./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN --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 c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d --- 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-6b4ec56 [2022-11-20 11:43:05,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:43:05,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:43:05,098 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:43:05,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:43:05,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:43:05,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:43:05,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:43:05,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:43:05,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:43:05,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:43:05,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:43:05,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:43:05,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:43:05,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:43:05,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:43:05,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:43:05,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:43:05,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:43:05,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:43:05,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:43:05,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:43:05,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:43:05,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:43:05,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:43:05,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:43:05,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:43:05,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:43:05,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:43:05,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:43:05,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:43:05,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:43:05,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:43:05,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:43:05,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:43:05,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:43:05,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:43:05,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:43:05,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:43:05,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:43:05,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:43:05,172 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:43:05,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:43:05,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:43:05,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:43:05,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:43:05,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:43:05,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:43:05,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:43:05,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:43:05,231 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:43:05,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:43:05,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:43:05,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:43:05,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:43:05,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:43:05,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:43:05,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:43:05,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:43:05,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:43:05,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:43:05,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:43:05,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:43:05,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:05,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:43:05,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:43:05,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:43:05,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:43:05,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:43:05,237 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:43:05,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:43:05,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:43:05,238 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_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d [2022-11-20 11:43:05,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:43:05,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:43:05,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:43:05,575 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:43:05,575 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:43:05,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2022-11-20 11:43:08,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:43:09,389 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:43:09,390 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2022-11-20 11:43:09,438 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/data/f9d7f2efb/958100d6693f4205a4f9165e93249b61/FLAG147e6a015 [2022-11-20 11:43:09,457 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/data/f9d7f2efb/958100d6693f4205a4f9165e93249b61 [2022-11-20 11:43:09,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:43:09,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:43:09,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:09,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:43:09,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:43:09,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:09" (1/1) ... [2022-11-20 11:43:09,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5eba25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:09, skipping insertion in model container [2022-11-20 11:43:09,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:09" (1/1) ... [2022-11-20 11:43:09,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:43:09,590 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:43:09,916 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_dc20c9d7-b778-4c4c-8b15-2665506bbb03/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2022-11-20 11:43:09,925 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_dc20c9d7-b778-4c4c-8b15-2665506bbb03/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2022-11-20 11:43:11,185 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,186 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,187 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,188 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,237 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,241 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,243 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,245 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,668 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:43:11,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:43:11,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:43:11,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:43:11,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:43:11,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:43:11,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:43:11,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:43:11,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:43:11,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:43:11,869 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:43:11,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:11,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:12,160 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:43:12,192 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_dc20c9d7-b778-4c4c-8b15-2665506bbb03/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4501,4514] [2022-11-20 11:43:12,192 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_dc20c9d7-b778-4c4c-8b15-2665506bbb03/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i[4561,4574] [2022-11-20 11:43:12,231 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,232 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,233 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,233 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,234 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,240 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,241 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,242 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,243 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 11:43:12,276 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 11:43:12,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 11:43:12,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 11:43:12,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 11:43:12,279 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 