./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_array_list_get_at_ptr_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 e0225ff20a5ba4b5245358ee525cfd28e9ed790cb06824ac87caa63c65a2c856 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:04:21,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:04:21,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:04:21,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:04:21,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:04:21,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:04:21,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:04:21,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:04:21,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:04:21,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:04:21,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:04:21,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:04:21,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:04:21,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:04:21,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:04:21,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:04:21,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:04:21,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:04:21,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:04:21,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:04:21,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:04:21,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:04:21,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:04:21,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:04:21,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:04:21,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:04:21,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:04:21,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:04:21,199 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:04:21,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:04:21,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:04:21,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:04:21,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:04:21,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:04:21,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:04:21,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:04:21,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:04:21,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:04:21,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:04:21,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:04:21,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:04:21,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:04:21,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:04:21,237 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:04:21,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:04:21,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:04:21,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:04:21,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:04:21,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:04:21,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:04:21,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:04:21,240 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:04:21,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:04:21,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:04:21,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:04:21,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:04:21,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:04:21,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:04:21,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:04:21,242 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:04:21,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:04:21,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:04:21,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:04:21,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:04:21,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:04:21,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:04:21,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:04:21,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:04:21,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:04:21,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:04:21,244 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:04:21,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:04:21,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:04:21,244 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0225ff20a5ba4b5245358ee525cfd28e9ed790cb06824ac87caa63c65a2c856 [2022-07-22 22:04:21,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:04:21,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:04:21,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:04:21,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:04:21,485 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:04:21,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i [2022-07-22 22:04:21,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e568babbb/e3282e0ef61b4f2aa7c9edd5de6d2f41/FLAG76033077d [2022-07-22 22:04:22,171 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:04:22,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_ptr_harness.i [2022-07-22 22:04:22,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e568babbb/e3282e0ef61b4f2aa7c9edd5de6d2f41/FLAG76033077d [2022-07-22 22:04:22,509 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e568babbb/e3282e0ef61b4f2aa7c9edd5de6d2f41 [2022-07-22 22:04:22,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:04:22,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:04:22,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:04:22,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:04:22,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:04:22,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:04:22" (1/1) ... [2022-07-22 22:04:22,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b5fb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:22, skipping insertion in model container [2022-07-22 22:04:22,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:04:22" (1/1) ... [2022-07-22 22:04:22,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:04:22,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:04:22,852 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_array_list_get_at_ptr_harness.i[4499,4512] [2022-07-22 22:04:22,857 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_array_list_get_at_ptr_harness.i[4559,4572] [2022-07-22 22:04:23,383 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:04:23,456 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,462 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,463 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,464 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,464 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,472 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,473 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,474 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,476 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,477 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,477 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:04:23,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:04:23,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:04:23,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:04:23,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:04:23,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:04:23,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:04:23,677 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:04:23,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:04:23,678 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:04:23,778 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,788 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,835 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,837 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:04:23,858 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:04:23,869 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_array_list_get_at_ptr_harness.i[4499,4512] [2022-07-22 22:04:23,869 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_array_list_get_at_ptr_harness.i[4559,4572] [2022-07-22 22:04:23,906 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:04:23,930 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,931 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,932 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,947 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,948 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,948 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:23,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:24,002 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:04:24,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:04:24,003 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:04:24,004 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:04:24,005 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:04:24,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:04:24,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:04:24,009 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:04:24,010 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:04:24,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:04:24,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:24,059 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:24,083 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:24,088 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:04:24,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:04:24,242 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:04:24,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24 WrapperNode [2022-07-22 22:04:24,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:04:24,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:04:24,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:04:24,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:04:24,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,395 INFO L137 Inliner]: procedures = 691, calls = 1679, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 607 [2022-07-22 22:04:24,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:04:24,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:04:24,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:04:24,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:04:24,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:04:24,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:04:24,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:04:24,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:04:24,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (1/1) ... [2022-07-22 22:04:24,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:04:24,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:24,513 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) [2022-07-22 22:04:24,538 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 [2022-07-22 22:04:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:04:24,553 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:04:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:04:24,554 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:04:24,554 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:04:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:04:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:04:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:04:24,555 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:04:24,555 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:04:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:04:24,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:04:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:04:24,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:04:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:04:24,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:04:24,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:04:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:04:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:04:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:04:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:04:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:04:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:04:24,558 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-22 22:04:24,558 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-22 22:04:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-22 22:04:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-22 22:04:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:04:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:04:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:04:24,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:04:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:04:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-07-22 22:04:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-07-22 22:04:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:04:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:04:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:04:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:04:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:04:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:04:24,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:04:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:04:24,859 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:04:24,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:04:25,531 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:04:25,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:04:25,538 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:04:25,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:04:25 BoogieIcfgContainer [2022-07-22 22:04:25,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:04:25,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:04:25,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:04:25,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:04:25,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:04:22" (1/3) ... [2022-07-22 22:04:25,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48497679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:04:25, skipping insertion in model container [2022-07-22 22:04:25,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:04:24" (2/3) ... [2022-07-22 22:04:25,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48497679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:04:25, skipping insertion in model container [2022-07-22 22:04:25,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:04:25" (3/3) ... [2022-07-22 22:04:25,546 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_ptr_harness.i [2022-07-22 22:04:25,558 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:04:25,558 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:04:25,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:04:25,621 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56e17e8c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1010602c [2022-07-22 22:04:25,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:04:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 95 states have (on average 1.2) internal successors, (114), 96 states have internal predecessors, (114), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-22 22:04:25,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:04:25,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:25,645 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:25,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1219885948, now seen corresponding path program 1 times [2022-07-22 22:04:25,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:25,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928071162] [2022-07-22 22:04:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:04:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:04:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:04:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:04:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:04:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:04:26,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:04:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:04:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:04:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:04:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:04:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:04:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:04:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:04:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:04:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-22 22:04:26,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:26,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928071162] [2022-07-22 22:04:26,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928071162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:26,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:26,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:04:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846687966] [2022-07-22 22:04:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:26,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:04:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:04:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:04:26,438 INFO L87 Difference]: Start difference. First operand has 159 states, 95 states have (on average 1.2) internal successors, (114), 96 states have internal predecessors, (114), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:04:26,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:26,903 INFO L93 Difference]: Finished difference Result 342 states and 499 transitions. [2022-07-22 22:04:26,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:04:26,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 116 [2022-07-22 22:04:26,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:26,919 INFO L225 Difference]: With dead ends: 342 [2022-07-22 22:04:26,920 INFO L226 Difference]: Without dead ends: 181 [2022-07-22 22:04:26,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:04:26,932 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 150 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:26,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 262 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:04:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-22 22:04:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 150. [2022-07-22 22:04:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1590909090909092) internal successors, (102), 89 states have internal predecessors, (102), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-22 22:04:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 194 transitions. [2022-07-22 22:04:27,004 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 194 transitions. Word has length 116 [2022-07-22 22:04:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:27,005 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 194 transitions. [2022-07-22 22:04:27,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:04:27,005 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 194 transitions. [2022-07-22 22:04:27,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:04:27,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:27,014 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:27,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:04:27,014 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:27,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:27,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1423042578, now seen corresponding path program 1 times [2022-07-22 22:04:27,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:27,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138311006] [2022-07-22 22:04:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:04:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:04:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:04:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:04:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:04:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:04:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:04:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:04:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:04:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:04:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:04:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:04:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:04:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:04:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:04:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:04:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:04:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:04:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:04:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-22 22:04:27,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:27,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138311006] [2022-07-22 22:04:27,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138311006] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:04:27,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507154575] [2022-07-22 22:04:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:27,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:27,479 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) [2022-07-22 22:04:27,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:04:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:27,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:04:27,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-22 22:04:28,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:28,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507154575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:28,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:04:28,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:04:28,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059421002] [2022-07-22 22:04:28,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:28,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:04:28,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:28,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:04:28,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:04:28,019 INFO L87 Difference]: Start difference. First operand 150 states and 194 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:04:28,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:28,213 INFO L93 Difference]: Finished difference Result 273 states and 359 transitions. [2022-07-22 22:04:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:04:28,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2022-07-22 22:04:28,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:28,216 INFO L225 Difference]: With dead ends: 273 [2022-07-22 22:04:28,216 INFO L226 Difference]: Without dead ends: 152 [2022-07-22 22:04:28,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:04:28,217 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 199 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:28,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 562 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:04:28,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-22 22:04:28,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-22 22:04:28,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 91 states have internal predecessors, (103), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (50), 45 states have call predecessors, (50), 45 states have call successors, (50) [2022-07-22 22:04:28,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2022-07-22 22:04:28,233 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 116 [2022-07-22 22:04:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:28,233 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2022-07-22 22:04:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 22:04:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2022-07-22 22:04:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:04:28,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:28,235 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:28,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:28,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:28,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:28,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1335874116, now seen corresponding path program 1 times [2022-07-22 22:04:28,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:28,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166976050] [2022-07-22 22:04:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:28,536 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:28,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561030472] [2022-07-22 22:04:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:28,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:28,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:28,539 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) [2022-07-22 22:04:28,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:04:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:28,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:04:28,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 22:04:29,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:29,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166976050] [2022-07-22 22:04:29,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561030472] [2022-07-22 22:04:29,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561030472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:29,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:29,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:04:29,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159107194] [2022-07-22 22:04:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:04:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:29,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:04:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:04:29,094 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:04:29,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:29,413 INFO L93 Difference]: Finished difference Result 243 states and 320 transitions. [2022-07-22 22:04:29,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:04:29,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 146 [2022-07-22 22:04:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:29,416 INFO L225 Difference]: With dead ends: 243 [2022-07-22 22:04:29,416 INFO L226 Difference]: Without dead ends: 152 [2022-07-22 22:04:29,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:04:29,417 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 199 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:29,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 784 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:04:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-22 22:04:29,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-22 22:04:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 91 states have internal predecessors, (103), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (47), 45 states have call predecessors, (47), 45 states have call successors, (47) [2022-07-22 22:04:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 197 transitions. [2022-07-22 22:04:29,435 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 197 transitions. Word has length 146 [2022-07-22 22:04:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:29,436 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 197 transitions. [2022-07-22 22:04:29,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:04:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 197 transitions. [2022-07-22 22:04:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-22 22:04:29,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:29,441 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:29,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-22 22:04:29,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:29,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:29,656 INFO L85 PathProgramCache]: Analyzing trace with hash 39623736, now seen corresponding path program 2 times [2022-07-22 22:04:29,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:29,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155803745] [2022-07-22 22:04:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:29,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:29,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [96893235] [2022-07-22 22:04:29,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:04:29,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:29,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:29,720 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) [2022-07-22 22:04:29,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:04:30,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:04:30,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:04:30,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 22:04:30,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-22 22:04:30,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:30,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:30,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155803745] [2022-07-22 22:04:30,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:30,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96893235] [2022-07-22 22:04:30,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96893235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:30,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:30,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:04:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504805952] [2022-07-22 22:04:30,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:30,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:04:30,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:04:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:04:30,412 INFO L87 Difference]: Start difference. First operand 152 states and 197 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:04:30,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:30,841 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2022-07-22 22:04:30,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:04:30,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 161 [2022-07-22 22:04:30,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:30,845 INFO L225 Difference]: With dead ends: 234 [2022-07-22 22:04:30,845 INFO L226 Difference]: Without dead ends: 150 [2022-07-22 22:04:30,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:04:30,849 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 202 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:30,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 990 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:04:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-22 22:04:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-22 22:04:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-22 22:04:30,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 193 transitions. [2022-07-22 22:04:30,877 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 193 transitions. Word has length 161 [2022-07-22 22:04:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:30,880 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 193 transitions. [2022-07-22 22:04:30,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-22 22:04:30,880 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 193 transitions. [2022-07-22 22:04:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 22:04:30,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:30,883 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:30,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:31,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:31,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1225339362, now seen corresponding path program 1 times [2022-07-22 22:04:31,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385006883] [2022-07-22 22:04:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:31,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:31,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867118434] [2022-07-22 22:04:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:31,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:31,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:31,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:04:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:04:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:31,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2944 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 22:04:31,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-22 22:04:31,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:04:31,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:04:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385006883] [2022-07-22 22:04:31,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:04:31,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867118434] [2022-07-22 22:04:31,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867118434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:04:31,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:04:31,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:04:31,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802037820] [2022-07-22 22:04:31,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:04:31,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:04:31,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:04:31,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:04:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:04:31,835 INFO L87 Difference]: Start difference. First operand 150 states and 193 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:04:31,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:04:31,959 INFO L93 Difference]: Finished difference Result 255 states and 329 transitions. [2022-07-22 22:04:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:04:31,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 191 [2022-07-22 22:04:31,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:04:31,962 INFO L225 Difference]: With dead ends: 255 [2022-07-22 22:04:31,962 INFO L226 Difference]: Without dead ends: 150 [2022-07-22 22:04:31,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:04:31,964 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 5 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:04:31,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1223 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:04:31,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-22 22:04:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-22 22:04:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 88 states have (on average 1.1363636363636365) internal successors, (100), 89 states have internal predecessors, (100), 47 states have call successors, (47), 15 states have call predecessors, (47), 14 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-22 22:04:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 192 transitions. [2022-07-22 22:04:31,986 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 192 transitions. Word has length 191 [2022-07-22 22:04:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:04:31,986 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 192 transitions. [2022-07-22 22:04:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:04:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 192 transitions. [2022-07-22 22:04:31,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 22:04:31,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:04:31,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:04:32,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:04:32,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:32,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:04:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:04:32,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1128384140, now seen corresponding path program 1 times [2022-07-22 22:04:32,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:04:32,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084028870] [2022-07-22 22:04:32,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:32,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:04:32,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:04:32,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1805935967] [2022-07-22 22:04:32,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:04:32,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:04:32,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:04:32,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:04:32,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:04:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:04:34,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 329 conjunts are in the unsatisfiable core [2022-07-22 22:04:34,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:04:34,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:04:34,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:04:34,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:04:34,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:04:34,524 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:04:34,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-07-22 22:04:34,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-22 22:04:34,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:34,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-22 22:04:34,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:34,759 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-07-22 22:04:34,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-07-22 22:04:35,000 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v___CPROVER_overflow_mult_~#c~1.base_34| Int) (v_ArrVal_578 Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_34|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_34| v_ArrVal_578)))) (exists ((v_ArrVal_587 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_587) |c_#memory_int|))) is different from true [2022-07-22 22:04:35,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:35,405 INFO L356 Elim1Store]: treesize reduction 129, result has 28.7 percent of original size [2022-07-22 22:04:35,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 51 treesize of output 85 [2022-07-22 22:04:35,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-22 22:04:37,319 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_590 Int)) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_590)) |c_#memory_int|)) is different from true [2022-07-22 22:04:51,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:51,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-07-22 22:04:51,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:04:52,004 INFO L356 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-07-22 22:04:52,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-07-22 22:06:14,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:06:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:14,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 128 [2022-07-22 22:06:14,500 INFO L356 Elim1Store]: treesize reduction 39, result has 35.0 percent of original size [2022-07-22 22:06:14,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 89 [2022-07-22 22:06:14,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-07-22 22:06:14,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:14,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:14,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:14,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-07-22 22:06:16,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:06:16,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 34 [2022-07-22 22:07:37,601 WARN L233 SmtUtils]: Spent 10.51s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:07:43,887 INFO L356 Elim1Store]: treesize reduction 72, result has 28.7 percent of original size [2022-07-22 22:07:43,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 509 treesize of output 579 [2022-07-22 22:07:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 82 proven. 223 refuted. 6 times theorem prover too weak. 38 trivial. 21 not checked. [2022-07-22 22:07:44,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:07:52,701 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-07-22 22:08:02,946 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse2 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse0 (let ((.cse3 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse3 (+ c_aws_array_list_length_~list.offset 16)) (select .cse3 .cse2))))) (let ((.cse1 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse0)) c_aws_array_list_length_~list.base))) (or (not (<= (mod .cse0 18446744073709551616) (mod (select .cse1 (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))) (not (= (mod (select .cse1 .cse2) 18446744073709551616) 0))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_13| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse5 (+ c_aws_array_list_length_~list.offset 16)) (select .cse5 (+ c_aws_array_list_length_~list.offset 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_13|) 0 .cse4)) c_aws_array_list_length_~list.base) (+ c_aws_array_list_length_~list.offset 8)) 18446744073709551616))))) is different from false [2022-07-22 22:08:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084028870] [2022-07-22 22:08:02,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805935967] [2022-07-22 22:08:02,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805935967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:02,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:02,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2022-07-22 22:08:02,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259449485] [2022-07-22 22:08:02,951 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:08:02,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-07-22 22:08:02,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:02,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-07-22 22:08:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=3889, Unknown=75, NotChecked=384, Total=4556 [2022-07-22 22:08:02,954 INFO L87 Difference]: Start difference. First operand 150 states and 192 transitions. Second operand has 64 states, 54 states have (on average 2.185185185185185) internal successors, (118), 51 states have internal predecessors, (118), 19 states have call successors, (31), 12 states have call predecessors, (31), 20 states have return successors, (29), 19 states have call predecessors, (29), 18 states have call successors, (29) [2022-07-22 22:08:41,702 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 101 DAG size of output: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)