./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/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 1ceabb113f39e2020701ba2408ea3e3730c8fefeda8a38befd6f4423a6766954 --- 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 13:51:55,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:51:55,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:51:55,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:51:55,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:51:55,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:51:55,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:51:55,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:51:55,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:51:55,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:51:55,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:51:55,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:51:55,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:51:55,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:51:55,822 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:51:55,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:51:55,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:51:55,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:51:55,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:51:55,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:51:55,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:51:55,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:51:55,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:51:55,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:51:55,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:51:55,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:51:55,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:51:55,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:51:55,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:51:55,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:51:55,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:51:55,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:51:55,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:51:55,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:51:55,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:51:55,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:51:55,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:51:55,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:51:55,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:51:55,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:51:55,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:51:55,846 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-12-13 13:51:55,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:51:55,868 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:51:55,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:51:55,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:51:55,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:51:55,869 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:51:55,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:51:55,870 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:51:55,870 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:51:55,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:51:55,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:51:55,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:51:55,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:51:55,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:51:55,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:51:55,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:51:55,872 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:51:55,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:51:55,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:51:55,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:51:55,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:51:55,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:51:55,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:51:55,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:51:55,874 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:51:55,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:51:55,874 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:51:55,874 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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ceabb113f39e2020701ba2408ea3e3730c8fefeda8a38befd6f4423a6766954 [2022-12-13 13:51:56,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:51:56,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:51:56,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:51:56,099 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:51:56,099 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:51:56,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2022-12-13 13:51:58,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:51:58,935 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:51:58,936 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i [2022-12-13 13:51:58,953 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/data/a6eed2e20/9143985744e346e4a496bc0a256a19d1/FLAG48270e014 [2022-12-13 13:51:58,963 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/data/a6eed2e20/9143985744e346e4a496bc0a256a19d1 [2022-12-13 13:51:58,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:51:58,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:51:58,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:51:58,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:51:58,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:51:58,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:51:58" (1/1) ... [2022-12-13 13:51:58,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d87b256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:51:58, skipping insertion in model container [2022-12-13 13:51:58,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:51:58" (1/1) ... [2022-12-13 13:51:58,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:51:59,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:51:59,202 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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2022-12-13 13:51:59,209 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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2022-12-13 13:51:59,753 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:51:59,787 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:51:59,797 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:51:59,802 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,803 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,803 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,804 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,805 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,808 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:51:59,814 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,815 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,816 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,816 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:51:59,876 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:51:59,877 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:51:59,877 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:51:59,882 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:51:59,884 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:51:59,884 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:51:59,984 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,086 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:52:00,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:52:00,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:52:00,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:52:00,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:52:00,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:52:00,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:52:00,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:52:00,091 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:52:00,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:52:00,092 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:52:00,203 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,205 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,206 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,206 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,224 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,239 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:52:00,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:52:00,274 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:52:00,283 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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4504,4517] [2022-12-13 13:52:00,284 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_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_static_harness_negated.i[4564,4577] [2022-12-13 13:52:00,306 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-12-13 13:52:00,310 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,314 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,317 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,318 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,319 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,320 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,323 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,324 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,325 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,330 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:52:00,330 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:52:00,330 WARN L623 FunctionHandler]: Unknown extern function htonl [2022-12-13 13:52:00,332 WARN L623 FunctionHandler]: Unknown extern function ntohl [2022-12-13 13:52:00,333 WARN L623 FunctionHandler]: Unknown extern function htons [2022-12-13 13:52:00,333 WARN L623 FunctionHandler]: Unknown extern function ntohs [2022-12-13 13:52:00,335 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,348 WARN L623 FunctionHandler]: Unknown extern function my_abort [2022-12-13 13:52:00,349 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-12-13 13:52:00,349 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-12-13 13:52:00,350 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-12-13 13:52:00,351 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-12-13 13:52:00,351 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-12-13 13:52:00,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-12-13 13:52:00,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-12-13 13:52:00,352 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-12-13 13:52:00,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-12-13 13:52:00,353 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-12-13 13:52:00,372 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,373 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,373 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,373 WARN L1576 CHandler]: Possible shadowing of function index [2022-12-13 13:52:00,378 WARN L623 FunctionHandler]: Unknown extern function my_memset [2022-12-13 13:52:00,396 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 13:52:00,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:52:00,548 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:52:00,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00 WrapperNode [2022-12-13 13:52:00,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:52:00,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:52:00,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:52:00,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:52:00,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,651 INFO L138 Inliner]: procedures = 689, calls = 1508, calls flagged for inlining = 54, calls inlined = 9, statements flattened = 652 [2022-12-13 13:52:00,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:52:00,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:52:00,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:52:00,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:52:00,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,704 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:52:00,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:52:00,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:52:00,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:52:00,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (1/1) ... [2022-12-13 13:52:00,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:52:00,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:00,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:52:00,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:52:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-12-13 13:52:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-12-13 13:52:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:52:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-12-13 13:52:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-12-13 13:52:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-12-13 13:52:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:52:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:52:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:52:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-12-13 13:52:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-12-13 13:52:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-12-13 13:52:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 13:52:00,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 13:52:00,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-12-13 13:52:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-12-13 13:52:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-12-13 13:52:00,784 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-12-13 13:52:00,784 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-12-13 13:52:00,785 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-12-13 13:52:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:52:00,985 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:52:00,988 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:52:01,637 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:52:01,644 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:52:01,644 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 13:52:01,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:52:01 BoogieIcfgContainer [2022-12-13 13:52:01,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:52:01,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:52:01,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:52:01,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:52:01,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:51:58" (1/3) ... [2022-12-13 13:52:01,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b241d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:52:01, skipping insertion in model container [2022-12-13 13:52:01,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:52:00" (2/3) ... [2022-12-13 13:52:01,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456b241d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:52:01, skipping insertion in model container [2022-12-13 13:52:01,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:52:01" (3/3) ... [2022-12-13 13:52:01,655 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_static_harness_negated.i [2022-12-13 13:52:01,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:52:01,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:52:01,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:52:01,728 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;@faf173d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:52:01,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:52:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-13 13:52:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 13:52:01,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:01,741 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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] [2022-12-13 13:52:01,742 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:01,747 INFO L85 PathProgramCache]: Analyzing trace with hash 602311799, now seen corresponding path program 1 times [2022-12-13 13:52:01,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:01,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57304268] [2022-12-13 13:52:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:02,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:02,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57304268] [2022-12-13 13:52:02,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 13:52:02,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910215982] [2022-12-13 13:52:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:02,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:02,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:02,092 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:02,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:52:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:02,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:52:02,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-12-13 13:52:02,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:02,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910215982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:02,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:02,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:52:02,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990376970] [2022-12-13 13:52:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:52:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:52:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:52:02,532 INFO L87 Difference]: Start difference. First operand has 147 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 95 states have internal predecessors, (118), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 13:52:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:02,561 INFO L93 Difference]: Finished difference Result 291 states and 418 transitions. [2022-12-13 13:52:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:52:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-12-13 13:52:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:02,569 INFO L225 Difference]: With dead ends: 291 [2022-12-13 13:52:02,569 INFO L226 Difference]: Without dead ends: 141 [2022-12-13 13:52:02,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:52:02,574 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:02,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:02,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-13 13:52:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2022-12-13 13:52:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-12-13 13:52:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2022-12-13 13:52:02,609 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 110 [2022-12-13 13:52:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:02,609 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2022-12-13 13:52:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 13:52:02,610 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2022-12-13 13:52:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 13:52:02,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:02,612 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:02,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:52:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 13:52:02,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:02,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1578415580, now seen corresponding path program 1 times [2022-12-13 13:52:02,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467366759] [2022-12-13 13:52:02,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:02,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:03,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:03,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972074267] [2022-12-13 13:52:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:03,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:03,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:03,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 13:52:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:03,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:52:03,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2022-12-13 13:52:03,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:03,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467366759] [2022-12-13 13:52:03,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972074267] [2022-12-13 13:52:03,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972074267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:03,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:03,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:52:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028461391] [2022-12-13 13:52:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:03,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:52:03,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:52:03,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:03,516 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:52:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:03,716 INFO L93 Difference]: Finished difference Result 237 states and 304 transitions. [2022-12-13 13:52:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 13:52:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 127 [2022-12-13 13:52:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:03,721 INFO L225 Difference]: With dead ends: 237 [2022-12-13 13:52:03,721 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 13:52:03,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 13:52:03,723 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 62 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:03,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 829 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 13:52:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-12-13 13:52:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 92 states have internal predecessors, (107), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2022-12-13 13:52:03,742 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 127 [2022-12-13 13:52:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:03,743 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2022-12-13 13:52:03,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-12-13 13:52:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2022-12-13 13:52:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 13:52:03,746 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:03,746 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:03,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 13:52:03,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:03,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1074934923, now seen corresponding path program 1 times [2022-12-13 13:52:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763951625] [2022-12-13 13:52:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:04,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:04,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663296842] [2022-12-13 13:52:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:04,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:04,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:04,031 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:04,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 13:52:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:04,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:52:04,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:04,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:04,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763951625] [2022-12-13 13:52:04,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663296842] [2022-12-13 13:52:04,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663296842] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:04,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:04,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 13:52:04,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312207682] [2022-12-13 13:52:04,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:04,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 13:52:04,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 13:52:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 13:52:04,393 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-12-13 13:52:04,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:04,429 INFO L93 Difference]: Finished difference Result 244 states and 318 transitions. [2022-12-13 13:52:04,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:52:04,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 142 [2022-12-13 13:52:04,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:04,432 INFO L225 Difference]: With dead ends: 244 [2022-12-13 13:52:04,432 INFO L226 Difference]: Without dead ends: 148 [2022-12-13 13:52:04,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:04,434 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 10 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:04,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 536 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:04,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-13 13:52:04,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2022-12-13 13:52:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 92 states have (on average 1.184782608695652) internal successors, (109), 94 states have internal predecessors, (109), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2022-12-13 13:52:04,449 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 142 [2022-12-13 13:52:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:04,450 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2022-12-13 13:52:04,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-12-13 13:52:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2022-12-13 13:52:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 13:52:04,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:04,453 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:04,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 13:52:04,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:04,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:04,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1467961933, now seen corresponding path program 1 times [2022-12-13 13:52:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:04,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88025684] [2022-12-13 13:52:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:04,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:04,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707117422] [2022-12-13 13:52:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:04,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:04,824 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:04,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 13:52:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:05,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-13 13:52:05,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:05,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 13:52:05,364 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_575 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_575)) |c_#memory_$Pointer$.base|)) is different from true [2022-12-13 13:52:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-12-13 13:52:05,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:05,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:05,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88025684] [2022-12-13 13:52:05,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:05,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707117422] [2022-12-13 13:52:05,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707117422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:05,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:05,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-13 13:52:05,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536280289] [2022-12-13 13:52:05,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:05,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:52:05,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:05,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:52:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=191, Unknown=13, NotChecked=28, Total=272 [2022-12-13 13:52:05,577 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-12-13 13:52:07,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:07,728 INFO L93 Difference]: Finished difference Result 360 states and 493 transitions. [2022-12-13 13:52:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 13:52:07,728 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 142 [2022-12-13 13:52:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:07,732 INFO L225 Difference]: With dead ends: 360 [2022-12-13 13:52:07,732 INFO L226 Difference]: Without dead ends: 262 [2022-12-13 13:52:07,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=609, Unknown=21, NotChecked=52, Total=812 [2022-12-13 13:52:07,733 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 231 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 207 mSolverCounterUnsat, 118 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 118 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:07,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 861 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1482 Invalid, 118 Unknown, 289 Unchecked, 1.8s Time] [2022-12-13 13:52:07,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-12-13 13:52:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 146. [2022-12-13 13:52:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 95 states have internal predecessors, (110), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2022-12-13 13:52:07,748 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 142 [2022-12-13 13:52:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:07,749 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2022-12-13 13:52:07,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 8 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2022-12-13 13:52:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2022-12-13 13:52:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 13:52:07,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:07,750 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:07,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 13:52:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:07,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:07,953 INFO L85 PathProgramCache]: Analyzing trace with hash 940161605, now seen corresponding path program 1 times [2022-12-13 13:52:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:07,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60246231] [2022-12-13 13:52:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:08,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947617211] [2022-12-13 13:52:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:08,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:08,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:08,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 13:52:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:08,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 13:52:08,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:08,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:08,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:08,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60246231] [2022-12-13 13:52:08,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:08,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947617211] [2022-12-13 13:52:08,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947617211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:08,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:08,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:52:08,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238596944] [2022-12-13 13:52:08,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:08,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:52:08,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:08,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:52:08,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:52:08,473 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-12-13 13:52:08,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:08,625 INFO L93 Difference]: Finished difference Result 250 states and 325 transitions. [2022-12-13 13:52:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:52:08,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2022-12-13 13:52:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:08,627 INFO L225 Difference]: With dead ends: 250 [2022-12-13 13:52:08,627 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 13:52:08,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:52:08,629 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 10 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:08,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 673 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 13:52:08,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2022-12-13 13:52:08,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 states have internal predecessors, (111), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2022-12-13 13:52:08,645 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 144 [2022-12-13 13:52:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:08,645 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2022-12-13 13:52:08,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-12-13 13:52:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2022-12-13 13:52:08,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 13:52:08,647 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:08,648 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:08,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 13:52:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:08,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:08,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:08,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1620219975, now seen corresponding path program 1 times [2022-12-13 13:52:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:08,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328841383] [2022-12-13 13:52:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:08,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:08,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681037390] [2022-12-13 13:52:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:08,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:08,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:08,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:08,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 13:52:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:09,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 13:52:09,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:09,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328841383] [2022-12-13 13:52:09,437 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681037390] [2022-12-13 13:52:09,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681037390] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:09,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:09,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 13:52:09,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418931409] [2022-12-13 13:52:09,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 13:52:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:09,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 13:52:09,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 13:52:09,439 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 13:52:09,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:09,480 INFO L93 Difference]: Finished difference Result 266 states and 340 transitions. [2022-12-13 13:52:09,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 13:52:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 144 [2022-12-13 13:52:09,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:09,482 INFO L225 Difference]: With dead ends: 266 [2022-12-13 13:52:09,482 INFO L226 Difference]: Without dead ends: 147 [2022-12-13 13:52:09,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 13:52:09,483 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 13 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:09,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 864 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:09,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-12-13 13:52:09,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-12-13 13:52:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 94 states have (on average 1.1702127659574468) internal successors, (110), 96 states have internal predecessors, (110), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 189 transitions. [2022-12-13 13:52:09,497 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 189 transitions. Word has length 144 [2022-12-13 13:52:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:09,497 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 189 transitions. [2022-12-13 13:52:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-12-13 13:52:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 189 transitions. [2022-12-13 13:52:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 13:52:09,499 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:09,499 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:09,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 13:52:09,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 13:52:09,701 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:09,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:09,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1782655420, now seen corresponding path program 1 times [2022-12-13 13:52:09,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:09,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53668290] [2022-12-13 13:52:09,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:09,775 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:09,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80466431] [2022-12-13 13:52:09,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:09,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:09,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:09,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 13:52:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:10,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 13:52:10,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:10,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:52:10,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:10,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53668290] [2022-12-13 13:52:10,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:10,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80466431] [2022-12-13 13:52:10,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80466431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:52:10,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:52:10,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:52:10,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370894659] [2022-12-13 13:52:10,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:52:10,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:52:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:10,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:52:10,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:52:10,321 INFO L87 Difference]: Start difference. First operand 147 states and 189 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-13 13:52:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:10,337 INFO L93 Difference]: Finished difference Result 268 states and 342 transitions. [2022-12-13 13:52:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:52:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2022-12-13 13:52:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:10,339 INFO L225 Difference]: With dead ends: 268 [2022-12-13 13:52:10,339 INFO L226 Difference]: Without dead ends: 149 [2022-12-13 13:52:10,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:52:10,340 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:10,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:52:10,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-13 13:52:10,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 148. [2022-12-13 13:52:10,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 95 states have (on average 1.168421052631579) internal successors, (111), 97 states have internal predecessors, (111), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 190 transitions. [2022-12-13 13:52:10,347 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 190 transitions. Word has length 145 [2022-12-13 13:52:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:10,348 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 190 transitions. [2022-12-13 13:52:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-12-13 13:52:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 190 transitions. [2022-12-13 13:52:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 13:52:10,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:10,349 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:10,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 13:52:10,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:10,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:10,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -626640314, now seen corresponding path program 1 times [2022-12-13 13:52:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:10,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244576603] [2022-12-13 13:52:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:10,621 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:10,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623067518] [2022-12-13 13:52:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:10,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:10,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:10,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:10,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 13:52:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:52:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 2505 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 13:52:11,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 198 proven. 1 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:11,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:52:11,438 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244576603] [2022-12-13 13:52:11,438 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:11,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623067518] [2022-12-13 13:52:11,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623067518] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:52:11,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:52:11,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-12-13 13:52:11,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711979423] [2022-12-13 13:52:11,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:52:11,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 13:52:11,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:11,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 13:52:11,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-12-13 13:52:11,441 INFO L87 Difference]: Start difference. First operand 148 states and 190 transitions. Second operand has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:11,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:11,557 INFO L93 Difference]: Finished difference Result 270 states and 344 transitions. [2022-12-13 13:52:11,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 13:52:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 147 [2022-12-13 13:52:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:11,559 INFO L225 Difference]: With dead ends: 270 [2022-12-13 13:52:11,559 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 13:52:11,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 280 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-12-13 13:52:11,560 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 19 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:11,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1378 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 13:52:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 150. [2022-12-13 13:52:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 99 states have internal predecessors, (113), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2022-12-13 13:52:11,567 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 147 [2022-12-13 13:52:11,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:11,568 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2022-12-13 13:52:11,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 13 states have internal predecessors, (74), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:11,568 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2022-12-13 13:52:11,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 13:52:11,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:11,569 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:11,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 13:52:11,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:11,771 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:11,773 INFO L85 PathProgramCache]: Analyzing trace with hash -2092653112, now seen corresponding path program 2 times [2022-12-13 13:52:11,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684811151] [2022-12-13 13:52:11,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:11,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:11,850 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:11,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952115158] [2022-12-13 13:52:11,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:52:11,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:11,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:11,852 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:11,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 13:52:12,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:52:12,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:52:12,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 13:52:12,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 198 proven. 4 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:13,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:52:13,270 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:13,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684811151] [2022-12-13 13:52:13,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:13,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952115158] [2022-12-13 13:52:13,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952115158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:52:13,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:52:13,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-12-13 13:52:13,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836589200] [2022-12-13 13:52:13,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:52:13,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 13:52:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:13,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 13:52:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-12-13 13:52:13,273 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:13,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:13,386 INFO L93 Difference]: Finished difference Result 272 states and 346 transitions. [2022-12-13 13:52:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 13:52:13,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 149 [2022-12-13 13:52:13,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:13,388 INFO L225 Difference]: With dead ends: 272 [2022-12-13 13:52:13,388 INFO L226 Difference]: Without dead ends: 153 [2022-12-13 13:52:13,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-12-13 13:52:13,389 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 28 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:13,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1212 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:13,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-13 13:52:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2022-12-13 13:52:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 101 states have internal predecessors, (115), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 194 transitions. [2022-12-13 13:52:13,399 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 194 transitions. Word has length 149 [2022-12-13 13:52:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:13,399 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 194 transitions. [2022-12-13 13:52:13,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.0) internal successors, (78), 15 states have internal predecessors, (78), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 194 transitions. [2022-12-13 13:52:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 13:52:13,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:13,401 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:13,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 13:52:13,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:13,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:13,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2113288394, now seen corresponding path program 3 times [2022-12-13 13:52:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:13,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902006269] [2022-12-13 13:52:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:13,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:13,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:13,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1201877975] [2022-12-13 13:52:13,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:52:13,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:13,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:13,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:13,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 13:52:20,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-13 13:52:20,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:52:20,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 13:52:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 198 proven. 9 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:20,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:52:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:20,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:20,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902006269] [2022-12-13 13:52:20,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:20,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201877975] [2022-12-13 13:52:20,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201877975] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:52:20,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:52:20,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-12-13 13:52:20,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119623233] [2022-12-13 13:52:20,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:52:20,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 13:52:20,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 13:52:20,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-12-13 13:52:20,667 INFO L87 Difference]: Start difference. First operand 152 states and 194 transitions. Second operand has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:20,811 INFO L93 Difference]: Finished difference Result 274 states and 348 transitions. [2022-12-13 13:52:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 13:52:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 151 [2022-12-13 13:52:20,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:20,813 INFO L225 Difference]: With dead ends: 274 [2022-12-13 13:52:20,813 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 13:52:20,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-12-13 13:52:20,814 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 21 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:20,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1554 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 13:52:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2022-12-13 13:52:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 103 states have internal predecessors, (117), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 196 transitions. [2022-12-13 13:52:20,827 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 196 transitions. Word has length 151 [2022-12-13 13:52:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:20,828 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 196 transitions. [2022-12-13 13:52:20,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.466666666666667) internal successors, (82), 17 states have internal predecessors, (82), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 196 transitions. [2022-12-13 13:52:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 13:52:20,829 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:20,829 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:20,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 13:52:21,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 13:52:21,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:21,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:21,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1836117172, now seen corresponding path program 4 times [2022-12-13 13:52:21,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:21,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224322238] [2022-12-13 13:52:21,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:21,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:21,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:21,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083688041] [2022-12-13 13:52:21,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 13:52:21,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:21,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:21,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:21,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 13:52:21,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 13:52:21,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:52:21,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 13:52:21,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:21,792 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 198 proven. 16 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:21,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:52:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:22,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:22,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224322238] [2022-12-13 13:52:22,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:22,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083688041] [2022-12-13 13:52:22,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083688041] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:52:22,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:52:22,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-12-13 13:52:22,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210563202] [2022-12-13 13:52:22,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:52:22,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 13:52:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:22,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 13:52:22,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-12-13 13:52:22,198 INFO L87 Difference]: Start difference. First operand 154 states and 196 transitions. Second operand has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:22,388 INFO L93 Difference]: Finished difference Result 276 states and 350 transitions. [2022-12-13 13:52:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 13:52:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 153 [2022-12-13 13:52:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:22,390 INFO L225 Difference]: With dead ends: 276 [2022-12-13 13:52:22,390 INFO L226 Difference]: Without dead ends: 157 [2022-12-13 13:52:22,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-12-13 13:52:22,391 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 21 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:22,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1726 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-12-13 13:52:22,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2022-12-13 13:52:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 105 states have internal predecessors, (119), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2022-12-13 13:52:22,398 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 153 [2022-12-13 13:52:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:22,398 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2022-12-13 13:52:22,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 19 states have internal predecessors, (86), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2022-12-13 13:52:22,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 13:52:22,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:22,399 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:22,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 13:52:22,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 13:52:22,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:22,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:22,601 INFO L85 PathProgramCache]: Analyzing trace with hash -463776434, now seen corresponding path program 5 times [2022-12-13 13:52:22,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:22,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003530017] [2022-12-13 13:52:22,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:22,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:22,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1048210575] [2022-12-13 13:52:22,685 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 13:52:22,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:22,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:22,686 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:22,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 13:52:23,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-12-13 13:52:23,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:52:23,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 13:52:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:52:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 198 proven. 25 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:52:24,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:52:24,376 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:52:24,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:52:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003530017] [2022-12-13 13:52:24,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:52:24,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048210575] [2022-12-13 13:52:24,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048210575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:52:24,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:52:24,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-12-13 13:52:24,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2933929] [2022-12-13 13:52:24,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:52:24,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 13:52:24,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:52:24,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 13:52:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-13 13:52:24,379 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 21 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:52:24,588 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2022-12-13 13:52:24,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 13:52:24,589 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 21 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 155 [2022-12-13 13:52:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:52:24,590 INFO L225 Difference]: With dead ends: 278 [2022-12-13 13:52:24,590 INFO L226 Difference]: Without dead ends: 159 [2022-12-13 13:52:24,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-12-13 13:52:24,591 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 26 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:52:24,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2072 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:52:24,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-12-13 13:52:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 158. [2022-12-13 13:52:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 107 states have internal predecessors, (121), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:52:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 200 transitions. [2022-12-13 13:52:24,601 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 200 transitions. Word has length 155 [2022-12-13 13:52:24,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:52:24,601 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 200 transitions. [2022-12-13 13:52:24,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 21 states have internal predecessors, (90), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:52:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 200 transitions. [2022-12-13 13:52:24,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-12-13 13:52:24,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:52:24,602 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:52:24,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 13:52:24,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:24,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:52:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:52:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -199287088, now seen corresponding path program 6 times [2022-12-13 13:52:24,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:52:24,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662088241] [2022-12-13 13:52:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:52:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:52:24,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:52:24,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856685088] [2022-12-13 13:52:24,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 13:52:24,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:52:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:52:24,870 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:52:24,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 13:55:20,866 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-12-13 13:55:20,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:55:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 13:55:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:55:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 198 proven. 36 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:55:21,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:55:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662088241] [2022-12-13 13:55:21,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:55:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856685088] [2022-12-13 13:55:21,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856685088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:55:21,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:55:21,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-12-13 13:55:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615023820] [2022-12-13 13:55:21,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:55:21,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 13:55:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:21,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 13:55:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2022-12-13 13:55:21,473 INFO L87 Difference]: Start difference. First operand 158 states and 200 transitions. Second operand has 23 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:21,738 INFO L93 Difference]: Finished difference Result 280 states and 354 transitions. [2022-12-13 13:55:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 13:55:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 157 [2022-12-13 13:55:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:21,740 INFO L225 Difference]: With dead ends: 280 [2022-12-13 13:55:21,740 INFO L226 Difference]: Without dead ends: 161 [2022-12-13 13:55:21,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2022-12-13 13:55:21,741 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 26 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:21,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2246 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:55:21,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-13 13:55:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2022-12-13 13:55:21,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.1495327102803738) internal successors, (123), 109 states have internal predecessors, (123), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:55:21,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 202 transitions. [2022-12-13 13:55:21,749 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 202 transitions. Word has length 157 [2022-12-13 13:55:21,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:21,749 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 202 transitions. [2022-12-13 13:55:21,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:21,749 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 202 transitions. [2022-12-13 13:55:21,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 13:55:21,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:21,750 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:21,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 13:55:21,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 13:55:21,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:21,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash 571903954, now seen corresponding path program 7 times [2022-12-13 13:55:21,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:21,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361740989] [2022-12-13 13:55:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:22,030 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:55:22,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [122123752] [2022-12-13 13:55:22,031 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 13:55:22,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:55:22,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:55:22,032 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:55:22,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 13:55:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:55:22,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 13:55:22,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:55:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 198 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:55:22,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:55:23,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361740989] [2022-12-13 13:55:23,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:55:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122123752] [2022-12-13 13:55:23,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122123752] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:55:23,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:55:23,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-12-13 13:55:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408807611] [2022-12-13 13:55:23,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:55:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 13:55:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 13:55:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-12-13 13:55:23,302 INFO L87 Difference]: Start difference. First operand 160 states and 202 transitions. Second operand has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:23,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:23,582 INFO L93 Difference]: Finished difference Result 282 states and 356 transitions. [2022-12-13 13:55:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 13:55:23,583 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 159 [2022-12-13 13:55:23,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:23,584 INFO L225 Difference]: With dead ends: 282 [2022-12-13 13:55:23,585 INFO L226 Difference]: Without dead ends: 163 [2022-12-13 13:55:23,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2022-12-13 13:55:23,586 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 19 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:23,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2420 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:55:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-12-13 13:55:23,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2022-12-13 13:55:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 109 states have (on average 1.146788990825688) internal successors, (125), 111 states have internal predecessors, (125), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:55:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 204 transitions. [2022-12-13 13:55:23,597 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 204 transitions. Word has length 159 [2022-12-13 13:55:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:23,598 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 204 transitions. [2022-12-13 13:55:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.260869565217392) internal successors, (98), 25 states have internal predecessors, (98), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 204 transitions. [2022-12-13 13:55:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-12-13 13:55:23,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:23,599 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:23,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 13:55:23,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 13:55:23,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1342846892, now seen corresponding path program 8 times [2022-12-13 13:55:23,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:23,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992875675] [2022-12-13 13:55:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:23,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:55:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017179399] [2022-12-13 13:55:23,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 13:55:23,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:55:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:55:23,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:55:23,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 13:55:25,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 13:55:25,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 13:55:25,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 2638 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 13:55:25,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:55:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 198 proven. 64 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-12-13 13:55:25,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 13:55:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2022-12-13 13:55:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:55:26,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992875675] [2022-12-13 13:55:26,361 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 13:55:26,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017179399] [2022-12-13 13:55:26,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017179399] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 13:55:26,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 13:55:26,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2022-12-13 13:55:26,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104598099] [2022-12-13 13:55:26,362 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 13:55:26,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 13:55:26,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:55:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 13:55:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-12-13 13:55:26,363 INFO L87 Difference]: Start difference. First operand 162 states and 204 transitions. Second operand has 27 states, 25 states have (on average 4.08) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:55:26,632 INFO L93 Difference]: Finished difference Result 284 states and 358 transitions. [2022-12-13 13:55:26,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 13:55:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.08) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 161 [2022-12-13 13:55:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:55:26,633 INFO L225 Difference]: With dead ends: 284 [2022-12-13 13:55:26,633 INFO L226 Difference]: Without dead ends: 165 [2022-12-13 13:55:26,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2022-12-13 13:55:26,634 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 28 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 13:55:26,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2254 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 13:55:26,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-12-13 13:55:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2022-12-13 13:55:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.1441441441441442) internal successors, (127), 113 states have internal predecessors, (127), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2022-12-13 13:55:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 206 transitions. [2022-12-13 13:55:26,641 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 206 transitions. Word has length 161 [2022-12-13 13:55:26,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:55:26,641 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 206 transitions. [2022-12-13 13:55:26,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.08) internal successors, (102), 27 states have internal predecessors, (102), 6 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2022-12-13 13:55:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 206 transitions. [2022-12-13 13:55:26,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 13:55:26,642 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:55:26,642 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:55:26,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 13:55:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 13:55:26,843 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:55:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:55:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1122560086, now seen corresponding path program 9 times [2022-12-13 13:55:26,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:55:26,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889838046] [2022-12-13 13:55:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:55:26,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:55:26,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 13:55:26,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40274127] [2022-12-13 13:55:26,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 13:55:26,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:55:26,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:55:26,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:55:26,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ce0b6fe-c094-482b-a2f0-f97e5fdef667/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process