11:43:12,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 11:43:12,280 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 11:43:12,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 11:43:12,281 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 11:43:12,301 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 11:43:12,356 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,357 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 11:43:12,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:12,623 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:43:12,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12 WrapperNode [2022-11-20 11:43:12,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:12,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:12,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:43:12,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:43:12,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,819 INFO L138 Inliner]: procedures = 693, calls = 2784, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 832 [2022-11-20 11:43:12,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:12,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:43:12,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:43:12,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:43:12,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:43:12,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:43:12,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:43:12,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:43:12,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (1/1) ... [2022-11-20 11:43:12,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:12,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:12,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:43:12,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:43:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2022-11-20 11:43:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2022-11-20 11:43:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-20 11:43:12,980 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-20 11:43:12,980 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2022-11-20 11:43:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2022-11-20 11:43:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:43:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 11:43:12,981 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 11:43:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:43:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:43:12,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:43:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:43:12,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:43:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:43:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:43:12,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:43:12,984 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 11:43:12,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 11:43:12,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-20 11:43:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2022-11-20 11:43:12,986 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2022-11-20 11:43:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:43:12,986 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:43:12,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:43:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:43:12,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 11:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 11:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 11:43:12,988 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 11:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:43:12,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:43:13,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:43:13,389 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:43:14,740 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:43:14,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:43:14,747 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:43:14,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:14 BoogieIcfgContainer [2022-11-20 11:43:14,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:43:14,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:43:14,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:43:14,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:43:14,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:43:09" (1/3) ... [2022-11-20 11:43:14,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f999e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:14, skipping insertion in model container [2022-11-20 11:43:14,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:12" (2/3) ... [2022-11-20 11:43:14,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f999e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:14, skipping insertion in model container [2022-11-20 11:43:14,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:14" (3/3) ... [2022-11-20 11:43:14,758 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_string_harness.i [2022-11-20 11:43:14,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:43:14,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:43:14,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:43:14,850 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;@733b1a83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:43:14,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:43:14,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:43:14,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:43:14,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:14,868 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:14,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1122645662, now seen corresponding path program 1 times [2022-11-20 11:43:14,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:14,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927465614] [2022-11-20 11:43:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:14,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:16,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:16,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927465614] [2022-11-20 11:43:16,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927465614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:16,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:16,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:43:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560466452] [2022-11-20 11:43:16,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:16,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:43:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:16,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:43:16,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:16,065 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:43:16,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:16,490 INFO L93 Difference]: Finished difference Result 201 states and 264 transitions. [2022-11-20 11:43:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:43:16,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-11-20 11:43:16,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:16,505 INFO L225 Difference]: With dead ends: 201 [2022-11-20 11:43:16,505 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 11:43:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:43:16,518 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 94 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:16,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 101 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:43:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 11:43:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 11:43:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-20 11:43:16,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2022-11-20 11:43:16,590 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 85 [2022-11-20 11:43:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:16,593 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2022-11-20 11:43:16,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:43:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2022-11-20 11:43:16,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 11:43:16,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:16,600 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:16,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:43:16,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1334345696, now seen corresponding path program 1 times [2022-11-20 11:43:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:16,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289576781] [2022-11-20 11:43:16,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:17,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:17,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:17,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289576781] [2022-11-20 11:43:17,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289576781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:17,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:17,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:43:17,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343794530] [2022-11-20 11:43:17,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:17,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:43:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:43:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:43:17,550 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:43:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:18,008 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2022-11-20 11:43:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:43:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2022-11-20 11:43:18,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:18,012 INFO L225 Difference]: With dead ends: 155 [2022-11-20 11:43:18,012 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 11:43:18,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:18,014 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 113 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:18,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 230 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:43:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 11:43:18,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-20 11:43:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.140625) internal successors, (73), 66 states have internal predecessors, (73), 25 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2022-11-20 11:43:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2022-11-20 11:43:18,028 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 85 [2022-11-20 11:43:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:18,028 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2022-11-20 11:43:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:43:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2022-11-20 11:43:18,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:43:18,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:18,031 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:18,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:43:18,031 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:18,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:18,032 INFO L85 PathProgramCache]: Analyzing trace with hash 50703397, now seen corresponding path program 1 times [2022-11-20 11:43:18,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:18,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110336176] [2022-11-20 11:43:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:19,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110336176] [2022-11-20 11:43:19,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110336176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:19,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:19,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:43:19,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94310471] [2022-11-20 11:43:19,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:19,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:43:19,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:19,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:43:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:43:19,244 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:19,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:19,906 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2022-11-20 11:43:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:43:19,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2022-11-20 11:43:19,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:19,908 INFO L225 Difference]: With dead ends: 113 [2022-11-20 11:43:19,908 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 11:43:19,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:43:19,909 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 119 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:19,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 382 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:43:19,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 11:43:19,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2022-11-20 11:43:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 73 states have internal predecessors, (79), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-11-20 11:43:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2022-11-20 11:43:19,927 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 87 [2022-11-20 11:43:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:19,929 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2022-11-20 11:43:19,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2022-11-20 11:43:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:43:19,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:19,936 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:43:19,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 976473645, now seen corresponding path program 1 times [2022-11-20 11:43:19,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:19,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502869775] [2022-11-20 11:43:19,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 11:43:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502869775] [2022-11-20 11:43:22,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502869775] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:43:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729021283] [2022-11-20 11:43:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:43:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:22,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:43:22,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:43:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:23,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-20 11:43:23,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:23,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:43:23,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 11:43:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:24,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:43:24,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729021283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:24,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:43:24,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2022-11-20 11:43:24,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947312616] [2022-11-20 11:43:24,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:43:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:43:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:43:24,329 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-20 11:43:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:24,659 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2022-11-20 11:43:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:43:24,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2022-11-20 11:43:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:24,662 INFO L225 Difference]: With dead ends: 196 [2022-11-20 11:43:24,662 INFO L226 Difference]: Without dead ends: 127 [2022-11-20 11:43:24,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:43:24,670 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 32 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:24,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1545 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 145 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-11-20 11:43:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-20 11:43:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2022-11-20 11:43:24,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.144578313253012) internal successors, (95), 86 states have internal predecessors, (95), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2022-11-20 11:43:24,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2022-11-20 11:43:24,693 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 91 [2022-11-20 11:43:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:24,696 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2022-11-20 11:43:24,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-20 11:43:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2022-11-20 11:43:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:43:24,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:24,702 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:24,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:43:24,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-20 11:43:24,912 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:24,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1234639083, now seen corresponding path program 1 times [2022-11-20 11:43:24,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:24,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118232028] [2022-11-20 11:43:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:24,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:25,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118232028] [2022-11-20 11:43:25,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118232028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:25,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:25,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:43:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951285853] [2022-11-20 11:43:25,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:25,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:43:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:43:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:43:25,996 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:26,464 INFO L93 Difference]: Finished difference Result 183 states and 222 transitions. [2022-11-20 11:43:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:43:26,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2022-11-20 11:43:26,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:26,467 INFO L225 Difference]: With dead ends: 183 [2022-11-20 11:43:26,467 INFO L226 Difference]: Without dead ends: 118 [2022-11-20 11:43:26,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:43:26,468 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 59 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:26,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 191 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:43:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-20 11:43:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-11-20 11:43:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 26 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2022-11-20 11:43:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2022-11-20 11:43:26,480 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 91 [2022-11-20 11:43:26,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:26,481 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2022-11-20 11:43:26,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2022-11-20 11:43:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:43:26,482 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:26,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:26,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:43:26,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:26,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:26,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2058076652, now seen corresponding path program 1 times [2022-11-20 11:43:26,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:26,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819247716] [2022-11-20 11:43:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:26,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:27,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,324 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-20 11:43:28,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:28,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819247716] [2022-11-20 11:43:28,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819247716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:28,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:28,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:43:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655212512] [2022-11-20 11:43:28,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:43:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:28,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:43:28,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:43:28,326 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:29,427 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2022-11-20 11:43:29,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:43:29,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2022-11-20 11:43:29,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:29,430 INFO L225 Difference]: With dead ends: 131 [2022-11-20 11:43:29,430 INFO L226 Difference]: Without dead ends: 129 [2022-11-20 11:43:29,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:43:29,431 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 100 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:29,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 574 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:43:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-20 11:43:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2022-11-20 11:43:29,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 80 states have internal predecessors, (87), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2022-11-20 11:43:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2022-11-20 11:43:29,461 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 93 [2022-11-20 11:43:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:29,461 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2022-11-20 11:43:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-20 11:43:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2022-11-20 11:43:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 11:43:29,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:29,464 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-11-20 11:43:29,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:43:29,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1315799824, now seen corresponding path program 1 times [2022-11-20 11:43:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:29,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007889638] [2022-11-20 11:43:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:29,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:43:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:43:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:43:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:43:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:43:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:43:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:43:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 11:43:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:43:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:43:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 11:43:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-20 11:43:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007889638] [2022-11-20 11:43:31,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007889638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:43:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971461896] [2022-11-20 11:43:31,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:31,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:43:31,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:31,812 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:43:31,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:43:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:32,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 119 conjunts are in the unsatisfiable core [2022-11-20 11:43:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:43:32,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 11:43:35,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:43:35,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 72 [2022-11-20 11:43:35,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2022-11-20 11:43:38,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:43:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:43:38,935 INFO L321 Elim1Store]: treesize reduction 120, result has 17.2 percent of original size [2022-11-20 11:43:38,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 139 treesize of output 104 [2022-11-20 11:43:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:43:39,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:43:55,275 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 41 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:44:01,638 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:44:08,153 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:44:14,546 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 43 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:44:14,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:44:14,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 90 [2022-11-20 11:44:15,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971461896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:44:15,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:44:15,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 36] total 46 [2022-11-20 11:44:15,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716106859] [2022-11-20 11:44:15,160 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:44:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 11:44:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 11:44:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3574, Unknown=0, NotChecked=0, Total=3782 [2022-11-20 11:44:15,163 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2022-11-20 11:44:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:16,701 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2022-11-20 11:44:16,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:44:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) Word has length 103 [2022-11-20 11:44:16,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:16,704 INFO L225 Difference]: With dead ends: 124 [2022-11-20 11:44:16,704 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:44:16,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=295, Invalid=5107, Unknown=0, NotChecked=0, Total=5402 [2022-11-20 11:44:16,707 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:16,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 345 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 569 Invalid, 0 Unknown, 133 Unchecked, 0.7s Time] [2022-11-20 11:44:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:44:16,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:44:16,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:16,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:44:16,708 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2022-11-20 11:44:16,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:16,709 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:44:16,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2022-11-20 11:44:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:44:16,709 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:44:16,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:44:16,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:44:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:44:16,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:44:17,100 INFO L895 garLoopResultBuilder]: At program point L6815(lines 6806 6816) the Hoare annotation is: (and (<= (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 1) |#StackHeapBarrier|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base| 0)) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (<= (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 1) |#StackHeapBarrier|) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 0)) [2022-11-20 11:44:17,100 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2022-11-20 11:44:17,101 INFO L895 garLoopResultBuilder]: At program point L6810(line 6810) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (<= (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 1) |#StackHeapBarrier|)) [2022-11-20 11:44:17,101 INFO L899 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2022-11-20 11:44:17,101 INFO L895 garLoopResultBuilder]: At program point L6807(line 6807) the Hoare annotation is: (let ((.cse0 (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)))) (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (or .cse0 (<= 0 (+ (div |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551616) (div (+ (* (- 1) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|) 15) 18446744073709551616)))) (or (<= 0 (+ (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616) (div (+ 15 (* (- 1) |ensure_string_is_allocated_bounded_length_~len~1#1|)) 18446744073709551616))) .cse0) (= |old(#valid)| |#valid|))) [2022-11-20 11:44:17,101 INFO L899 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2022-11-20 11:44:17,101 INFO L895 garLoopResultBuilder]: At program point L6810-2(line 6810) the Hoare annotation is: (and (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (not (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 0)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| 16)) (<= (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| 1) |#StackHeapBarrier|)) [2022-11-20 11:44:17,101 INFO L899 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2022-11-20 11:44:17,101 INFO L895 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-11-20 11:44:17,101 INFO L895 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L895 garLoopResultBuilder]: At program point L6801(line 6801) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#memory_real)| |#memory_real|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= 16 |ensure_string_is_allocated_bounded_length_~max_size#1|)) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#valid)| |#valid|)) [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L895 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L895 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |bounded_malloc_#in~size| bounded_malloc_~size) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2022-11-20 11:44:17,102 INFO L899 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L902 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2022-11-20 11:44:17,103 INFO L902 garLoopResultBuilder]: At program point aws_string_bytesENTRY(lines 6242 6246) the Hoare annotation is: true [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point aws_string_bytesEXIT(lines 6242 6246) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point aws_string_bytesFINAL(lines 6242 6246) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L902 garLoopResultBuilder]: At program point L6244-1(line 6244) the Hoare annotation is: true [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point L6244-2(line 6244) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L902 garLoopResultBuilder]: At program point L6244(line 6244) the Hoare annotation is: true [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2022-11-20 11:44:17,103 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L902 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2022-11-20 11:44:17,104 INFO L902 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L902 garLoopResultBuilder]: At program point aws_byte_cursor_is_validENTRY(lines 7368 7372) the Hoare annotation is: true [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L7371(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,104 INFO L899 garLoopResultBuilder]: For program point L7371-5(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-4(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-2(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-8(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-6(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point aws_byte_cursor_is_validEXIT(lines 7368 7372) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-11(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7371-10(line 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7370(lines 7370 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point L7370-2(lines 7370 7371) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point aws_byte_cursor_is_validFINAL(lines 7368 7372) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2022-11-20 11:44:17,105 INFO L902 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point L9538-1(line 9538) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L895 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point L9518-1(line 9518) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L899 garLoopResultBuilder]: For program point L8240-2(line 8240) no Hoare annotation was computed. [2022-11-20 11:44:17,106 INFO L895 garLoopResultBuilder]: At program point L8240-1(line 8240) the Hoare annotation is: false [2022-11-20 11:44:17,106 INFO L895 garLoopResultBuilder]: At program point L9518-2(lines 9516 9519) the Hoare annotation is: false [2022-11-20 11:44:17,106 INFO L895 garLoopResultBuilder]: At program point L8240(line 8240) the Hoare annotation is: false [2022-11-20 11:44:17,107 INFO L899 garLoopResultBuilder]: For program point L8236-1(line 8236) no Hoare annotation was computed. [2022-11-20 11:44:17,107 INFO L895 garLoopResultBuilder]: At program point L8236(line 8236) the Hoare annotation is: false [2022-11-20 11:44:17,107 INFO L895 garLoopResultBuilder]: At program point L9518(line 9518) the Hoare annotation is: false [2022-11-20 11:44:17,107 INFO L895 garLoopResultBuilder]: At program point L9541(line 9541) the Hoare annotation is: false [2022-11-20 11:44:17,108 INFO L895 garLoopResultBuilder]: At program point L9541-1(line 9541) the Hoare annotation is: false [2022-11-20 11:44:17,108 INFO L899 garLoopResultBuilder]: For program point L9541-2(line 9541) no Hoare annotation was computed. [2022-11-20 11:44:17,109 INFO L899 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2022-11-20 11:44:17,109 INFO L895 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2022-11-20 11:44:17,109 INFO L895 garLoopResultBuilder]: At program point L9543(line 9543) the Hoare annotation is: false [2022-11-20 11:44:17,109 INFO L899 garLoopResultBuilder]: For program point L9543-1(line 9543) no Hoare annotation was computed. [2022-11-20 11:44:17,109 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:44:17,109 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:44:17,110 INFO L899 garLoopResultBuilder]: For program point L9537(lines 9537 9545) no Hoare annotation was computed. [2022-11-20 11:44:17,110 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:44:17,110 INFO L899 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2022-11-20 11:44:17,110 INFO L895 garLoopResultBuilder]: At program point L9517(line 9517) the Hoare annotation is: false [2022-11-20 11:44:17,110 INFO L895 garLoopResultBuilder]: At program point L9517-1(line 9517) the Hoare annotation is: false [2022-11-20 11:44:17,110 INFO L899 garLoopResultBuilder]: For program point L9517-2(line 9517) no Hoare annotation was computed. [2022-11-20 11:44:17,110 INFO L895 garLoopResultBuilder]: At program point L8241(lines 8235 8242) the Hoare annotation is: false [2022-11-20 11:44:17,111 INFO L902 garLoopResultBuilder]: At program point L9546(line 9546) the Hoare annotation is: true [2022-11-20 11:44:17,111 INFO L899 garLoopResultBuilder]: For program point L9542-1(line 9542) no Hoare annotation was computed. [2022-11-20 11:44:17,111 INFO L895 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2022-11-20 11:44:17,111 INFO L895 garLoopResultBuilder]: At program point L9540(line 9540) the Hoare annotation is: false [2022-11-20 11:44:17,111 INFO L895 garLoopResultBuilder]: At program point L9540-1(line 9540) the Hoare annotation is: false [2022-11-20 11:44:17,111 INFO L902 garLoopResultBuilder]: At program point L9538(line 9538) the Hoare annotation is: true [2022-11-20 11:44:17,112 INFO L899 garLoopResultBuilder]: For program point L9540-2(line 9540) no Hoare annotation was computed. [2022-11-20 11:44:17,112 INFO L895 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2022-11-20 11:44:17,112 INFO L895 garLoopResultBuilder]: At program point L9542(line 9542) the Hoare annotation is: false [2022-11-20 11:44:17,112 INFO L899 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2022-11-20 11:44:17,112 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2022-11-20 11:44:17,112 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2022-11-20 11:44:17,112 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2022-11-20 11:44:17,113 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2022-11-20 11:44:17,113 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2022-11-20 11:44:17,113 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2022-11-20 11:44:17,116 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:17,118 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:44:17,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:44:17 BoogieIcfgContainer [2022-11-20 11:44:17,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:44:17,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:44:17,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:44:17,131 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:44:17,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:14" (3/4) ... [2022-11-20 11:44:17,135 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:44:17,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2022-11-20 11:44:17,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2022-11-20 11:44:17,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_cursor_is_valid [2022-11-20 11:44:17,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2022-11-20 11:44:17,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2022-11-20 11:44:17,152 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 127 nodes and edges [2022-11-20 11:44:17,154 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2022-11-20 11:44:17,155 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-20 11:44:17,156 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:44:17,157 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 11:44:17,157 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 11:44:17,158 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:44:17,159 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:44:17,191 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\result + 1 <= unknown-#StackHeapBarrier-unknown && (\old(max_size) == max_size || 16 == max_size)) && !(str == 0)) && str == 0) && !(\result == 0)) && !(\old(max_size) == 16)) && str + 1 <= unknown-#StackHeapBarrier-unknown) && \result == 0 [2022-11-20 11:44:17,850 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:44:17,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:44:17,851 INFO L158 Benchmark]: Toolchain (without parser) took 68389.25ms. Allocated memory was 144.7MB in the beginning and 604.0MB in the end (delta: 459.3MB). Free memory was 90.5MB in the beginning and 217.5MB in the end (delta: -127.1MB). Peak memory consumption was 334.2MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,851 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 113.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:44:17,851 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3159.66ms. Allocated memory was 144.7MB in the beginning and 224.4MB in the end (delta: 79.7MB). Free memory was 90.5MB in the beginning and 124.0MB in the end (delta: -33.6MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 196.29ms. Allocated memory is still 224.4MB. Free memory was 124.0MB in the beginning and 112.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,852 INFO L158 Benchmark]: Boogie Preprocessor took 62.95ms. Allocated memory is still 224.4MB. Free memory was 112.5MB in the beginning and 105.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,852 INFO L158 Benchmark]: RCFGBuilder took 1864.20ms. Allocated memory is still 224.4MB. Free memory was 105.2MB in the beginning and 98.4MB in the end (delta: 6.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,853 INFO L158 Benchmark]: TraceAbstraction took 62378.95ms. Allocated memory was 224.4MB in the beginning and 604.0MB in the end (delta: 379.6MB). Free memory was 97.4MB in the beginning and 347.6MB in the end (delta: -250.2MB). Peak memory consumption was 129.4MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,853 INFO L158 Benchmark]: Witness Printer took 719.23ms. Allocated memory is still 604.0MB. Free memory was 347.6MB in the beginning and 217.5MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. Max. memory is 16.1GB. [2022-11-20 11:44:17,855 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 144.7MB. Free memory is still 113.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3159.66ms. Allocated memory was 144.7MB in the beginning and 224.4MB in the end (delta: 79.7MB). Free memory was 90.5MB in the beginning and 124.0MB in the end (delta: -33.6MB). Peak memory consumption was 88.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 196.29ms. Allocated memory is still 224.4MB. Free memory was 124.0MB in the beginning and 112.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.95ms. Allocated memory is still 224.4MB. Free memory was 112.5MB in the beginning and 105.2MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1864.20ms. Allocated memory is still 224.4MB. Free memory was 105.2MB in the beginning and 98.4MB in the end (delta: 6.7MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * TraceAbstraction took 62378.95ms. Allocated memory was 224.4MB in the beginning and 604.0MB in the end (delta: 379.6MB). Free memory was 97.4MB in the beginning and 347.6MB in the end (delta: -250.2MB). Peak memory consumption was 129.4MB. Max. memory is 16.1GB. * Witness Printer took 719.23ms. Allocated memory is still 604.0MB. Free memory was 347.6MB in the beginning and 217.5MB in the end (delta: 130.0MB). Peak memory consumption was 130.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.3s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 597 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 566 mSDsluCounter, 3368 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 217 IncrementalHoareTripleChecker+Unchecked, 2892 mSDsCounter, 233 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2681 IncrementalHoareTripleChecker+Invalid, 3131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 233 mSolverCounterUnsat, 476 mSDtfsCounter, 2681 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 506 GetRequests, 343 SyntacticMatches, 4 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1346 ImplicationChecksByTransitivity, 41.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=4, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 112 PreInvPairs, 117 NumberOfFragments, 264 HoareAnnotationTreeSize, 112 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 829 NumberOfCodeBlocks, 829 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 820 ConstructedInterpolants, 55 QuantifiedInterpolants, 6110 SizeOfPredicates, 53 NumberOfNonLiveVariables, 5353 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 398/455 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9516]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8235]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: ((((((\result + 1 <= unknown-#StackHeapBarrier-unknown && (\old(max_size) == max_size || 16 == max_size)) && !(str == 0)) && str == 0) && !(\result == 0)) && !(\old(max_size) == 16)) && str + 1 <= unknown-#StackHeapBarrier-unknown) && \result == 0 - InvariantResult [Line: 9546]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 11:44:17,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc20c9d7-b778-4c4c-8b15-2665506bbb03/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE