./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ --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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- 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-dbf71c6-m [2022-10-17 11:02:48,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:48,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:48,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:48,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:48,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:48,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:48,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:48,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:48,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:48,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:48,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:48,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:48,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:48,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:48,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:48,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:48,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:48,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:48,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:48,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:48,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:48,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:48,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:48,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:48,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:48,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:48,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:48,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:48,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:48,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:48,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:48,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:48,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:48,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:48,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:48,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:48,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:48,889 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:48,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:48,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:48,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 11:02:48,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:48,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:48,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:48,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:48,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:02:48,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:02:48,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:48,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:48,953 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:48,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:48,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:48,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:48,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:02:48,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:02:48,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:02:48,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:48,956 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:48,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:02:48,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:48,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:48,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:02:48,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:48,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:48,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:02:48,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:02:48,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:48,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:02:48,959 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:02:48,959 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:02:48,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:02:48,959 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2022-10-17 11:02:49,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:49,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:49,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:49,270 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:49,271 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:49,273 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-10-17 11:02:49,344 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/data/25513dd7d/777197acb0384d9da11710f6cfa4eb98/FLAGb1541ab4e [2022-10-17 11:02:50,136 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:50,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2022-10-17 11:02:50,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/data/25513dd7d/777197acb0384d9da11710f6cfa4eb98/FLAGb1541ab4e [2022-10-17 11:02:50,684 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/data/25513dd7d/777197acb0384d9da11710f6cfa4eb98 [2022-10-17 11:02:50,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:50,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:50,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:50,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:50,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:50,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:50" (1/1) ... [2022-10-17 11:02:50,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce40e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:50, skipping insertion in model container [2022-10-17 11:02:50,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:50" (1/1) ... [2022-10-17 11:02:50,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:50,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:51,155 WARN L230 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_470a1b16-cc71-4293-94eb-8ec16dce54f1/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-10-17 11:02:51,161 WARN L230 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_470a1b16-cc71-4293-94eb-8ec16dce54f1/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-10-17 11:02:52,041 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 11:02:52,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,136 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,174 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,176 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,187 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,192 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,193 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,611 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 11:02:52,612 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 11:02:52,613 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 11:02:52,615 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 11:02:52,616 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 11:02:52,617 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 11:02:52,618 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 11:02:52,619 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 11:02:52,620 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 11:02:52,621 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 11:02:52,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:52,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:53,016 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:53,043 WARN L230 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_470a1b16-cc71-4293-94eb-8ec16dce54f1/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2022-10-17 11:02:53,048 WARN L230 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_470a1b16-cc71-4293-94eb-8ec16dce54f1/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2022-10-17 11:02:53,084 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-10-17 11:02:53,101 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,101 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,102 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,102 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,103 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,110 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,111 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,112 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,113 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,114 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,115 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,151 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-10-17 11:02:53,152 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-10-17 11:02:53,153 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-10-17 11:02:53,154 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-10-17 11:02:53,155 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-10-17 11:02:53,155 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-10-17 11:02:53,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-10-17 11:02:53,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-10-17 11:02:53,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-10-17 11:02:53,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-10-17 11:02:53,182 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,187 WARN L1550 CHandler]: Possible shadowing of function index [2022-10-17 11:02:53,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:53,467 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:53,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53 WrapperNode [2022-10-17 11:02:53,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:53,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:53,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:53,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:53,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,695 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2022-10-17 11:02:53,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:53,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:53,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:53,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:53,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:53,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:53,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:53,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:53,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (1/1) ... [2022-10-17 11:02:53,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:02:53,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:53,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:53,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:53,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 11:02:53,937 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-10-17 11:02:53,937 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-10-17 11:02:53,939 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-10-17 11:02:53,939 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-10-17 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-10-17 11:02:53,940 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-10-17 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 11:02:53,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-10-17 11:02:53,940 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-10-17 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 11:02:53,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:02:53,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 11:02:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:53,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:53,942 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-10-17 11:02:53,943 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-10-17 11:02:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-10-17 11:02:53,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-10-17 11:02:53,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-10-17 11:02:53,943 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-10-17 11:02:53,944 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-10-17 11:02:53,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-10-17 11:02:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 11:02:53,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 11:02:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 11:02:53,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-10-17 11:02:53,946 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-10-17 11:02:53,946 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-10-17 11:02:53,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-10-17 11:02:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 11:02:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-10-17 11:02:53,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-10-17 11:02:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:02:54,407 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:54,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:55,616 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:55,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:55,624 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:02:55,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:55 BoogieIcfgContainer [2022-10-17 11:02:55,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:55,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:02:55,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:02:55,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:02:55,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:02:50" (1/3) ... [2022-10-17 11:02:55,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e09d0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:55, skipping insertion in model container [2022-10-17 11:02:55,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:53" (2/3) ... [2022-10-17 11:02:55,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e09d0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:02:55, skipping insertion in model container [2022-10-17 11:02:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:55" (3/3) ... [2022-10-17 11:02:55,636 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2022-10-17 11:02:55,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:02:55,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:02:55,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:02:55,718 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;@4725e316, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:02:55,719 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:02:55,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-10-17 11:02:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 11:02:55,736 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:55,737 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-10-17 11:02:55,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:55,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:55,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1468528252, now seen corresponding path program 1 times [2022-10-17 11:02:55,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:55,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678090836] [2022-10-17 11:02:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:55,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:02:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:02:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:02:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:02:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:02:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 11:02:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 11:02:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 11:02:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 11:02:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 11:02:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 11:02:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-10-17 11:02:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:56,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678090836] [2022-10-17 11:02:56,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678090836] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:56,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:56,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:02:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940382282] [2022-10-17 11:02:56,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:56,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:02:56,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:56,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:02:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:56,713 INFO L87 Difference]: Start difference. First operand has 123 states, 78 states have (on average 1.205128205128205) internal successors, (94), 79 states have internal predecessors, (94), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-17 11:02:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:57,211 INFO L93 Difference]: Finished difference Result 248 states and 337 transitions. [2022-10-17 11:02:57,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:02:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-10-17 11:02:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:57,225 INFO L225 Difference]: With dead ends: 248 [2022-10-17 11:02:57,225 INFO L226 Difference]: Without dead ends: 123 [2022-10-17 11:02:57,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:02:57,234 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:57,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 191 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 11:02:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-10-17 11:02:57,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2022-10-17 11:02:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 72 states have internal predecessors, (82), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-10-17 11:02:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2022-10-17 11:02:57,295 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 71 [2022-10-17 11:02:57,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:57,296 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2022-10-17 11:02:57,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-10-17 11:02:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2022-10-17 11:02:57,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 11:02:57,300 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:57,301 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-10-17 11:02:57,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:02:57,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1288118090, now seen corresponding path program 1 times [2022-10-17 11:02:57,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:57,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025415601] [2022-10-17 11:02:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:57,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:02:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 11:02:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 11:02:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-17 11:02:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:02:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-10-17 11:02:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 11:02:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-10-17 11:02:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-10-17 11:02:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-10-17 11:02:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-10-17 11:02:57,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-10-17 11:02:57,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025415601] [2022-10-17 11:02:57,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025415601] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:02:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141109990] [2022-10-17 11:02:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:57,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:02:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:57,940 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:02:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:02:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:58,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 11:02:58,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-10-17 11:02:58,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:02:58,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141109990] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:58,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:02:58,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-10-17 11:02:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659205255] [2022-10-17 11:02:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:58,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:02:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:58,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:02:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:02:58,535 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 11:02:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:58,746 INFO L93 Difference]: Finished difference Result 193 states and 240 transitions. [2022-10-17 11:02:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:02:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 71 [2022-10-17 11:02:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:58,750 INFO L225 Difference]: With dead ends: 193 [2022-10-17 11:02:58,750 INFO L226 Difference]: Without dead ends: 116 [2022-10-17 11:02:58,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-10-17 11:02:58,753 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 149 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:58,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 403 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:02:58,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-17 11:02:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-10-17 11:02:58,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2022-10-17 11:02:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-10-17 11:02:58,772 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 71 [2022-10-17 11:02:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:58,773 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-10-17 11:02:58,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-10-17 11:02:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-10-17 11:02:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 11:02:58,777 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:58,777 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:02:58,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:58,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-17 11:02:58,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:02:58,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:58,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1724800482, now seen corresponding path program 1 times [2022-10-17 11:02:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:58,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806415466] [2022-10-17 11:02:58,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:59,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:59,088 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:02:59,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174901170] [2022-10-17 11:02:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:59,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:02:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:59,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:02:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:02:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:59,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-10-17 11:02:59,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:02:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:59,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806415466] [2022-10-17 11:02:59,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 11:02:59,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174901170] [2022-10-17 11:02:59,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174901170] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:59,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:59,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 11:02:59,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927468697] [2022-10-17 11:02:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 11:02:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 11:02:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:02:59,661 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 11:02:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:59,942 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2022-10-17 11:02:59,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 11:02:59,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-10-17 11:02:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:02:59,946 INFO L225 Difference]: With dead ends: 182 [2022-10-17 11:02:59,946 INFO L226 Difference]: Without dead ends: 114 [2022-10-17 11:02:59,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-10-17 11:02:59,948 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 151 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:02:59,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 565 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:02:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-17 11:02:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-10-17 11:02:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 72 states have internal predecessors, (81), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-10-17 11:02:59,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 139 transitions. [2022-10-17 11:02:59,966 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 139 transitions. Word has length 86 [2022-10-17 11:02:59,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:02:59,967 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 139 transitions. [2022-10-17 11:02:59,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-10-17 11:02:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 139 transitions. [2022-10-17 11:02:59,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-10-17 11:02:59,970 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:02:59,970 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-10-17 11:03:00,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:03:00,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:03:00,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:03:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:03:00,186 INFO L85 PathProgramCache]: Analyzing trace with hash -146566572, now seen corresponding path program 1 times [2022-10-17 11:03:00,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:03:00,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647860633] [2022-10-17 11:03:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:03:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:03:00,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 11:03:00,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078517408] [2022-10-17 11:03:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:03:00,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:03:00,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:03:00,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:03:00,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_470a1b16-cc71-4293-94eb-8ec16dce54f1/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:03:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:03:01,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 2487 conjuncts, 242 conjunts are in the unsatisfiable core [2022-10-17 11:03:01,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:03:01,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 11:03:01,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 11:03:10,179 INFO L356 Elim1Store]: treesize reduction 202, result has 38.6 percent of original size [2022-10-17 11:03:10,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 146 treesize of output 287 [2022-10-17 11:03:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:10,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:10,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 138 [2022-10-17 11:03:18,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:18,788 INFO L356 Elim1Store]: treesize reduction 24, result has 42.9 percent of original size [2022-10-17 11:03:18,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 80 [2022-10-17 11:03:19,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:19,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:19,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-10-17 11:03:19,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:19,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:19,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:19,662 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-10-17 11:03:19,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:19,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:19,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:20,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:20,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:20,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:20,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:20,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:20,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:20,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 11:03:20,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:20,693 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:20,781 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 11:03:20,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:20,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:20,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:20,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-10-17 11:03:20,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2022-10-17 11:03:21,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:21,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:21,272 INFO L356 Elim1Store]: treesize reduction 27, result has 10.0 percent of original size [2022-10-17 11:03:21,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 66 [2022-10-17 11:03:21,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:21,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 11:03:21,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45