./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_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_string_eq_ignore_case_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 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:23:32,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:23:32,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:23:32,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:23:32,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:23:32,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:23:32,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:23:32,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:23:32,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:23:32,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:23:32,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:23:32,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:23:32,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:23:32,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:23:32,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:23:32,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:23:32,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:23:32,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:23:32,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:23:32,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:23:32,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:23:32,630 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:23:32,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:23:32,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:23:32,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:23:32,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:23:32,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:23:32,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:23:32,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:23:32,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:23:32,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:23:32,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:23:32,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:23:32,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:23:32,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:23:32,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:23:32,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:23:32,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:23:32,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:23:32,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:23:32,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:23:32,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:23:32,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:23:32,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:23:32,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:23:32,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:23:32,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:23:32,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:23:32,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:23:32,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:23:32,666 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:23:32,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:23:32,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:23:32,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:23:32,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:23:32,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:23:32,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:23:32,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:23:32,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:23:32,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:23:32,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:23:32,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:23:32,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:23:32,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:32,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:23:32,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:23:32,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:23:32,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:23:32,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c58e2434ae79fdf5f8dceab88ea2b6ad3f1a1a8bb44e2d930eaf759f64b3d29 [2021-12-18 01:23:32,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:23:32,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:23:32,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:23:32,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:23:32,970 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:23:32,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-12-18 01:23:33,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3edc19b04/5a81c051183f40cc8232cb067edee1c3/FLAGeaec6dd91 [2021-12-18 01:23:33,723 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:23:33,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_string_eq_ignore_case_harness.i [2021-12-18 01:23:33,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3edc19b04/5a81c051183f40cc8232cb067edee1c3/FLAGeaec6dd91 [2021-12-18 01:23:33,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3edc19b04/5a81c051183f40cc8232cb067edee1c3 [2021-12-18 01:23:33,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:23:33,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:23:33,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:33,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:23:33,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:23:33,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:33" (1/1) ... [2021-12-18 01:23:33,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9c1e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:33, skipping insertion in model container [2021-12-18 01:23:33,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:23:33" (1/1) ... [2021-12-18 01:23:33,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:23:33,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:23:34,189 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_string_eq_ignore_case_harness.i[4499,4512] [2021-12-18 01:23:34,198 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_string_eq_ignore_case_harness.i[4559,4572] [2021-12-18 01:23:34,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,001 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,002 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,013 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,016 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,019 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:35,282 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:35,283 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:35,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:35,285 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:35,285 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:35,286 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:35,286 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:35,287 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:35,287 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:35,477 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:35,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:35,655 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:23:35,682 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_string_eq_ignore_case_harness.i[4499,4512] [2021-12-18 01:23:35,683 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_string_eq_ignore_case_harness.i[4559,4572] [2021-12-18 01:23:35,716 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,725 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,726 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,727 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,736 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,775 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 01:23:35,776 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 01:23:35,776 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 01:23:35,783 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 01:23:35,784 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 01:23:35,785 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 01:23:35,786 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 01:23:35,786 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 01:23:35,786 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 01:23:35,787 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 01:23:35,804 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 01:23:35,901 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,906 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 01:23:35,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:23:36,141 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:23:36,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36 WrapperNode [2021-12-18 01:23:36,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:23:36,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:36,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:23:36,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:23:36,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,334 INFO L137 Inliner]: procedures = 681, calls = 2272, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 374 [2021-12-18 01:23:36,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:23:36,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:23:36,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:23:36,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:23:36,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:23:36,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:23:36,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:23:36,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:23:36,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (1/1) ... [2021-12-18 01:23:36,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:23:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:36,437 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 01:23:36,447 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 01:23:36,476 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-18 01:23:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-18 01:23:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2021-12-18 01:23:36,477 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2021-12-18 01:23:36,477 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-18 01:23:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-18 01:23:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 01:23:36,478 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 01:23:36,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:23:36,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 01:23:36,479 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 01:23:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:23:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:23:36,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:23:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:23:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:23:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 01:23:36,481 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 01:23:36,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 01:23:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 01:23:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:23:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 01:23:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 01:23:36,482 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 01:23:36,482 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 01:23:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:23:36,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:23:36,761 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:23:36,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:23:37,034 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:23:37,040 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:23:37,040 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 01:23:37,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:37 BoogieIcfgContainer [2021-12-18 01:23:37,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:23:37,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:23:37,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:23:37,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:23:37,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:23:33" (1/3) ... [2021-12-18 01:23:37,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89450f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:37, skipping insertion in model container [2021-12-18 01:23:37,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:23:36" (2/3) ... [2021-12-18 01:23:37,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89450f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:23:37, skipping insertion in model container [2021-12-18 01:23:37,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:37" (3/3) ... [2021-12-18 01:23:37,050 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_string_eq_ignore_case_harness.i [2021-12-18 01:23:37,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:23:37,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:23:37,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:23:37,110 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 01:23:37,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:23:37,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-18 01:23:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 01:23:37,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:37,134 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-18 01:23:37,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:37,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:37,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1420882534, now seen corresponding path program 1 times [2021-12-18 01:23:37,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:37,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110158951] [2021-12-18 01:23:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:37,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:23:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:23:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 01:23:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-18 01:23:37,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:37,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110158951] [2021-12-18 01:23:37,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110158951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:37,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:37,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 01:23:37,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875536017] [2021-12-18 01:23:37,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:37,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-18 01:23:37,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-18 01:23:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:23:37,783 INFO L87 Difference]: Start difference. First operand has 99 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 66 states have internal predecessors, (83), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:23:37,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:37,816 INFO L93 Difference]: Finished difference Result 193 states and 263 transitions. [2021-12-18 01:23:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-18 01:23:37,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2021-12-18 01:23:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:37,832 INFO L225 Difference]: With dead ends: 193 [2021-12-18 01:23:37,832 INFO L226 Difference]: Without dead ends: 94 [2021-12-18 01:23:37,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-18 01:23:37,846 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:37,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:23:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-18 01:23:37,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-18 01:23:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 62 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-18 01:23:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2021-12-18 01:23:37,911 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 49 [2021-12-18 01:23:37,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:37,914 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2021-12-18 01:23:37,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 01:23:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2021-12-18 01:23:37,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 01:23:37,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:37,924 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-18 01:23:37,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:23:37,925 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:37,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash -206021594, now seen corresponding path program 1 times [2021-12-18 01:23:37,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25544968] [2021-12-18 01:23:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:37,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 01:23:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 01:23:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:23:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 01:23:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 01:23:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-18 01:23:38,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25544968] [2021-12-18 01:23:38,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25544968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:38,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:38,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:23:38,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387694449] [2021-12-18 01:23:38,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:38,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:23:38,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:23:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:23:38,305 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-18 01:23:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:38,455 INFO L93 Difference]: Finished difference Result 174 states and 236 transitions. [2021-12-18 01:23:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:23:38,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 49 [2021-12-18 01:23:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:38,457 INFO L225 Difference]: With dead ends: 174 [2021-12-18 01:23:38,457 INFO L226 Difference]: Without dead ends: 94 [2021-12-18 01:23:38,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-18 01:23:38,459 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 52 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:38,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 793 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:23:38,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-18 01:23:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-12-18 01:23:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-18 01:23:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2021-12-18 01:23:38,472 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 49 [2021-12-18 01:23:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:38,473 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2021-12-18 01:23:38,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-18 01:23:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2021-12-18 01:23:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-18 01:23:38,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:38,477 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:38,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 01:23:38,478 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:38,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:38,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1123217906, now seen corresponding path program 1 times [2021-12-18 01:23:38,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:38,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675918285] [2021-12-18 01:23:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:38,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:23:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 01:23:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:23:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-18 01:23:38,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:38,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675918285] [2021-12-18 01:23:38,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675918285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:38,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:38,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 01:23:38,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828062514] [2021-12-18 01:23:38,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:38,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 01:23:38,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 01:23:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:23:38,924 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-18 01:23:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:39,554 INFO L93 Difference]: Finished difference Result 129 states and 165 transitions. [2021-12-18 01:23:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:23:39,558 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 83 [2021-12-18 01:23:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:39,559 INFO L225 Difference]: With dead ends: 129 [2021-12-18 01:23:39,559 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 01:23:39,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-12-18 01:23:39,561 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 124 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:39,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 994 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 01:23:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-18 01:23:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 64 states have internal predecessors, (75), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-18 01:23:39,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2021-12-18 01:23:39,579 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 83 [2021-12-18 01:23:39,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:39,581 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2021-12-18 01:23:39,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 12 states have internal predecessors, (43), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-18 01:23:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2021-12-18 01:23:39,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 01:23:39,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:39,588 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:39,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 01:23:39,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash 8607151, now seen corresponding path program 1 times [2021-12-18 01:23:39,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54870128] [2021-12-18 01:23:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:39,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:23:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:39,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:23:39,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:23:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:40,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 01:23:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 01:23:40,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54870128] [2021-12-18 01:23:40,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54870128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:23:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043158496] [2021-12-18 01:23:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:40,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:23:40,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:40,031 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 01:23:40,056 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 01:23:40,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:40,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 01:23:40,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-18 01:23:40,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:23:40,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043158496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:40,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:23:40,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 26 [2021-12-18 01:23:40,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274978781] [2021-12-18 01:23:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:40,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 01:23:40,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:40,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 01:23:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-12-18 01:23:40,749 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-18 01:23:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:41,059 INFO L93 Difference]: Finished difference Result 150 states and 192 transitions. [2021-12-18 01:23:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:23:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 92 [2021-12-18 01:23:41,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:41,065 INFO L225 Difference]: With dead ends: 150 [2021-12-18 01:23:41,065 INFO L226 Difference]: Without dead ends: 102 [2021-12-18 01:23:41,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 01:23:41,070 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:41,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1184 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:23:41,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-18 01:23:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-12-18 01:23:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 69 states have internal predecessors, (80), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2021-12-18 01:23:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2021-12-18 01:23:41,085 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 92 [2021-12-18 01:23:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:41,085 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2021-12-18 01:23:41,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 5 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-18 01:23:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2021-12-18 01:23:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-18 01:23:41,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:41,087 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:41,117 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 01:23:41,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:23:41,288 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:41,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 890340335, now seen corresponding path program 1 times [2021-12-18 01:23:41,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:41,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975101925] [2021-12-18 01:23:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:41,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:23:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:23:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:23:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-18 01:23:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:41,682 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 01:23:41,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:41,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975101925] [2021-12-18 01:23:41,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975101925] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:23:41,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:23:41,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-18 01:23:41,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910601073] [2021-12-18 01:23:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:23:41,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 01:23:41,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 01:23:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-18 01:23:41,685 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-18 01:23:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:42,331 INFO L93 Difference]: Finished difference Result 156 states and 205 transitions. [2021-12-18 01:23:42,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 01:23:42,332 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) Word has length 92 [2021-12-18 01:23:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:42,333 INFO L225 Difference]: With dead ends: 156 [2021-12-18 01:23:42,333 INFO L226 Difference]: Without dead ends: 123 [2021-12-18 01:23:42,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-12-18 01:23:42,335 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 160 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:42,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 919 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 01:23:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-18 01:23:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 106. [2021-12-18 01:23:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-18 01:23:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 134 transitions. [2021-12-18 01:23:42,354 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 134 transitions. Word has length 92 [2021-12-18 01:23:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:42,354 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 134 transitions. [2021-12-18 01:23:42,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 13 states have internal predecessors, (44), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-18 01:23:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 134 transitions. [2021-12-18 01:23:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-18 01:23:42,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:23:42,358 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:23:42,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 01:23:42,358 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:23:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:23:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -871660918, now seen corresponding path program 1 times [2021-12-18 01:23:42,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:23:42,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529245312] [2021-12-18 01:23:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:42,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:23:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:23:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 01:23:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:42,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 01:23:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 01:23:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 01:23:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 01:23:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:23:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:23:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 01:23:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 01:23:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 01:23:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-12-18 01:23:42,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:23:42,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529245312] [2021-12-18 01:23:42,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529245312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:23:42,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096701951] [2021-12-18 01:23:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:23:42,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:23:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:23:42,889 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 01:23:42,918 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 01:23:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:23:43,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 01:23:43,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:23:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-18 01:23:43,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:23:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-18 01:23:43,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096701951] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 01:23:43,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 01:23:43,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 11] total 22 [2021-12-18 01:23:43,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867085742] [2021-12-18 01:23:43,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 01:23:43,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 01:23:43,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:23:43,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 01:23:43,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-12-18 01:23:43,796 INFO L87 Difference]: Start difference. First operand 106 states and 134 transitions. Second operand has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (23), 10 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-18 01:23:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:23:44,252 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2021-12-18 01:23:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 01:23:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (23), 10 states have call predecessors, (23), 8 states have call successors, (23) Word has length 111 [2021-12-18 01:23:44,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:23:44,253 INFO L225 Difference]: With dead ends: 139 [2021-12-18 01:23:44,253 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 01:23:44,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 244 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 01:23:44,255 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:23:44,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 327 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 01:23:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 01:23:44,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 01:23:44,256 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 01:23:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 01:23:44,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2021-12-18 01:23:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:23:44,257 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 01:23:44,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.7) internal successors, (74), 16 states have internal predecessors, (74), 8 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (23), 10 states have call predecessors, (23), 8 states have call successors, (23) [2021-12-18 01:23:44,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 01:23:44,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 01:23:44,260 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 01:23:44,291 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 01:23:44,461 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,SelfDestructingSolverStorable5 [2021-12-18 01:23:44,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 01:23:44,734 INFO L854 garLoopResultBuilder]: At program point L6816(lines 6807 6817) the Hoare annotation is: (and (not (= 16 |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (not (= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base|)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0) (not (= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.base|)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 0)) [2021-12-18 01:23:44,735 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6801 6805) no Hoare annotation was computed. [2021-12-18 01:23:44,735 INFO L858 garLoopResultBuilder]: For program point L6811-1(lines 6811 6812) no Hoare annotation was computed. [2021-12-18 01:23:44,735 INFO L854 garLoopResultBuilder]: At program point L6811(line 6811) the Hoare annotation is: (and (not (= 16 |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (not (= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base|)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0)) [2021-12-18 01:23:44,735 INFO L858 garLoopResultBuilder]: For program point L6811-5(lines 6811 6812) no Hoare annotation was computed. [2021-12-18 01:23:44,736 INFO L858 garLoopResultBuilder]: For program point L6808-1(line 6808) no Hoare annotation was computed. [2021-12-18 01:23:44,736 INFO L854 garLoopResultBuilder]: At program point L6808(line 6808) the Hoare annotation is: (let ((.cse0 (not (= 16 |ensure_string_is_allocated_bounded_length_#in~max_size#1|)))) (and (= |#memory_int| |old(#memory_int)|) (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (or (<= |ensure_string_is_allocated_bounded_length_~len~1#1| (+ (* 18446744073709551616 (div |ensure_string_is_allocated_bounded_length_~len~1#1| 18446744073709551616)) 15)) .cse0) (= |#memory_real| |old(#memory_real)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (or .cse0 (<= (* 18446744073709551616 (div (+ |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1| 18446744073709551600) 18446744073709551616)) |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~len#1|)) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|))) [2021-12-18 01:23:44,736 INFO L858 garLoopResultBuilder]: For program point L6811-3(line 6811) no Hoare annotation was computed. [2021-12-18 01:23:44,736 INFO L854 garLoopResultBuilder]: At program point L6811-2(line 6811) the Hoare annotation is: (and (not (= 16 |ensure_string_is_allocated_bounded_length_#in~max_size#1|)) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (not (= 0 |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base|)) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.offset| 0)) [2021-12-18 01:23:44,736 INFO L854 garLoopResultBuilder]: At program point L6802(line 6802) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (= |#memory_real| |old(#memory_real)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2021-12-18 01:23:44,737 INFO L858 garLoopResultBuilder]: For program point L6803-1(line 6803) no Hoare annotation was computed. [2021-12-18 01:23:44,737 INFO L854 garLoopResultBuilder]: At program point L6803(line 6803) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (= |#memory_real| |old(#memory_real)|) (or (= |ensure_string_is_allocated_bounded_length_#in~max_size#1| |ensure_string_is_allocated_bounded_length_~max_size#1|) (= |ensure_string_is_allocated_bounded_length_~max_size#1| 16)) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2021-12-18 01:23:44,737 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6801 6805) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (= |#memory_real| |old(#memory_real)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2021-12-18 01:23:44,737 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-12-18 01:23:44,737 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6801 6805) no Hoare annotation was computed. [2021-12-18 01:23:44,737 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6883 6888) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#length| |old(#length)|)) [2021-12-18 01:23:44,738 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6883 6888) no Hoare annotation was computed. [2021-12-18 01:23:44,738 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6883 6888) no Hoare annotation was computed. [2021-12-18 01:23:44,738 INFO L858 garLoopResultBuilder]: For program point L6884-1(lines 6884 6886) no Hoare annotation was computed. [2021-12-18 01:23:44,738 INFO L854 garLoopResultBuilder]: At program point L6884(lines 6884 6886) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (= |bounded_malloc_#in~size| bounded_malloc_~size)) [2021-12-18 01:23:44,738 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-12-18 01:23:44,738 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-12-18 01:23:44,738 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-12-18 01:23:44,739 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-18 01:23:44,739 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-18 01:23:44,739 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-18 01:23:44,739 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-18 01:23:44,739 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6890 6892) no Hoare annotation was computed. [2021-12-18 01:23:44,739 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6890 6892) no Hoare annotation was computed. [2021-12-18 01:23:44,739 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6890 6892) the Hoare annotation is: true [2021-12-18 01:23:44,740 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6253 6258) the Hoare annotation is: true [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point L6257-2(line 6257) no Hoare annotation was computed. [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point L6257-3(line 6257) no Hoare annotation was computed. [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point L6257(line 6257) no Hoare annotation was computed. [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6253 6258) no Hoare annotation was computed. [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point L6257-5(line 6257) no Hoare annotation was computed. [2021-12-18 01:23:44,740 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6253 6258) no Hoare annotation was computed. [2021-12-18 01:23:44,741 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-18 01:23:44,741 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-18 01:23:44,741 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-18 01:23:44,741 INFO L858 garLoopResultBuilder]: For program point L7455-1(line 7455) no Hoare annotation was computed. [2021-12-18 01:23:44,741 INFO L861 garLoopResultBuilder]: At program point L8925(line 8925) the Hoare annotation is: true [2021-12-18 01:23:44,741 INFO L854 garLoopResultBuilder]: At program point L7455(line 7455) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,742 INFO L854 garLoopResultBuilder]: At program point L7455-2(lines 7437 7456) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,742 INFO L854 garLoopResultBuilder]: At program point L8921(line 8921) the Hoare annotation is: false [2021-12-18 01:23:44,742 INFO L854 garLoopResultBuilder]: At program point L8921-1(line 8921) the Hoare annotation is: false [2021-12-18 01:23:44,742 INFO L858 garLoopResultBuilder]: For program point L8921-2(line 8921) no Hoare annotation was computed. [2021-12-18 01:23:44,742 INFO L858 garLoopResultBuilder]: For program point L7439(line 7439) no Hoare annotation was computed. [2021-12-18 01:23:44,742 INFO L858 garLoopResultBuilder]: For program point L7439-5(line 7439) no Hoare annotation was computed. [2021-12-18 01:23:44,742 INFO L854 garLoopResultBuilder]: At program point L7439-4(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,743 INFO L858 garLoopResultBuilder]: For program point L7439-3(line 7439) no Hoare annotation was computed. [2021-12-18 01:23:44,743 INFO L854 garLoopResultBuilder]: At program point L7439-2(line 7439) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,743 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-18 01:23:44,743 INFO L854 garLoopResultBuilder]: At program point L8922(line 8922) the Hoare annotation is: false [2021-12-18 01:23:44,743 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-18 01:23:44,743 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-18 01:23:44,743 INFO L858 garLoopResultBuilder]: For program point L8918-1(line 8918) no Hoare annotation was computed. [2021-12-18 01:23:44,744 INFO L858 garLoopResultBuilder]: For program point L8922-1(line 8922) no Hoare annotation was computed. [2021-12-18 01:23:44,744 INFO L854 garLoopResultBuilder]: At program point L8918(line 8918) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-18 01:23:44,744 INFO L854 garLoopResultBuilder]: At program point L7440-2(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,744 INFO L858 garLoopResultBuilder]: For program point L7440(line 7440) no Hoare annotation was computed. [2021-12-18 01:23:44,744 INFO L858 garLoopResultBuilder]: For program point L7440-5(line 7440) no Hoare annotation was computed. [2021-12-18 01:23:44,744 INFO L854 garLoopResultBuilder]: At program point L7440-4(line 7440) the Hoare annotation is: (or (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) (and (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.base|) (= 0 |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_b~1#1.offset|))) [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point L7440-3(line 7440) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point L8919(lines 8919 8923) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point L7441(lines 7441 7445) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point L8911(lines 8911 8924) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L858 garLoopResultBuilder]: For program point L7446(lines 7446 7454) no Hoare annotation was computed. [2021-12-18 01:23:44,745 INFO L854 garLoopResultBuilder]: At program point L8916(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-18 01:23:44,746 INFO L858 garLoopResultBuilder]: For program point L8916-1(lines 8916 8918) no Hoare annotation was computed. [2021-12-18 01:23:44,746 INFO L854 garLoopResultBuilder]: At program point L8916-2(line 8916) the Hoare annotation is: (and (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.base| 0) (= |ULTIMATE.start_aws_string_eq_ignore_case_harness_~str_a~1#1.offset| 0)) [2021-12-18 01:23:44,746 INFO L854 garLoopResultBuilder]: At program point L8920(line 8920) the Hoare annotation is: false [2021-12-18 01:23:44,746 INFO L854 garLoopResultBuilder]: At program point L8920-1(line 8920) the Hoare annotation is: false [2021-12-18 01:23:44,746 INFO L858 garLoopResultBuilder]: For program point L8920-2(line 8920) no Hoare annotation was computed. [2021-12-18 01:23:44,746 INFO L858 garLoopResultBuilder]: For program point L8912-3(line 8912) no Hoare annotation was computed. [2021-12-18 01:23:44,746 INFO L858 garLoopResultBuilder]: For program point L8916-7(lines 8916 8918) no Hoare annotation was computed. [2021-12-18 01:23:44,747 INFO L858 garLoopResultBuilder]: For program point L8912-5(lines 8912 8913) no Hoare annotation was computed. [2021-12-18 01:23:44,747 INFO L858 garLoopResultBuilder]: For program point L8916-3(lines 8916 8917) no Hoare annotation was computed. [2021-12-18 01:23:44,747 INFO L861 garLoopResultBuilder]: At program point L8912(line 8912) the Hoare annotation is: true [2021-12-18 01:23:44,747 INFO L858 garLoopResultBuilder]: For program point L8912-1(lines 8912 8913) no Hoare annotation was computed. [2021-12-18 01:23:44,747 INFO L858 garLoopResultBuilder]: For program point L8916-5(lines 8916 8917) no Hoare annotation was computed. [2021-12-18 01:23:44,747 INFO L861 garLoopResultBuilder]: At program point L8912-2(line 8912) the Hoare annotation is: true [2021-12-18 01:23:44,747 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-18 01:23:44,748 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-18 01:23:44,748 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-18 01:23:44,748 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-18 01:23:44,748 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-18 01:23:44,748 