./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 00:59:06,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 00:59:06,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 00:59:06,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 00:59:06,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 00:59:06,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 00:59:06,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 00:59:06,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 00:59:06,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 00:59:06,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 00:59:06,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 00:59:06,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 00:59:06,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 00:59:06,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 00:59:06,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 00:59:06,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 00:59:06,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 00:59:06,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 00:59:06,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 00:59:06,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 00:59:06,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 00:59:06,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 00:59:06,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 00:59:06,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 00:59:06,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 00:59:06,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 00:59:06,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 00:59:06,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 00:59:06,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 00:59:06,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 00:59:06,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 00:59:06,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 00:59:06,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 00:59:06,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 00:59:06,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 00:59:06,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 00:59:06,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 00:59:06,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 00:59:06,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 00:59:06,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 00:59:06,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 00:59:06,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 00:59:06,360 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 00:59:06,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 00:59:06,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 00:59:06,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 00:59:06,361 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 00:59:06,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 00:59:06,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 00:59:06,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 00:59:06,362 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 00:59:06,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 00:59:06,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 00:59:06,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 00:59:06,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 00:59:06,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 00:59:06,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 00:59:06,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 00:59:06,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 00:59:06,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 00:59:06,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 00:59:06,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 00:59:06,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 00:59:06,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:59:06,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 00:59:06,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 00:59:06,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 00:59:06,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 00:59:06,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 00:59:06,366 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 00:59:06,366 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 00:59:06,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 00:59:06,367 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 00:59:06,367 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52a5b40e07f9d2025e21e89532c54ecb2612af1d6384644534b1ef79f7198c6a [2021-12-18 00:59:06,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 00:59:06,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 00:59:06,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 00:59:06,547 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 00:59:06,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 00:59:06,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2021-12-18 00:59:06,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441cf8336/4f1654a4f9b643cebe2a4782f509ad69/FLAGee3d1245a [2021-12-18 00:59:07,116 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 00:59:07,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i [2021-12-18 00:59:07,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441cf8336/4f1654a4f9b643cebe2a4782f509ad69/FLAGee3d1245a [2021-12-18 00:59:07,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/441cf8336/4f1654a4f9b643cebe2a4782f509ad69 [2021-12-18 00:59:07,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 00:59:07,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 00:59:07,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 00:59:07,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 00:59:07,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 00:59:07,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:59:07" (1/1) ... [2021-12-18 00:59:07,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224a20ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:07, skipping insertion in model container [2021-12-18 00:59:07,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:59:07" (1/1) ... [2021-12-18 00:59:07,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 00:59:07,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 00:59:07,823 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2021-12-18 00:59:07,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2021-12-18 00:59:08,223 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,224 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,238 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,239 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:59:08,404 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:59:08,404 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:59:08,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:59:08,406 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:59:08,406 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:59:08,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:59:08,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:59:08,407 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:59:08,408 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:59:08,494 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:59:08,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:59:08,536 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 00:59:08,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4500,4513] [2021-12-18 00:59:08,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_push_front_harness.i[4560,4573] [2021-12-18 00:59:08,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,587 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,588 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,589 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,593 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,603 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:59:08,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:59:08,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:59:08,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:59:08,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:59:08,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:59:08,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:59:08,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:59:08,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:59:08,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:59:08,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:59:08,647 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:59:08,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:59:08,762 INFO L208 MainTranslator]: Completed translation [2021-12-18 00:59:08,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08 WrapperNode [2021-12-18 00:59:08,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 00:59:08,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 00:59:08,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 00:59:08,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 00:59:08,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,867 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 52, calls inlined = 6, statements flattened = 152 [2021-12-18 00:59:08,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 00:59:08,869 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 00:59:08,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 00:59:08,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 00:59:08,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 00:59:08,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 00:59:08,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 00:59:08,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 00:59:08,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (1/1) ... [2021-12-18 00:59:08,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:59:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:59:08,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 00:59:08,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 00:59:09,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 00:59:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 00:59:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 00:59:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-12-18 00:59:09,001 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-12-18 00:59:09,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 00:59:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2021-12-18 00:59:09,002 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2021-12-18 00:59:09,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 00:59:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 00:59:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2021-12-18 00:59:09,003 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2021-12-18 00:59:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 00:59:09,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 00:59:09,003 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 00:59:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 00:59:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 00:59:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 00:59:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 00:59:09,004 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 00:59:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 00:59:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-12-18 00:59:09,005 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-12-18 00:59:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 00:59:09,215 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 00:59:09,216 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 00:59:09,445 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 00:59:09,452 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 00:59:09,453 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 00:59:09,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:59:09 BoogieIcfgContainer [2021-12-18 00:59:09,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 00:59:09,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 00:59:09,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 00:59:09,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 00:59:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:59:07" (1/3) ... [2021-12-18 00:59:09,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bba60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:59:09, skipping insertion in model container [2021-12-18 00:59:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:59:08" (2/3) ... [2021-12-18 00:59:09,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bba60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:59:09, skipping insertion in model container [2021-12-18 00:59:09,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:59:09" (3/3) ... [2021-12-18 00:59:09,460 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_front_harness.i [2021-12-18 00:59:09,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 00:59:09,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 00:59:09,495 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 00:59:09,500 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 00:59:09,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 00:59:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 68 states have internal predecessors, (86), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-12-18 00:59:09,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-18 00:59:09,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:09,532 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:09,532 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:09,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:09,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2111829670, now seen corresponding path program 1 times [2021-12-18 00:59:09,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981498677] [2021-12-18 00:59:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:09,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 00:59:09,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 00:59:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 00:59:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:59:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 00:59:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 00:59:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:59:10,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981498677] [2021-12-18 00:59:10,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981498677] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:10,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:59:10,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:59:10,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668968843] [2021-12-18 00:59:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:10,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:59:10,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:10,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:59:10,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:59:10,065 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 68 states have internal predecessors, (86), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:10,132 INFO L93 Difference]: Finished difference Result 204 states and 302 transitions. [2021-12-18 00:59:10,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:59:10,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2021-12-18 00:59:10,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:10,139 INFO L225 Difference]: With dead ends: 204 [2021-12-18 00:59:10,139 INFO L226 Difference]: Without dead ends: 103 [2021-12-18 00:59:10,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:59:10,144 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 3 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:10,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 400 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:59:10,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-12-18 00:59:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-12-18 00:59:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 67 states have internal predecessors, (81), 28 states have call successors, (28), 7 states have call predecessors, (28), 7 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-18 00:59:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 136 transitions. [2021-12-18 00:59:10,173 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 136 transitions. Word has length 74 [2021-12-18 00:59:10,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:10,174 