13 18:51:54,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 18:51:54,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 18:51:54,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:54,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1796968396, now seen corresponding path program 1 times [2022-12-13 18:51:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:54,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255095022] [2022-12-13 18:51:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:54,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:51:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 18:51:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 18:51:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 18:51:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:55,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255095022] [2022-12-13 18:51:55,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255095022] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:55,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:55,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:51:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230085929] [2022-12-13 18:51:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:51:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:51:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:51:55,286 INFO L87 Difference]: Start difference. First operand 169 states and 205 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:51:56,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:56,129 INFO L93 Difference]: Finished difference Result 263 states and 320 transitions. [2022-12-13 18:51:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:51:56,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2022-12-13 18:51:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:56,130 INFO L225 Difference]: With dead ends: 263 [2022-12-13 18:51:56,130 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 18:51:56,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:51:56,131 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 93 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:56,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 508 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:51:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 18:51:56,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 174. [2022-12-13 18:51:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 115 states have internal predecessors, (124), 40 states have call successors, (40), 16 states have call predecessors, (40), 21 states have return successors, (46), 42 states have call predecessors, (46), 38 states have call successors, (46) [2022-12-13 18:51:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 210 transitions. [2022-12-13 18:51:56,145 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 210 transitions. Word has length 141 [2022-12-13 18:51:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:56,145 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 210 transitions. [2022-12-13 18:51:56,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (24), 6 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 18:51:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 210 transitions. [2022-12-13 18:51:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:56,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:56,146 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:51:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:51:56,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:56,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -866872809, now seen corresponding path program 1 times [2022-12-13 18:51:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:56,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567060120] [2022-12-13 18:51:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:51:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:51:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:51:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:51:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 18:51:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567060120] [2022-12-13 18:51:56,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567060120] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:51:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075113279] [2022-12-13 18:51:56,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:56,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:51:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:51:56,708 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:51:56,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:51:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:51:57,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:51:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-12-13 18:51:57,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:51:57,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075113279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:57,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:51:57,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 18 [2022-12-13 18:51:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94092089] [2022-12-13 18:51:57,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:51:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:51:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:51:57,139 INFO L87 Difference]: Start difference. First operand 174 states and 210 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 11 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 18:51:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:57,317 INFO L93 Difference]: Finished difference Result 278 states and 323 transitions. [2022-12-13 18:51:57,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:51:57,317 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 11 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2022-12-13 18:51:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:57,319 INFO L225 Difference]: With dead ends: 278 [2022-12-13 18:51:57,319 INFO L226 Difference]: Without dead ends: 170 [2022-12-13 18:51:57,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-12-13 18:51:57,320 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 104 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:57,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1644 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:51:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-13 18:51:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2022-12-13 18:51:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 108 states have (on average 1.1111111111111112) internal successors, (120), 110 states have internal predecessors, (120), 38 states have call successors, (38), 16 states have call