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-18 01:23:44,748 INFO L861 garLoopResultBuilder]: At program point aws_array_eq_ignore_caseENTRY(lines 7986 8016) the Hoare annotation is: true [2021-12-18 01:23:44,748 INFO L858 garLoopResultBuilder]: For program point L8005-4(lines 8005 8011) no Hoare annotation was computed. [2021-12-18 01:23:44,749 INFO L858 garLoopResultBuilder]: For program point L7994(lines 7991 8016) no Hoare annotation was computed. [2021-12-18 01:23:44,749 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseFINAL(lines 7986 8016) no Hoare annotation was computed. [2021-12-18 01:23:44,749 INFO L861 garLoopResultBuilder]: At program point L7992-1(line 7992) the Hoare annotation is: true [2021-12-18 01:23:44,749 INFO L861 garLoopResultBuilder]: At program point L7992(line 7992) the Hoare annotation is: true [2021-12-18 01:23:44,749 INFO L858 garLoopResultBuilder]: For program point L8006(lines 8006 8010) no Hoare annotation was computed. [2021-12-18 01:23:44,749 INFO L861 garLoopResultBuilder]: At program point L8005-3(lines 8005 8011) the Hoare annotation is: true [2021-12-18 01:23:44,749 INFO L858 garLoopResultBuilder]: For program point aws_array_eq_ignore_caseEXIT(lines 7986 8016) no Hoare annotation was computed. [2021-12-18 01:23:44,750 INFO L858 garLoopResultBuilder]: For program point L8005-2(lines 8005 8011) no Hoare annotation was computed. [2021-12-18 01:23:44,752 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-18 01:23:44,754 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 01:23:44,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 01:23:44 BoogieIcfgContainer [2021-12-18 01:23:44,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 01:23:44,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 01:23:44,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 01:23:44,767 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 01:23:44,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:23:37" (3/4) ... [2021-12-18 01:23:44,769 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 01:23:44,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-12-18 01:23:44,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-18 01:23:44,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-18 01:23:44,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-12-18 01:23:44,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-18 01:23:44,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-18 01:23:44,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_array_eq_ignore_case [2021-12-18 01:23:44,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-12-18 01:23:44,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-12-18 01:23:44,783 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2021-12-18 01:23:44,784 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-12-18 01:23:44,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 01:23:44,785 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-18 01:23:44,807 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(16 == \old(max_size)) && (\old(max_size) == max_size || max_size == 16)) && !(0 == str)) && str == 0) && !(0 == \result)) && \result == 0 [2021-12-18 01:23:44,939 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 01:23:44,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 01:23:44,940 INFO L158 Benchmark]: Toolchain (without parser) took 11095.11ms. Allocated memory was 100.7MB in the beginning and 247.5MB in the end (delta: 146.8MB). Free memory was 73.8MB in the beginning and 51.9MB in the end (delta: 21.9MB). Peak memory consumption was 166.6MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,940 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 01:23:44,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2295.77ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 73.8MB in the beginning and 56.2MB in the end (delta: 17.5MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 191.55ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 56.2MB in the beginning and 129.9MB in the end (delta: -73.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,941 INFO L158 Benchmark]: Boogie Preprocessor took 56.59ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 124.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,941 INFO L158 Benchmark]: RCFGBuilder took 649.77ms. Allocated memory is still 180.4MB. Free memory was 124.6MB in the beginning and 93.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,942 INFO L158 Benchmark]: TraceAbstraction took 7722.18ms. Allocated memory was 180.4MB in the beginning and 247.5MB in the end (delta: 67.1MB). Free memory was 92.1MB in the beginning and 125.8MB in the end (delta: -33.7MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,942 INFO L158 Benchmark]: Witness Printer took 173.03ms. Allocated memory is still 247.5MB. Free memory was 125.8MB in the beginning and 51.9MB in the end (delta: 74.0MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2021-12-18 01:23:44,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2295.77ms. Allocated memory was 100.7MB in the beginning and 134.2MB in the end (delta: 33.6MB). Free memory was 73.8MB in the beginning and 56.2MB in the end (delta: 17.5MB). Peak memory consumption was 67.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 191.55ms. Allocated memory was 134.2MB in the beginning and 180.4MB in the end (delta: 46.1MB). Free memory was 56.2MB in the beginning and 129.9MB in the end (delta: -73.6MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.59ms. Allocated memory is still 180.4MB. Free memory was 129.9MB in the beginning and 124.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 649.77ms. Allocated memory is still 180.4MB. Free memory was 124.6MB in the beginning and 93.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7722.18ms. Allocated memory was 180.4MB in the beginning and 247.5MB in the end (delta: 67.1MB). Free memory was 92.1MB in the beginning and 125.8MB in the end (delta: -33.7MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 173.03ms. Allocated memory is still 247.5MB. Free memory was 125.8MB in the beginning and 51.9MB in the end (delta: 74.0MB). Peak memory consumption was 73.4MB. 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 10 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.7s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 499 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 4343 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3745 mSDsCounter, 243 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1998 IncrementalHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 243 mSolverCounterUnsat, 598 mSDtfsCounter, 1998 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 552 GetRequests, 431 SyntacticMatches, 4 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, InterpolantAutomatonStates: 74, 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, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 170 PreInvPairs, 218 NumberOfFragments, 335 HoareAnnotationTreeSize, 170 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 36 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 679 NumberOfCodeBlocks, 679 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 781 ConstructedInterpolants, 0 QuantifiedInterpolants, 1578 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1866 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 448/512 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: 7437]: Loop Invariant Derived loop invariant: (str_a == 0 && str_a == 0) || (0 == str_b && 0 == str_b) - InvariantResult [Line: 8925]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8005]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6807]: Loop Invariant Derived loop invariant: ((((!(16 == \old(max_size)) && (\old(max_size) == max_size || max_size == 16)) && !(0 == str)) && str == 0) && !(0 == \result)) && \result == 0 RESULT: Ultimate proved your program to be correct! [2021-12-18 01:23:44,981 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