./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_byte_cursor_from_string_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 c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 00:24:48,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 00:24:48,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 00:24:48,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 00:24:48,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 00:24:48,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 00:24:48,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 00:24:48,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 00:24:48,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 00:24:48,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 00:24:48,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 00:24:48,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 00:24:48,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 00:24:48,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 00:24:48,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 00:24:48,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 00:24:48,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 00:24:48,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 00:24:48,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 00:24:48,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 00:24:48,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 00:24:48,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 00:24:48,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 00:24:48,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 00:24:48,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 00:24:48,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 00:24:48,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 00:24:48,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 00:24:48,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 00:24:48,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 00:24:48,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 00:24:48,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 00:24:48,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 00:24:48,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 00:24:48,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 00:24:48,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 00:24:48,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 00:24:48,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 00:24:48,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 00:24:48,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 00:24:48,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 00:24:48,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 00:24:48,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 00:24:48,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 00:24:48,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 00:24:48,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 00:24:48,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 00:24:48,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 00:24:48,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 00:24:48,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 00:24:48,250 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 00:24:48,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 00:24:48,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 00:24:48,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 00:24:48,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 00:24:48,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 00:24:48,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 00:24:48,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 00:24:48,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:24:48,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 00:24:48,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 00:24:48,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 00:24:48,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 00:24:48,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3b06783378816ab028e38f9f4609990f4d1028238bbcb0e88638ebb644bb54d [2021-12-18 00:24:48,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 00:24:48,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 00:24:48,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 00:24:48,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 00:24:48,442 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 00:24:48,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2021-12-18 00:24:48,495 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60691d359/b07f4ab1066044df87e9940f94323518/FLAG989f2c596 [2021-12-18 00:24:49,119 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 00:24:49,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_string_harness.i [2021-12-18 00:24:49,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60691d359/b07f4ab1066044df87e9940f94323518/FLAG989f2c596 [2021-12-18 00:24:49,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60691d359/b07f4ab1066044df87e9940f94323518 [2021-12-18 00:24:49,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 00:24:49,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 00:24:49,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 00:24:49,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 00:24:49,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 00:24:49,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:24:49" (1/1) ... [2021-12-18 00:24:49,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5ed47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:49, skipping insertion in model container [2021-12-18 00:24:49,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:24:49" (1/1) ... [2021-12-18 00:24:49,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 00:24:49,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 00:24:49,779 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_byte_cursor_from_string_harness.i[4501,4514] [2021-12-18 00:24:49,783 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_byte_cursor_from_string_harness.i[4561,4574] [2021-12-18 00:24:50,243 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,244 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,245 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,246 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,256 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,257 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,259 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,500 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:24:50,501 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:24:50,501 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:24:50,502 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:24:50,523 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:24:50,525 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:24:50,526 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:24:50,526 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:24:50,528 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:24:50,529 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:24:50,611 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:24:50,675 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,679 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:24:50,794 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 00:24:50,804 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_byte_cursor_from_string_harness.i[4501,4514] [2021-12-18 00:24:50,804 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_byte_cursor_from_string_harness.i[4561,4574] [2021-12-18 00:24:50,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,886 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,887 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,890 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,893 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,915 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:24:50,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:24:50,920 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:24:50,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:24:50,921 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:24:50,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:24:50,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:24:50,922 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:24:50,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:24:50,923 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:24:50,934 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:24:50,964 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:24:50,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:24:51,176 INFO L208 MainTranslator]: Completed translation [2021-12-18 00:24:51,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51 WrapperNode [2021-12-18 00:24:51,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 00:24:51,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 00:24:51,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 00:24:51,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 00:24:51,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,352 INFO L137 Inliner]: procedures = 693, calls = 2785, calls flagged for inlining = 59, calls inlined = 7, statements flattened = 833 [2021-12-18 00:24:51,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 00:24:51,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 00:24:51,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 00:24:51,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 00:24:51,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 00:24:51,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 00:24:51,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 00:24:51,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 00:24:51,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (1/1) ... [2021-12-18 00:24:51,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:24:51,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:24:51,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 00:24:51,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 00:24:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2021-12-18 00:24:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2021-12-18 00:24:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-12-18 00:24:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-12-18 00:24:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2021-12-18 00:24:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2021-12-18 00:24:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 00:24:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 00:24:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 00:24:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 00:24:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 00:24:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 00:24:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 00:24:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 00:24:51,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 00:24:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 00:24:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 00:24:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 00:24:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 00:24:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 00:24:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2021-12-18 00:24:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2021-12-18 00:24:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 00:24:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 00:24:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 00:24:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 00:24:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 00:24:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 00:24:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 00:24:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 00:24:51,510 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 00:24:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 00:24:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 00:24:51,762 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 00:24:51,763 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 00:24:52,244 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 00:24:52,250 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 00:24:52,251 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 00:24:52,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:24:52 BoogieIcfgContainer [2021-12-18 00:24:52,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 00:24:52,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 00:24:52,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 00:24:52,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 00:24:52,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:24:49" (1/3) ... [2021-12-18 00:24:52,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fef44a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:24:52, skipping insertion in model container [2021-12-18 00:24:52,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:24:51" (2/3) ... [2021-12-18 00:24:52,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fef44a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:24:52, skipping insertion in model container [2021-12-18 00:24:52,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:24:52" (3/3) ... [2021-12-18 00:24:52,259 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_string_harness.i [2021-12-18 00:24:52,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 00:24:52,263 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 00:24:52,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 00:24:52,297 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 00:24:52,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 00:24:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2021-12-18 00:24:52,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-18 00:24:52,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:52,314 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:52,315 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:52,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:52,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1122645662, now seen corresponding path program 1 times [2021-12-18 00:24:52,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:52,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941852989] [2021-12-18 00:24:52,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:52,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:52,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:52,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:52,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941852989] [2021-12-18 00:24:52,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941852989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:52,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:24:52,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 00:24:52,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999741405] [2021-12-18 00:24:52,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:52,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:24:52,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:52,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:24:52,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:24:52,953 INFO L87 Difference]: Start difference. First operand has 104 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 00:24:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:53,128 INFO L93 Difference]: Finished difference Result 201 states and 264 transitions. [2021-12-18 00:24:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 00:24:53,130 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2021-12-18 00:24:53,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:53,136 INFO L225 Difference]: With dead ends: 201 [2021-12-18 00:24:53,136 INFO L226 Difference]: Without dead ends: 98 [2021-12-18 00:24:53,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 00:24:53,140 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 92 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:53,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 140 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:24:53,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-18 00:24:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-18 00:24:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-18 00:24:53,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2021-12-18 00:24:53,169 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 85 [2021-12-18 00:24:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:53,170 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2021-12-18 00:24:53,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 00:24:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2021-12-18 00:24:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-18 00:24:53,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:53,175 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:53,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 00:24:53,175 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1334345696, now seen corresponding path program 1 times [2021-12-18 00:24:53,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:53,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586709504] [2021-12-18 00:24:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:53,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,500 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:53,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:53,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586709504] [2021-12-18 00:24:53,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586709504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:53,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:24:53,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 00:24:53,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283144549] [2021-12-18 00:24:53,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:53,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:24:53,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:53,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:24:53,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:24:53,503 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 00:24:53,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:53,755 INFO L93 Difference]: Finished difference Result 155 states and 190 transitions. [2021-12-18 00:24:53,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:24:53,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2021-12-18 00:24:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:53,759 INFO L225 Difference]: With dead ends: 155 [2021-12-18 00:24:53,760 INFO L226 Difference]: Without dead ends: 101 [2021-12-18 00:24:53,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:24:53,764 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 111 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:53,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 324 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:24:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-18 00:24:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-12-18 00:24:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 64 states have (on average 1.140625) internal successors, (73), 66 states have internal predecessors, (73), 25 states have call successors, (25), 10 states have call predecessors, (25), 11 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2021-12-18 00:24:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2021-12-18 00:24:53,782 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 85 [2021-12-18 00:24:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:53,783 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2021-12-18 00:24:53,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-18 00:24:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2021-12-18 00:24:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-18 00:24:53,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:53,785 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:53,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 00:24:53,786 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 50703397, now seen corresponding path program 1 times [2021-12-18 00:24:53,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330622426] [2021-12-18 00:24:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:53,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:53,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:53,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:53,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:54,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330622426] [2021-12-18 00:24:54,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330622426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:54,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:24:54,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 00:24:54,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315545231] [2021-12-18 00:24:54,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:54,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 00:24:54,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:54,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 00:24:54,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-18 00:24:54,094 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:54,426 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2021-12-18 00:24:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:24:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 87 [2021-12-18 00:24:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:54,428 INFO L225 Difference]: With dead ends: 113 [2021-12-18 00:24:54,428 INFO L226 Difference]: Without dead ends: 111 [2021-12-18 00:24:54,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:24:54,429 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 114 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:54,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 550 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:24:54,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-18 00:24:54,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-12-18 00:24:54,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 73 states have internal predecessors, (79), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2021-12-18 00:24:54,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2021-12-18 00:24:54,437 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 87 [2021-12-18 00:24:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:54,438 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2021-12-18 00:24:54,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:54,438 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2021-12-18 00:24:54,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-18 00:24:54,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:54,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:54,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 00:24:54,441 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:54,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:54,442 INFO L85 PathProgramCache]: Analyzing trace with hash 976473645, now seen corresponding path program 1 times [2021-12-18 00:24:54,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:54,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981079935] [2021-12-18 00:24:54,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:54,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-18 00:24:54,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:54,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981079935] [2021-12-18 00:24:54,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981079935] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:24:54,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121269266] [2021-12-18 00:24:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:54,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:24:54,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:24:54,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:24:54,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 00:24:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:55,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2658 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 00:24:55,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:24:55,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:24:55,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-18 00:24:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:56,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:24:56,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121269266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:56,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:24:56,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2021-12-18 00:24:56,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6735068] [2021-12-18 00:24:56,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:56,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 00:24:56,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 00:24:56,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=801, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:24:56,057 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-18 00:24:56,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:56,216 INFO L93 Difference]: Finished difference Result 196 states and 234 transitions. [2021-12-18 00:24:56,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 00:24:56,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) Word has length 91 [2021-12-18 00:24:56,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:56,218 INFO L225 Difference]: With dead ends: 196 [2021-12-18 00:24:56,218 INFO L226 Difference]: Without dead ends: 127 [2021-12-18 00:24:56,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=1158, Unknown=0, NotChecked=0, Total=1260 [2021-12-18 00:24:56,219 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 32 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:56,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1612 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2021-12-18 00:24:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-18 00:24:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2021-12-18 00:24:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.144578313253012) internal successors, (95), 86 states have internal predecessors, (95), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2021-12-18 00:24:56,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2021-12-18 00:24:56,227 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 91 [2021-12-18 00:24:56,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:56,228 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2021-12-18 00:24:56,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 7 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 9 states have call predecessors, (13), 6 states have call successors, (13) [2021-12-18 00:24:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2021-12-18 00:24:56,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-18 00:24:56,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:56,229 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:56,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 00:24:56,445 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 00:24:56,445 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1234639083, now seen corresponding path program 1 times [2021-12-18 00:24:56,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:56,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239882797] [2021-12-18 00:24:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:56,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-18 00:24:56,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239882797] [2021-12-18 00:24:56,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239882797] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:24:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645957556] [2021-12-18 00:24:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:56,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:24:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:24:56,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:24:56,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 00:24:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:24:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:24:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:57,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:24:57,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645957556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:57,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:24:57,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-12-18 00:24:57,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784659578] [2021-12-18 00:24:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:57,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:24:57,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:24:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:24:57,471 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:57,553 INFO L93 Difference]: Finished difference Result 183 states and 222 transitions. [2021-12-18 00:24:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 00:24:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 91 [2021-12-18 00:24:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:57,555 INFO L225 Difference]: With dead ends: 183 [2021-12-18 00:24:57,555 INFO L226 Difference]: Without dead ends: 118 [2021-12-18 00:24:57,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:24:57,556 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 3 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:57,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 314 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2021-12-18 00:24:57,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-18 00:24:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-12-18 00:24:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 79 states have internal predecessors, (86), 26 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2021-12-18 00:24:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2021-12-18 00:24:57,564 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 91 [2021-12-18 00:24:57,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:57,564 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2021-12-18 00:24:57,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2021-12-18 00:24:57,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-18 00:24:57,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:57,566 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:57,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 00:24:57,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:24:57,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:57,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:57,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2058076652, now seen corresponding path program 1 times [2021-12-18 00:24:57,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:57,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202174367] [2021-12-18 00:24:57,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:57,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:57,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-18 00:24:58,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:58,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202174367] [2021-12-18 00:24:58,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202174367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:24:58,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:24:58,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-18 00:24:58,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669860909] [2021-12-18 00:24:58,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:24:58,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 00:24:58,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:24:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 00:24:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:24:58,070 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:58,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:24:58,704 INFO L93 Difference]: Finished difference Result 131 states and 152 transitions. [2021-12-18 00:24:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 00:24:58,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2021-12-18 00:24:58,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:24:58,705 INFO L225 Difference]: With dead ends: 131 [2021-12-18 00:24:58,705 INFO L226 Difference]: Without dead ends: 129 [2021-12-18 00:24:58,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-12-18 00:24:58,706 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 81 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:24:58,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 828 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:24:58,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-18 00:24:58,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2021-12-18 00:24:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 80 states have internal predecessors, (87), 25 states have call successors, (25), 12 states have call predecessors, (25), 13 states have return successors, (26), 24 states have call predecessors, (26), 24 states have call successors, (26) [2021-12-18 00:24:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 138 transitions. [2021-12-18 00:24:58,712 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 138 transitions. Word has length 93 [2021-12-18 00:24:58,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:24:58,713 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 138 transitions. [2021-12-18 00:24:58,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 11 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-18 00:24:58,713 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 138 transitions. [2021-12-18 00:24:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-18 00:24:58,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:24:58,714 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:24:58,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 00:24:58,714 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:24:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:24:58,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1315799824, now seen corresponding path program 1 times [2021-12-18 00:24:58,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:24:58,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576376034] [2021-12-18 00:24:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:58,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:24:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:24:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:24:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:24:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 00:24:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-18 00:24:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 00:24:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:24:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:24:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:24:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:24:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:24:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:24:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:24:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-18 00:24:59,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:24:59,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576376034] [2021-12-18 00:24:59,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576376034] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:24:59,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915611385] [2021-12-18 00:24:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:24:59,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:24:59,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:24:59,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:24:59,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 00:24:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:24:59,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 120 conjunts are in the unsatisfiable core [2021-12-18 00:24:59,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:24:59,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:25:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:25:01,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 71 [2021-12-18 00:25:01,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-18 00:25:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:25:03,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:25:03,647 INFO L354 Elim1Store]: treesize reduction 120, result has 17.2 percent of original size [2021-12-18 00:25:03,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 138 treesize of output 103 [2021-12-18 00:25:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-18 00:25:03,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:25:17,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:25:17,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 89 [2021-12-18 00:25:18,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915611385] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:25:18,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:25:18,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 36] total 46 [2021-12-18 00:25:18,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111938768] [2021-12-18 00:25:18,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:25:18,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-18 00:25:18,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:25:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-18 00:25:18,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3573, Unknown=1, NotChecked=0, Total=3782 [2021-12-18 00:25:18,327 INFO L87 Difference]: Start difference. First operand 117 states and 138 transitions. Second operand has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2021-12-18 00:25:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:25:19,057 INFO L93 Difference]: Finished difference Result 124 states and 143 transitions. [2021-12-18 00:25:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 00:25:19,059 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) Word has length 103 [2021-12-18 00:25:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:25:19,059 INFO L225 Difference]: With dead ends: 124 [2021-12-18 00:25:19,059 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 00:25:19,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 103 SyntacticMatches, 8 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=295, Invalid=5106, Unknown=1, NotChecked=0, Total=5402 [2021-12-18 00:25:19,061 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 57 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:25:19,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 334 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 382 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2021-12-18 00:25:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 00:25:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 00:25:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 00:25:19,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 00:25:19,064 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 103 [2021-12-18 00:25:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:25:19,064 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 00:25:19,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 2.717948717948718) internal successors, (106), 34 states have internal predecessors, (106), 16 states have call successors, (32), 8 states have call predecessors, (32), 12 states have return successors, (30), 16 states have call predecessors, (30), 15 states have call successors, (30) [2021-12-18 00:25:19,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 00:25:19,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 00:25:19,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 00:25:19,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-18 00:25:19,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:25:19,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 00:25:19,392 INFO L854 garLoopResultBuilder]: At program point L6815(lines 6806 6816) 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_#res#1.base| |#StackHeapBarrier|) (= |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_~str~0#1.base| |#StackHeapBarrier|) (= |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_#res#1.offset| 0)) [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthEXIT(lines 6800 6804) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point L6810(line 6810) 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) (< |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| |#StackHeapBarrier|)) [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6807-1(line 6807) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point L6807(line 6807) 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 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6810-3(line 6810) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point L6810-2(line 6810) 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) (< |ensure_string_is_allocated_bounded_length_ensure_string_is_allocated_~str~0#1.base| |#StackHeapBarrier|)) [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6810-1(lines 6810 6811) no Hoare annotation was computed. [2021-12-18 00:25:19,393 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 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point ensure_string_is_allocated_bounded_lengthENTRY(lines 6800 6804) 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 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6810-5(lines 6810 6811) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6801-1(line 6801) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point L6801(line 6801) 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 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point L6802-1(line 6802) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point ensure_string_is_allocated_bounded_lengthFINAL(lines 6800 6804) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L854 garLoopResultBuilder]: At program point bounded_mallocENTRY(lines 6882 6887) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#length| |old(#length)|)) [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point bounded_mallocFINAL(lines 6882 6887) no Hoare annotation was computed. [2021-12-18 00:25:19,393 INFO L858 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2021-12-18 00:25:19,394 INFO L858 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2021-12-18 00:25:19,394 INFO L854 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#length| |old(#length)|) (= |bounded_malloc_#in~size| bounded_malloc_~size)) [2021-12-18 00:25:19,394 INFO L858 garLoopResultBuilder]: For program point nondet_boolFINAL(line 261) no Hoare annotation was computed. [2021-12-18 00:25:19,394 INFO L858 garLoopResultBuilder]: For program point nondet_boolEXIT(line 261) no Hoare annotation was computed. [2021-12-18 00:25:19,394 INFO L861 garLoopResultBuilder]: At program point nondet_boolENTRY(line 261) the Hoare annotation is: true [2021-12-18 00:25:19,394 INFO L861 garLoopResultBuilder]: At program point aws_string_bytesENTRY(lines 6242 6246) the Hoare annotation is: true [2021-12-18 00:25:19,394 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesEXIT(lines 6242 6246) no Hoare annotation was computed. [2021-12-18 00:25:19,394 INFO L858 garLoopResultBuilder]: For program point aws_string_bytesFINAL(lines 6242 6246) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L861 garLoopResultBuilder]: At program point L6244-1(line 6244) the Hoare annotation is: true [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point L6244-2(line 6244) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L861 garLoopResultBuilder]: At program point L6244(line 6244) the Hoare annotation is: true [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 210 212) the Hoare annotation is: true [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorFINAL(lines 6889 6891) no Hoare annotation was computed. [2021-12-18 00:25:19,395 INFO L858 garLoopResultBuilder]: For program point can_fail_allocatorEXIT(lines 6889 6891) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L861 garLoopResultBuilder]: At program point can_fail_allocatorENTRY(lines 6889 6891) the Hoare annotation is: true [2021-12-18 00:25:19,396 INFO L861 garLoopResultBuilder]: At program point aws_string_is_validENTRY(lines 6252 6257) the Hoare annotation is: true [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point L6256-2(line 6256) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point L6256(line 6256) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point L6256-5(line 6256) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validFINAL(lines 6252 6257) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point L6256-3(line 6256) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L858 garLoopResultBuilder]: For program point aws_string_is_validEXIT(lines 6252 6257) no Hoare annotation was computed. [2021-12-18 00:25:19,396 INFO L861 garLoopResultBuilder]: At program point aws_byte_cursor_is_validENTRY(lines 7368 7372) the Hoare annotation is: true [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-5(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-4(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-2(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-8(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-6(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point aws_byte_cursor_is_validEXIT(lines 7368 7372) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-11(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,397 INFO L858 garLoopResultBuilder]: For program point L7371-10(line 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point L7370(lines 7370 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point L7370-2(lines 7370 7371) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point aws_byte_cursor_is_validFINAL(lines 7368 7372) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L861 garLoopResultBuilder]: At program point nondet_uint64_tENTRY(line 266) the Hoare annotation is: true [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point nondet_uint64_tFINAL(line 266) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2021-12-18 00:25:19,398 INFO L858 garLoopResultBuilder]: For program point L9538-1(line 9538) no Hoare annotation was computed. [2021-12-18 00:25:19,399 INFO L858 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: false [2021-12-18 00:25:19,399 INFO L858 garLoopResultBuilder]: For program point L9518-1(line 9518) no Hoare annotation was computed. [2021-12-18 00:25:19,399 INFO L858 garLoopResultBuilder]: For program point L8240-2(line 8240) no Hoare annotation was computed. [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L8240-1(line 8240) the Hoare annotation is: false [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L9518-2(lines 9516 9519) the Hoare annotation is: false [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L8240(line 8240) the Hoare annotation is: false [2021-12-18 00:25:19,399 INFO L858 garLoopResultBuilder]: For program point L8236-1(line 8236) no Hoare annotation was computed. [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L8236(line 8236) the Hoare annotation is: false [2021-12-18 00:25:19,399 INFO L854 garLoopResultBuilder]: At program point L9518(line 9518) the Hoare annotation is: false [2021-12-18 00:25:19,400 INFO L854 garLoopResultBuilder]: At program point L9541(line 9541) the Hoare annotation is: false [2021-12-18 00:25:19,400 INFO L854 garLoopResultBuilder]: At program point L9541-1(line 9541) the Hoare annotation is: false [2021-12-18 00:25:19,400 INFO L858 garLoopResultBuilder]: For program point L9541-2(line 9541) no Hoare annotation was computed. [2021-12-18 00:25:19,400 INFO L858 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2021-12-18 00:25:19,400 INFO L854 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: false [2021-12-18 00:25:19,400 INFO L854 garLoopResultBuilder]: At program point L9543(line 9543) the Hoare annotation is: false [2021-12-18 00:25:19,400 INFO L858 garLoopResultBuilder]: For program point L9543-1(line 9543) no Hoare annotation was computed. [2021-12-18 00:25:19,400 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-18 00:25:19,400 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-18 00:25:19,401 INFO L858 garLoopResultBuilder]: For program point L9537(lines 9537 9545) no Hoare annotation was computed. [2021-12-18 00:25:19,401 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-18 00:25:19,401 INFO L858 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2021-12-18 00:25:19,401 INFO L854 garLoopResultBuilder]: At program point L9517(line 9517) the Hoare annotation is: false [2021-12-18 00:25:19,401 INFO L854 garLoopResultBuilder]: At program point L9517-1(line 9517) the Hoare annotation is: false [2021-12-18 00:25:19,401 INFO L858 garLoopResultBuilder]: For program point L9517-2(line 9517) no Hoare annotation was computed. [2021-12-18 00:25:19,401 INFO L854 garLoopResultBuilder]: At program point L8241(lines 8235 8242) the Hoare annotation is: false [2021-12-18 00:25:19,401 INFO L861 garLoopResultBuilder]: At program point L9546(line 9546) the Hoare annotation is: true [2021-12-18 00:25:19,401 INFO L858 garLoopResultBuilder]: For program point L9542-1(line 9542) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L854 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: false [2021-12-18 00:25:19,402 INFO L854 garLoopResultBuilder]: At program point L9540(line 9540) the Hoare annotation is: false [2021-12-18 00:25:19,402 INFO L854 garLoopResultBuilder]: At program point L9540-1(line 9540) the Hoare annotation is: false [2021-12-18 00:25:19,402 INFO L861 garLoopResultBuilder]: At program point L9538(line 9538) the Hoare annotation is: true [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point L9540-2(line 9540) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L854 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: false [2021-12-18 00:25:19,402 INFO L854 garLoopResultBuilder]: At program point L9542(line 9542) the Hoare annotation is: false [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 222 224) the Hoare annotation is: true [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2021-12-18 00:25:19,402 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2021-12-18 00:25:19,405 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:25:19,405 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 00:25:19,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:25:19 BoogieIcfgContainer [2021-12-18 00:25:19,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 00:25:19,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 00:25:19,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 00:25:19,415 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 00:25:19,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:24:52" (3/4) ... [2021-12-18 00:25:19,418 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 00:25:19,421 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ensure_string_is_allocated_bounded_length [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_cursor_is_valid [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_bool [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_bytes [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-18 00:25:19,422 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-18 00:25:19,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure can_fail_allocator [2021-12-18 00:25:19,423 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_string_is_valid [2021-12-18 00:25:19,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 127 nodes and edges [2021-12-18 00:25:19,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 57 nodes and edges [2021-12-18 00:25:19,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-12-18 00:25:19,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-18 00:25:19,443 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-12-18 00:25:19,443 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-18 00:25:19,444 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 00:25:19,445 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-18 00:25:19,470 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(16 == \old(max_size)) && (\old(max_size) == max_size || max_size == 16)) && !(0 == str)) && \result < unknown-#StackHeapBarrier-unknown) && str == 0) && !(0 == \result)) && str < unknown-#StackHeapBarrier-unknown) && \result == 0 [2021-12-18 00:25:20,020 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 00:25:20,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 00:25:20,020 INFO L158 Benchmark]: Toolchain (without parser) took 30500.54ms. Allocated memory was 96.5MB in the beginning and 469.8MB in the end (delta: 373.3MB). Free memory was 55.3MB in the beginning and 264.3MB in the end (delta: -208.9MB). Peak memory consumption was 322.6MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,020 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 79.7MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 00:25:20,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1655.74ms. Allocated memory was 96.5MB in the beginning and 163.6MB in the end (delta: 67.1MB). Free memory was 55.0MB in the beginning and 110.2MB in the end (delta: -55.1MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 174.87ms. Allocated memory is still 163.6MB. Free memory was 110.2MB in the beginning and 98.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,021 INFO L158 Benchmark]: Boogie Preprocessor took 61.15ms. Allocated memory is still 163.6MB. Free memory was 98.7MB in the beginning and 92.2MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,021 INFO L158 Benchmark]: RCFGBuilder took 837.69ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 66.4MB in the end (delta: 24.9MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,021 INFO L158 Benchmark]: TraceAbstraction took 27161.11ms. Allocated memory was 163.6MB in the beginning and 469.8MB in the end (delta: 306.2MB). Free memory was 65.3MB in the beginning and 270.9MB in the end (delta: -205.6MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,022 INFO L158 Benchmark]: Witness Printer took 604.73ms. Allocated memory is still 469.8MB. Free memory was 269.9MB in the beginning and 264.3MB in the end (delta: 5.6MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. [2021-12-18 00:25:20,023 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 79.7MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1655.74ms. Allocated memory was 96.5MB in the beginning and 163.6MB in the end (delta: 67.1MB). Free memory was 55.0MB in the beginning and 110.2MB in the end (delta: -55.1MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 174.87ms. Allocated memory is still 163.6MB. Free memory was 110.2MB in the beginning and 98.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.15ms. Allocated memory is still 163.6MB. Free memory was 98.7MB in the beginning and 92.2MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 837.69ms. Allocated memory is still 163.6MB. Free memory was 91.3MB in the beginning and 66.4MB in the end (delta: 24.9MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * TraceAbstraction took 27161.11ms. Allocated memory was 163.6MB in the beginning and 469.8MB in the end (delta: 306.2MB). Free memory was 65.3MB in the beginning and 270.9MB in the end (delta: -205.6MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. * Witness Printer took 604.73ms. Allocated memory is still 469.8MB. Free memory was 269.9MB in the beginning and 264.3MB in the end (delta: 5.6MB). Peak memory consumption was 163.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 104 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.1s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 516 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 490 mSDsluCounter, 4102 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 198 IncrementalHoareTripleChecker+Unchecked, 3424 mSDsCounter, 244 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1776 IncrementalHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 244 mSolverCounterUnsat, 678 mSDtfsCounter, 1776 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 424 SyntacticMatches, 8 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=4, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 112 PreInvPairs, 117 NumberOfFragments, 248 HoareAnnotationTreeSize, 112 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 21.9s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 910 ConstructedInterpolants, 56 QuantifiedInterpolants, 6068 SizeOfPredicates, 57 NumberOfNonLiveVariables, 8014 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 427/502 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9516]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 8235]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 6806]: Loop Invariant Derived loop invariant: ((((((!(16 == \old(max_size)) && (\old(max_size) == max_size || max_size == 16)) && !(0 == str)) && \result < unknown-#StackHeapBarrier-unknown) && str == 0) && !(0 == \result)) && str < unknown-#StackHeapBarrier-unknown) && \result == 0 - InvariantResult [Line: 9546]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-18 00:25:20,072 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