predecessors, (38), 20 states have return successors, (42), 40 states have call predecessors, (42), 37 states have call successors, (42) [2022-12-13 18:51:57,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 200 transitions. [2022-12-13 18:51:57,334 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 200 transitions. Word has length 147 [2022-12-13 18:51:57,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:57,334 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 200 transitions. [2022-12-13 18:51:57,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 11 states have internal predecessors, (85), 5 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-12-13 18:51:57,334 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 200 transitions. [2022-12-13 18:51:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:57,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:57,335 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1] [2022-12-13 18:51:57,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:51:57,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 18:51:57,536 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -897660901, now seen corresponding path program 1 times [2022-12-13 18:51:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800382017] [2022-12-13 18:51:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:57,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:51:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:51:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:51:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:51:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 18:51:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:51:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:51:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:51:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:51:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-12-13 18:51:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:51:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800382017] [2022-12-13 18:51:58,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800382017] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:51:58,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:51:58,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:51:58,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680191459] [2022-12-13 18:51:58,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:51:58,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:51:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:51:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:51:58,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:51:58,093 INFO L87 Difference]: Start difference. First operand 167 states and 200 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 18:51:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:51:58,993 INFO L93 Difference]: Finished difference Result 248 states and 300 transitions. [2022-12-13 18:51:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:51:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) Word has length 147 [2022-12-13 18:51:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:51:58,995 INFO L225 Difference]: With dead ends: 248 [2022-12-13 18:51:58,995 INFO L226 Difference]: Without dead ends: 186 [2022-12-13 18:51:58,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:51:58,996 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 263 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:51:58,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 522 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 18:51:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-12-13 18:51:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2022-12-13 18:51:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 112 states have (on average 1.1071428571428572) internal successors, (124), 114 states have internal predecessors, (124), 38 states have call successors, (38), 16 states have call predecessors, (38), 21 states have return successors, (43), 41 states have call predecessors, (43), 37 states have call successors, (43) [2022-12-13 18:51:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 205 transitions. [2022-12-13 18:51:59,008 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 205 transitions. Word has length 147 [2022-12-13 18:51:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:51:59,008 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 205 transitions. [2022-12-13 18:51:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 7 states have call predecessors, (25), 2 states have return successors, (22), 4 states have call predecessors, (22), 3 states have call successors, (22) [2022-12-13 18:51:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 205 transitions. [2022-12-13 18:51:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 18:51:59,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:51:59,009 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1] [2022-12-13 18:51:59,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:51:59,009 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:51:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:51:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -648190534, now seen corresponding path program 1 times [2022-12-13 18:51:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:51:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706315738] [2022-12-13 18:51:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:51:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:51:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:51:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 18:51:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:51:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:51:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:51:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:51:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 18:51:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:51:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:51:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 18:51:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:51:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 18:51:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:51:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:51:59,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:51:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:52:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:52:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 18:52:00,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:52:00,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706315738] [2022-12-13 18:52:00,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706315738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:52:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638464488] [2022-12-13 18:52:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:52:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:52:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:52:00,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:52:00,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:52:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:52:00,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 161 conjunts are in the unsatisfiable core [2022-12-13 18:52:00,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:52:00,458 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 [2022-12-13 18:52:00,614 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 6 treesize of output 5 [2022-12-13 18:52:02,184 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1397 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1397) |c_#memory_int|)) is different from true [2022-12-13 18:52:02,273 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 [2022-12-13 18:52:02,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 18:52:02,490 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 73 treesize of output 65 [2022-12-13 18:52:02,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 18:52:02,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 18:52:03,511 INFO L321 Elim1Store]: treesize reduction 168, result has 24.0 percent of original size [2022-12-13 18:52:03,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 179 treesize of output 163 [2022-12-13 18:52:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 7 proven. 64 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 18:52:03,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:52:05,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638464488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:52:05,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:52:05,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 42] total 53 [2022-12-13 18:52:05,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214395820] [2022-12-13 18:52:05,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 18:52:05,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-12-13 18:52:05,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:52:05,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-12-13 18:52:05,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=3352, Unknown=5, NotChecked=116, Total=3660 [2022-12-13 18:52:05,338 INFO L87 Difference]: Start difference. First operand 172 states and 205 transitions. Second operand has 53 states, 45 states have (on average 3.088888888888889) internal successors, (139), 37 states have internal predecessors, (139), 19 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (39), 17 states have call predecessors, (39), 18 states have call successors, (39) [2022-12-13 18:52:07,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 18:52:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:52:08,248 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2022-12-13 18:52:08,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:52:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 45 states have (on average 3.088888888888889) internal successors, (139), 37 states have internal predecessors, (139), 19 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (39), 17 states have call predecessors, (39), 18 states have call successors, (39) Word has length 147 [2022-12-13 18:52:08,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:52:08,249 INFO L225 Difference]: With dead ends: 184 [2022-12-13 18:52:08,249 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 18:52:08,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 155 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=282, Invalid=4409, Unknown=5, NotChecked=134, Total=4830 [2022-12-13 18:52:08,252 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:52:08,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 92 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 591 Invalid, 1 Unknown, 19 Unchecked, 2.5s Time] [2022-12-13 18:52:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 18:52:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 18:52:08,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 18:52:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 18:52:08,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 147 [2022-12-13 18:52:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:52:08,253 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:52:08,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 45 states have (on average 3.088888888888889) internal successors, (139), 37 states have internal predecessors, (139), 19 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (39), 17 states have call predecessors, (39), 18 states have call successors, (39) [2022-12-13 18:52:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:52:08,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 18:52:08,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 18:52:08,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 18:52:08,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 18:52:08,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 18:52:08,709 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6882 6887) the Hoare annotation is: (or (forall ((|v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4| Int)) (not (= (select |old(#valid)| |v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4|) 1))) (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= 194 |~#s_can_fail_allocator_static~0.base|)) (not (= |~#s_can_fail_allocator_static~0.offset| 0))) [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L895 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (or (forall ((|v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4| Int)) (not (= (select |old(#valid)| |v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4|) 1))) (not (= 194 |~#s_can_fail_allocator_static~0.base|)) (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) (not (= |~#s_can_fail_allocator_static~0.offset| 0))) [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point L6934(lines 6934 6936) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point L6935-1(line 6935) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L902 garLoopResultBuilder]: At program point L6935(line 6935) the Hoare annotation is: true [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point aws_mem_acquireEXIT(lines 6928 6938) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L902 garLoopResultBuilder]: At program point L6931-1(line 6931) the Hoare annotation is: true [2022-12-13 18:52:08,710 INFO L902 garLoopResultBuilder]: At program point L6931(line 6931) the Hoare annotation is: true [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point L6934-2(lines 6934 6936) no Hoare annotation was computed. [2022-12-13 18:52:08,710 INFO L899 garLoopResultBuilder]: For program point L6933(line 6933) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point L6929-2(line 6929) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L902 garLoopResultBuilder]: At program point L6929-1(line 6929) the Hoare annotation is: true [2022-12-13 18:52:08,711 INFO L902 garLoopResultBuilder]: At program point L6929(line 6929) the Hoare annotation is: true [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point aws_mem_acquireFINAL(lines 6928 6938) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6928 6938) the Hoare annotation is: true [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 261) the Hoare annotation is: true [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6252 6257) the Hoare annotation is: true [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2022-12-13 18:52:08,711 INFO L899 garLoopResultBuilder]: For program point aws_allocator_is_validFINAL(lines 6923 6926) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point L6925-1(line 6925) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point L6925(line 6925) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6923 6926) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point aws_allocator_is_validEXIT(lines 6923 6926) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 266) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point __CPROVER_overflow_plusFINAL(lines 248 251) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 248 251) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point __CPROVER_overflow_plusEXIT(lines 248 251) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point L8989(line 8989) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point L8990-1(line 8990) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point L8989-1(line 8989) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point L8989-2(line 8989) no Hoare annotation was computed. [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point L8990(line 8990) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L902 garLoopResultBuilder]: At program point L8989-4(line 8989) the Hoare annotation is: true [2022-12-13 18:52:08,712 INFO L899 garLoopResultBuilder]: For program point L8989-5(line 8989) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point aws_string_new_from_stringEXIT(lines 8988 8991) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8988 8991) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point aws_string_new_from_stringFINAL(lines 8988 8991) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L6900-3(lines 6900 6902) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6899 6903) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point L6902(line 6902) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point can_fail_mallocFINAL(lines 6899 6903) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L6900-1(lines 6900 6902) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point can_fail_mallocEXIT(lines 6899 6903) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point L6900(line 6900) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L6902-1(line 6902) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L8985-4(line 8985) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point L8985-1(line 8985) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L902 garLoopResultBuilder]: At program point L8983(line 8983) the Hoare annotation is: true [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L8985-2(line 8985) no Hoare annotation was computed. [2022-12-13 18:52:08,713 INFO L899 garLoopResultBuilder]: For program point L8983-1(line 8983) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L8985-3(line 8985) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L8973(line 8973) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point L8973-1(line 8973) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8964 8986) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point aws_string_new_from_arrayFINAL(lines 8964 8986) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L8965-1(line 8965) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point aws_string_new_from_arrayEXIT(lines 8964 8986) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point L8974(lines 8974 8978) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point L8968-1(line 8968) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point L8966(line 8966) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point L8968-2(lines 8968 8972) no Hoare annotation was computed. [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L-1-1(line -1) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L902 garLoopResultBuilder]: At program point L-1-3(line -1) the Hoare annotation is: true [2022-12-13 18:52:08,714 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memcpyFINAL(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point #Ultimate.C_memcpyEXIT(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 210 212) the Hoare annotation is: true [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 1988 1999) the Hoare annotation is: (or (= ~tl_last_error~0 |old(~tl_last_error~0)|) (not (= 194 |~#s_can_fail_allocator_static~0.base|))) [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point aws_raise_errorFINAL(lines 1988 1999) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point aws_raise_errorEXIT(lines 1988 1999) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point L7317(lines 7317 7319) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6889 6891) the Hoare annotation is: true [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L902 garLoopResultBuilder]: At program point L2542(line 2542) the Hoare annotation is: true [2022-12-13 18:52:08,715 INFO L899 garLoopResultBuilder]: For program point L2543-1(line 2543) no Hoare annotation was computed. [2022-12-13 18:52:08,715 INFO L902 garLoopResultBuilder]: At program point L2543(line 2543) the Hoare annotation is: true [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point L2542-1(lines 2542 2543) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 2613 2621) the Hoare annotation is: true [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point aws_add_size_checkedFINAL(lines 2613 2621) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L902 garLoopResultBuilder]: At program point aws_add_u64_checked_returnLabel#1(lines 2541 2546) the Hoare annotation is: true [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point aws_add_size_checkedEXIT(lines 2613 2621) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point L9338(lines 9338 9344) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L895 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2022-12-13 18:52:08,716 INFO L899 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2022-12-13 18:52:08,716 INFO L895 