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 136 transitions. [2021-12-18 00:59:10,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 136 transitions. [2021-12-18 00:59:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-18 00:59:10,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:10,176 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:10,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 00:59:10,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:10,177 INFO L85 PathProgramCache]: Analyzing trace with hash 358576094, now seen corresponding path program 1 times [2021-12-18 00:59:10,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:10,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195708829] [2021-12-18 00:59:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:10,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:10,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 00:59:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-18 00:59:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 00:59:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:59:10,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-18 00:59:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 00:59:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 00:59:10,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195708829] [2021-12-18 00:59:10,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195708829] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:59:10,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485489576] [2021-12-18 00:59:10,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:10,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:59:10,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:59:10,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:59:10,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 00:59:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:10,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-18 00:59:10,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:59:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 00:59:10,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:59:10,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485489576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:10,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:59:10,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 11 [2021-12-18 00:59:10,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827816220] [2021-12-18 00:59:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:10,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:59:10,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:59:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:59:10,800 INFO L87 Difference]: Start difference. First operand 102 states and 136 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 00:59:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:10,997 INFO L93 Difference]: Finished difference Result 194 states and 261 transitions. [2021-12-18 00:59:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 00:59:10,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 74 [2021-12-18 00:59:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:11,000 INFO L225 Difference]: With dead ends: 194 [2021-12-18 00:59:11,000 INFO L226 Difference]: Without dead ends: 106 [2021-12-18 00:59:11,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:59:11,002 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 137 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:11,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 629 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:59:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-18 00:59:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2021-12-18 00:59:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-12-18 00:59:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 139 transitions. [2021-12-18 00:59:11,012 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 139 transitions. Word has length 74 [2021-12-18 00:59:11,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:11,012 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 139 transitions. [2021-12-18 00:59:11,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 00:59:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 139 transitions. [2021-12-18 00:59:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-18 00:59:11,013 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:11,014 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:11,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 00:59:11,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:59:11,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash 87330846, now seen corresponding path program 1 times [2021-12-18 00:59:11,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:11,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730885454] [2021-12-18 00:59:11,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:11,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 00:59:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:59:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:59:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-18 00:59:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 00:59:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 00:59:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 00:59:11,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:11,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730885454] [2021-12-18 00:59:11,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730885454] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:59:11,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321876905] [2021-12-18 00:59:11,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:11,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:59:11,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:59:11,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:59:11,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 00:59:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:11,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-18 00:59:11,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:59:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 00:59:11,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:59:11,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321876905] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:11,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:59:11,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 12 [2021-12-18 00:59:11,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352088464] [2021-12-18 00:59:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:11,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 00:59:11,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 00:59:11,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:59:11,829 INFO L87 Difference]: Start difference. First operand 104 states and 139 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 00:59:12,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:12,034 INFO L93 Difference]: Finished difference Result 199 states and 268 transitions. [2021-12-18 00:59:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 00:59:12,035 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 76 [2021-12-18 00:59:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:12,036 INFO L225 Difference]: With dead ends: 199 [2021-12-18 00:59:12,036 INFO L226 Difference]: Without dead ends: 109 [2021-12-18 00:59:12,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:59:12,038 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 140 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:12,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 734 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:59:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-18 00:59:12,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2021-12-18 00:59:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 68 states have (on average 1.2205882352941178) internal successors, (83), 70 states have internal predecessors, (83), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-12-18 00:59:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 140 transitions. [2021-12-18 00:59:12,046 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 140 transitions. Word has length 76 [2021-12-18 00:59:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:12,047 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 140 transitions. [2021-12-18 00:59:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-18 00:59:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 140 transitions. [2021-12-18 00:59:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 00:59:12,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:12,048 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:12,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 00:59:12,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-18 00:59:12,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 958884107, now seen corresponding path program 1 times [2021-12-18 00:59:12,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:12,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354562514] [2021-12-18 00:59:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:12,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:59:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 00:59:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 00:59:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 00:59:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:59:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 00:59:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:59:12,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354562514] [2021-12-18 00:59:12,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354562514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:12,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:59:12,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 00:59:12,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692152641] [2021-12-18 00:59:12,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:12,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:59:12,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:12,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:59:12,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:59:12,443 INFO L87 Difference]: Start difference. First operand 105 states and 140 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 00:59:12,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:12,503 INFO L93 Difference]: Finished difference Result 215 states and 295 transitions. [2021-12-18 00:59:12,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:59:12,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2021-12-18 00:59:12,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:12,507 INFO L225 Difference]: With dead ends: 215 [2021-12-18 00:59:12,507 INFO L226 Difference]: Without dead ends: 124 [2021-12-18 00:59:12,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:59:12,509 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 52 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:12,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 683 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:59:12,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-18 00:59:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 113. [2021-12-18 00:59:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.25) internal successors, (95), 78 states have internal predecessors, (95), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-12-18 00:59:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2021-12-18 00:59:12,531 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 78 [2021-12-18 00:59:12,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:12,532 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2021-12-18 00:59:12,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 00:59:12,532 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2021-12-18 00:59:12,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 00:59:12,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:12,535 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:12,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 00:59:12,535 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:12,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:12,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1160708041, now seen corresponding path program 1 times [2021-12-18 00:59:12,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:12,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147131246] [2021-12-18 00:59:12,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:12,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:59:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 00:59:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 00:59:12,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 00:59:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:59:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 00:59:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:59:12,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:12,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147131246] [2021-12-18 00:59:12,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147131246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:12,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:59:12,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:59:12,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966528573] [2021-12-18 00:59:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:12,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:59:12,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:59:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:59:12,658 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:12,682 INFO L93 Difference]: Finished difference Result 223 states and 306 transitions. [2021-12-18 00:59:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:59:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-12-18 00:59:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:12,683 INFO L225 Difference]: With dead ends: 223 [2021-12-18 00:59:12,683 INFO L226 Difference]: Without dead ends: 124 [2021-12-18 00:59:12,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:59:12,684 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 14 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:12,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 406 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:59:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-18 00:59:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 113. [2021-12-18 00:59:12,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.236842105263158) internal successors, (94), 78 states have internal predecessors, (94), 28 states have call successors, (28), 7 states have call predecessors, (28), 8 states have return successors, (29), 27 states have call predecessors, (29), 27 states have call successors, (29) [2021-12-18 00:59:12,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2021-12-18 00:59:12,693 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 78 [2021-12-18 00:59:12,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:12,693 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2021-12-18 00:59:12,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:12,693 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2021-12-18 00:59:12,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-18 00:59:12,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:59:12,695 INFO L514 BasicCegarLoop]: 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] [2021-12-18 00:59:12,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 00:59:12,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:59:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:59:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1594437127, now seen corresponding path program 1 times [2021-12-18 00:59:12,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:59:12,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22211428] [2021-12-18 00:59:12,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:59:12,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:59:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:59:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:59:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 00:59:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:59:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 00:59:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 00:59:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 00:59:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:59:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 00:59:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:59:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:59:12,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:59:12,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22211428] [2021-12-18 00:59:12,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22211428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:59:12,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:59:12,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:59:12,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464180240] [2021-12-18 00:59:12,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:59:12,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:59:12,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:59:12,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:59:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:59:12,796 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:59:12,809 INFO L93 Difference]: Finished difference Result 143 states and 186 transitions. [2021-12-18 00:59:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:59:12,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2021-12-18 00:59:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:59:12,810 INFO L225 Difference]: With dead ends: 143 [2021-12-18 00:59:12,810 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 00:59:12,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:59:12,811 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:59:12,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 96 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:59:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 00:59:12,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 00:59:12,812 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) [2021-12-18 00:59:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 00:59:12,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-12-18 00:59:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:59:12,812 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 00:59:12,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 00:59:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 00:59:12,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 00:59:12,814 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 00:59:12,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 00:59:12,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validFINAL(lines 4715 4719) no Hoare annotation was computed. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_next_is_validEXIT(lines 4715 4719) no Hoare annotation was computed. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point L4718(line 4718) no Hoare annotation was computed. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point L4718-3(line 4718) no Hoare annotation was computed. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point L4718-2(line 4718) no Hoare annotation was computed. [2021-12-18 00:59:12,904 INFO L858 garLoopResultBuilder]: For program point L4718-5(line 4718) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_next_is_validENTRY(lines 4715 4719) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validFINAL(lines 4726 4730) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_node_prev_is_validEXIT(lines 4726 4730) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L4729-2(line 4729) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L4729-3(line 4729) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L4729(line 4729) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L4729-5(line 4729) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_node_prev_is_validENTRY(lines 4726 4730) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point L4923(line 4923) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L861 garLoopResultBuilder]: At program point L4922(line 4922) the Hoare annotation is: true [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point L4923-1(line 4923) no Hoare annotation was computed. [2021-12-18 00:59:12,905 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeFINAL(lines 4909 4924) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4920-1(line 4920) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4921-2(line 4921) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4920-2(line 4920) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4921(line 4921) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4922-1(line 4922) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4920(line 4920) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4921-1(line 4921) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4922-2(line 4922) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4912-1(line 4912) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4912-2(line 4912) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4913(lines 4913 4915) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point L4912(line 4912) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4913-1(lines 4913 4915) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_insert_beforeENTRY(lines 4909 4924) the Hoare annotation is: true [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_insert_beforeEXIT(lines 4909 4924) no Hoare annotation was computed. [2021-12-18 00:59:12,906 INFO L854 garLoopResultBuilder]: At program point L4990(line 4990) the Hoare annotation is: (and (= |ULTIMATE.start_aws_linked_list_push_front_~list#1.offset| 0) (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.offset| 0) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (< 0 |#StackHeapBarrier|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2021-12-18 00:59:12,906 INFO L858 garLoopResultBuilder]: For program point L4994-1(line 4994) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L4990-1(line 4990) the Hoare annotation is: (and (= |ULTIMATE.start_aws_linked_list_push_front_#t~ret402#1| 0) (< 1 |ULTIMATE.start_aws_linked_list_push_front_~node#1.base|) (< 0 |#StackHeapBarrier|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L7389-1(line 7389) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L4990-2(line 4990) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L7389(line 7389) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L6754(lines 6754 6778) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L4995(line 4995) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L4995-1(line 4995) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L4991(lines 4991 4993) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L7390(line 7390) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L4991-1(lines 4991 4993) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L4995-2(line 4995) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L7386(line 7386) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L7390-1(line 7390) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L7386-2(line 7386) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L7386-1(line 7386) the Hoare annotation is: false [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L7374(lines 7374 7391) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L858 garLoopResultBuilder]: For program point L6767-4(lines 6767 6774) no Hoare annotation was computed. [2021-12-18 00:59:12,907 INFO L854 garLoopResultBuilder]: At program point L6767-3(lines 6767 6774) the Hoare annotation is: (and (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.offset| 0) (< 0 |#StackHeapBarrier|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L6767-2(lines 6767 6774) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L6755-1(line 6755) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L4996-1(line 4996) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L6755(line 6755) the Hoare annotation is: (and (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.offset| 0) (< 0 |#StackHeapBarrier|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L4996(line 4996) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L7387-1(line 7387) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L7387(line 7387) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L7387-2(line 7387) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L6756-1(line 6756) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L6756(line 6756) the Hoare annotation is: (and (= |ULTIMATE.start_aws_linked_list_push_front_harness_~#list~0#1.offset| 0) (< 0 |#StackHeapBarrier|) (< 1 |ULTIMATE.start_aws_linked_list_push_front_harness_~#to_add~0#1.base|)) [2021-12-18 00:59:12,908 INFO L861 garLoopResultBuilder]: At program point L7392(line 7392) the Hoare annotation is: true [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L7388-2(line 7388) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L7388-1(line 7388) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L4989(lines 4989 4997) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L7388(line 7388) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L854 garLoopResultBuilder]: At program point L4994(line 4994) the Hoare annotation is: false [2021-12-18 00:59:12,908 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-18 00:59:12,908 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4734(lines 4734 4738) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4751(lines 4751 4761) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L854 garLoopResultBuilder]: At program point L4764(lines 4731 4765) the Hoare annotation is: (or (not (< 0 |#StackHeapBarrier|)) (= |aws_linked_list_is_valid_aws_linked_list_is_valid_deep_#res#1| 0)) [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694(line 4694) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-3(lines 4694 4695) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4756-1(lines 4756 4761) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-2(line 4694) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L854 garLoopResultBuilder]: At program point L4756(line 4756) the Hoare annotation is: (not (< 0 |#StackHeapBarrier|)) [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-8(lines 4694 4696) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-5(lines 4694 4695) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-6(lines 4694 4696) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-11(lines 4694 4704) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point L4694-9(lines 4694 4697) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_is_validEXIT(lines 4691 4708) no Hoare annotation was computed. [2021-12-18 00:59:12,909 INFO L861 garLoopResultBuilder]: At program point aws_linked_list_is_validENTRY(lines 4691 4708) the Hoare annotation is: true [2021-12-18 00:59:12,909 INFO L858 garLoopResultBuilder]: For program point aws_linked_list_is_validFINAL(lines 4691 4708) no Hoare annotation was computed. [2021-12-18 00:59:12,910 INFO L858 garLoopResultBuilder]: For program point L4750-3(lines 4750 4763) no Hoare annotation was computed. [2021-12-18 00:59:12,910 INFO L854 garLoopResultBuilder]: At program point L4750-2(lines 4750 4763) the Hoare annotation is: (not (< 0 |#StackHeapBarrier|)) [2021-12-18 00:59:12,912 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-18 00:59:12,913 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 00:59:12,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:59:12 BoogieIcfgContainer [2021-12-18 00:59:12,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 00:59:12,923 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 00:59:12,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 00:59:12,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 00:59:12,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:59:09" (3/4) ... [2021-12-18 00:59:12,925 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_next_is_valid [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_node_prev_is_valid [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_insert_before [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-18 00:59:12,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_linked_list_is_valid [2021-12-18 00:59:12,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-12-18 00:59:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-18 00:59:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 00:59:12,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-18 00:59:12,949 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(0 < unknown-#StackHeapBarrier-unknown) || \result == 0 [2021-12-18 00:59:12,965 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 00:59:12,965 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 00:59:12,965 INFO L158 Benchmark]: Toolchain (without parser) took 5390.15ms. Allocated memory was 94.4MB in the beginning and 182.5MB in the end (delta: 88.1MB). Free memory was 54.3MB in the beginning and 39.9MB in the end (delta: 14.5MB). Peak memory consumption was 103.0MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1185.37ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 54.2MB in the beginning and 55.6MB in the end (delta: -1.5MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: Boogie Procedure Inliner took 104.28ms. Allocated memory is still 121.6MB. Free memory was 55.6MB in the beginning and 49.6MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: Boogie Preprocessor took 68.58ms. Allocated memory is still 121.6MB. Free memory was 49.6MB in the beginning and 82.6MB in the end (delta: -33.0MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: RCFGBuilder took 516.39ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 58.1MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,966 INFO L158 Benchmark]: TraceAbstraction took 3467.28ms. Allocated memory was 121.6MB in the beginning and 182.5MB in the end (delta: 60.8MB). Free memory was 57.4MB in the beginning and 48.3MB in the end (delta: 9.1MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,967 INFO L158 Benchmark]: Witness Printer took 42.31ms. Allocated memory is still 182.5MB. Free memory was 48.3MB in the beginning and 39.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 00:59:12,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 65.6MB in the beginning and 65.6MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1185.37ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 54.2MB in the beginning and 55.6MB in the end (delta: -1.5MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 104.28ms. Allocated memory is still 121.6MB. Free memory was 55.6MB in the beginning and 49.6MB in the end (delta: 6.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.58ms. Allocated memory is still 121.6MB. Free memory was 49.6MB in the beginning and 82.6MB in the end (delta: -33.0MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * RCFGBuilder took 516.39ms. Allocated memory is still 121.6MB. Free memory was 82.6MB in the beginning and 58.1MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3467.28ms. Allocated memory was 121.6MB in the beginning and 182.5MB in the end (delta: 60.8MB). Free memory was 57.4MB in the beginning and 48.3MB in the end (delta: 9.1MB). Peak memory consumption was 69.6MB. Max. memory is 16.1GB. * Witness Printer took 42.31ms. Allocated memory is still 182.5MB. Free memory was 48.3MB in the beginning and 39.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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 8 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 356 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 352 mSDsluCounter, 2948 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2284 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 424 IncrementalHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 664 mSDtfsCounter, 424 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 262 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 6 MinimizatonAttempts, 29 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 275 PreInvPairs, 283 NumberOfFragments, 106 HoareAnnotationTreeSize, 275 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 140 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 828 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1333 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 358/376 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: 4750]: Loop Invariant Derived loop invariant: !(0 < unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 4731]: Loop Invariant Derived loop invariant: !(0 < unknown-#StackHeapBarrier-unknown) || \result == 0 - InvariantResult [Line: 7392]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6767]: Loop Invariant Derived loop invariant: (list == 0 && 0 < unknown-#StackHeapBarrier-unknown) && 1 < to_add RESULT: Ultimate proved your program to be correct! [2021-12-18 00:59:13,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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