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (and (<= 1234549 |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1|) (= |~#s_can_fail_allocator_static~0.offset| 0) (<= 0 (+ (div |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) (div (+ (- |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~len~1#1|) 1234548) 18446744073709551616))) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 1234549) (<= 0 (+ (div |ULTIMATE.start_ensure_string_is_allocated_~len#1| 18446744073709551616) (div (+ (- |ULTIMATE.start_ensure_string_is_allocated_~len#1|) 1234548) 18446744073709551616))) (= 194 |~#s_can_fail_allocator_static~0.base|) (exists ((|v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4| Int)) (= (select |#valid| |v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4|) 1))) [2022-12-13 18:52:08,716 INFO L895 garLoopResultBuilder]: At program point L9338-2(lines 9338 9344) the Hoare annotation is: (and (not (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.offset| 0) (not (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.offset| 0) (let ((.cse0 (select |#memory_int| |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base|))) (let ((.cse1 (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 8)) 18446744073709551616))) (let ((.cse2 (<= .cse1 9223372036854775807))) (or (and (= (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 16 .cse1)) 256) 0) .cse2) (and (not .cse2) (= (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| .cse1 (- 18446744073709551600))) 256) 0)))))) (not (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.offset| 0) (= 194 |~#s_can_fail_allocator_static~0.base|) (not (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.base| 0)) (not (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.offset| 0) (not (= |ULTIMATE.start_ensure_string_is_allocated_~len#1| (+ (* (div |ULTIMATE.start_ensure_string_is_allocated_~len#1| 18446744073709551616) 18446744073709551616) 18446744073709551600))) (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 0)) [2022-12-13 18:52:08,716 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_length_returnLabel#1(lines 6800 6804) the Hoare annotation is: false [2022-12-13 18:52:08,716 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(line 9347) the Hoare annotation is: true [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L9343-2(line 9343) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L9339(line 9339) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L9339-1(line 9339) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L9343(line 9343) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L9343-1(line 9343) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L9335(line 9335) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L9335-1(line 9335) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_nondet_length_returnLabel#1(lines 6793 6798) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,717 INFO L895 garLoopResultBuilder]: At program point L9340(line 9340) the Hoare annotation is: false [2022-12-13 18:52:08,717 INFO L899 garLoopResultBuilder]: For program point L9340-1(line 9340) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_returnLabel#1(lines 6806 6816) the Hoare annotation is: false [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L9332(line 9332) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L9332-2(line 9332) the Hoare annotation is: false [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (and (<= 1234549 |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1|) (= |~#s_can_fail_allocator_static~0.offset| 0) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 1234549) (= 194 |~#s_can_fail_allocator_static~0.base|) (exists ((|v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4| Int)) (= (select |#valid| |v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4|) 1))) [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L9332-3(line 9332) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L9332-4(line 9332) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L9341(line 9341) the Hoare annotation is: false [2022-12-13 18:52:08,718 INFO L899 garLoopResultBuilder]: For program point L9341-1(line 9341) no Hoare annotation was computed. [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: false [2022-12-13 18:52:08,718 INFO L895 garLoopResultBuilder]: At program point L9345(line 9345) the Hoare annotation is: (and (not (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.offset| 0) (not (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_#res#1.offset| 0) (let ((.cse0 (select |#memory_int| |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.base|))) (let ((.cse1 (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 8)) 18446744073709551616))) (let ((.cse2 (<= .cse1 9223372036854775807))) (or (and (= (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 16 .cse1)) 256) 0) .cse2) (and (not .cse2) (= (mod (select .cse0 (+ |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| .cse1 (- 18446744073709551600))) 256) 0)))))) (not (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ULTIMATE.start_ensure_string_is_allocated_~str~0#1.offset| 0) (= 194 |~#s_can_fail_allocator_static~0.base|) (not (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.base| 0)) (not (= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_#res#1.base| 0)) (= |ULTIMATE.start_aws_string_new_from_string_harness_#t~ret1318#1| 1) (= |ULTIMATE.start_ensure_string_is_allocated_nondet_length_#res#1.offset| 0) (not (= |ULTIMATE.start_ensure_string_is_allocated_~len#1| (+ (* (div |ULTIMATE.start_ensure_string_is_allocated_~len#1| 18446744073709551616) 18446744073709551616) 18446744073709551600))) (= |ULTIMATE.start_aws_string_new_from_string_harness_~source~0#1.offset| 0)) [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L9345-1(line 9345) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L895 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: false [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L895 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (<= 1234549 |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1|) (= |~#s_can_fail_allocator_static~0.offset| 0) (<= |ULTIMATE.start_ensure_string_is_allocated_bounded_length_~max_size#1| 1234549) (= 194 |~#s_can_fail_allocator_static~0.base|) (exists ((|v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4| Int)) (= (select |#valid| |v_ULTIMATE.start_ensure_string_is_allocated_~str~0#1.base_BEFORE_CALL_4|) 1))) [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L9329(lines 9329 9346) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-12-13 18:52:08,719 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 222 224) the Hoare annotation is: true [2022-12-13 18:52:08,719 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-12-13 18:52:08,722 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:52:08,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 18:52:08,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 06:52:08 BoogieIcfgContainer [2022-12-13 18:52:08,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 18:52:08,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:52:08,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:52:08,729 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:52:08,729 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:51:13" (3/4) ... [2022-12-13 18:52:08,731 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 18:52:08,735 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_malloc [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_mem_acquire [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_new_from_array [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memcpy [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_raise_error [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_allocator_is_valid [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_add_size_checked [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 18:52:08,736 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __CPROVER_overflow_plus [2022-12-13 18:52:08,737 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_new_from_string [2022-12-13 18:52:08,744 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 154 nodes and edges [2022-12-13 18:52:08,745 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 68 nodes and edges [2022-12-13 18:52:08,746 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-12-13 18:52:08,746 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-12-13 18:52:08,747 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-13 18:52:08,747 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-13 18:52:08,748 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 18:52:08,748 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 18:52:09,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 18:52:09,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:52:09,098 INFO L158 Benchmark]: Toolchain (without parser) took 58856.17ms. Allocated memory was 140.5MB in the beginning and 358.6MB in the end (delta: 218.1MB). Free memory was 96.3MB in the beginning and 149.0MB in the end (delta: -52.7MB). Peak memory consumption was 282.7MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,098 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:52:09,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2033.94ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 96.3MB in the beginning and 105.3MB in the end (delta: -9.0MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.68ms. Allocated memory is still 169.9MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,099 INFO L158 Benchmark]: Boogie Preprocessor took 54.32ms. Allocated memory is still 169.9MB. Free memory was 93.6MB in the beginning and 86.4MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,099 INFO L158 Benchmark]: RCFGBuilder took 1162.69ms. Allocated memory is still 169.9MB. Free memory was 86.4MB in the beginning and 82.1MB in the end (delta: 4.4MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,099 INFO L158 Benchmark]: TraceAbstraction took 55092.52ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 81.0MB in the beginning and 71.7MB in the end (delta: 9.3MB). Peak memory consumption was 198.0MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,099 INFO L158 Benchmark]: Witness Printer took 368.63ms. Allocated memory is still 358.6MB. Free memory was 71.7MB in the beginning and 149.0MB in the end (delta: -77.3MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2022-12-13 18:52:09,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2033.94ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 96.3MB in the beginning and 105.3MB in the end (delta: -9.0MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.68ms. Allocated memory is still 169.9MB. Free memory was 105.3MB in the beginning and 93.6MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.32ms. Allocated memory is still 169.9MB. Free memory was 93.6MB in the beginning and 86.4MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1162.69ms. Allocated memory is still 169.9MB. Free memory was 86.4MB in the beginning and 82.1MB in the end (delta: 4.4MB). Peak memory consumption was 44.3MB. Max. memory is 16.1GB. * TraceAbstraction took 55092.52ms. Allocated memory was 169.9MB in the beginning and 358.6MB in the end (delta: 188.7MB). Free memory was 81.0MB in the beginning and 71.7MB in the end (delta: 9.3MB). Peak memory consumption was 198.0MB. Max. memory is 16.1GB. * Witness Printer took 368.63ms. Allocated memory is still 358.6MB. Free memory was 71.7MB in the beginning and 149.0MB in the end (delta: -77.3MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 17 procedures, 153 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.0s, OverallIterations: 17, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 19.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 2581 SdHoareTripleChecker+Valid, 14.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2414 mSDsluCounter, 16878 SdHoareTripleChecker+Invalid, 13.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 19 IncrementalHoareTripleChecker+Unchecked, 14598 mSDsCounter, 1510 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12589 IncrementalHoareTripleChecker+Invalid, 14128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1510 mSolverCounterUnsat, 2280 mSDtfsCounter, 12589 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2115 GetRequests, 1667 SyntacticMatches, 5 SemanticMatches, 443 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3479 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=200occurred in iteration=7, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 392 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 582 PreInvPairs, 588 NumberOfFragments, 425 HoareAnnotationTreeSize, 582 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 62 FomulaSimplificationsInter, 391 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 28.7s InterpolantComputationTime, 3202 NumberOfCodeBlocks, 3202 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3176 ConstructedInterpolants, 33 QuantifiedInterpolants, 11124 SizeOfPredicates, 126 NumberOfNonLiveVariables, 25122 ConjunctsInSsa, 371 ConjunctsInUnsatCore, 26 InterpolantComputations, 15 PerfectInterpolantSequences, 1766/1909 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6800]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6793]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9347]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8985]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 2541]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2022-12-13 18:52:09,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0fc7454-ed04-4411-a06f-3ba0b4b79f56/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE