./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_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 c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:52:18,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:52:18,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:52:18,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:52:18,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:52:18,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:52:18,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:52:18,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:52:18,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:52:18,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:52:18,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:52:18,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:52:18,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:52:18,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:52:18,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:52:18,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:52:18,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:52:18,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:52:18,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:52:18,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:52:18,488 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:52:18,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:52:18,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:52:18,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:52:18,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:52:18,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:52:18,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:52:18,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:52:18,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:52:18,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:52:18,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:52:18,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:52:18,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:52:18,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:52:18,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:52:18,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:52:18,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:52:18,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:52:18,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:52:18,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:52:18,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:52:18,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:52:18,510 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:52:18,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:52:18,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:52:18,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:52:18,536 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:52:18,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:52:18,537 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:52:18,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:52:18,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:52:18,538 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:52:18,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:52:18,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:52:18,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:52:18,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:52:18,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:52:18,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:52:18,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:52:18,540 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:52:18,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:52:18,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:52:18,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:52:18,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:52:18,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:52:18,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:52:18,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:52:18,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:52:18,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:52:18,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:52:18,544 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:52:18,544 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:52:18,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:52:18,544 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2022-07-12 10:52:18,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:52:18,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:52:18,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:52:18,797 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:52:18,798 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:52:18,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-07-12 10:52:18,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb9ef418/5dc7a85150ba47d3a34bc1c476abab47/FLAG0b252a8ad [2022-07-12 10:52:19,485 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:52:19,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-07-12 10:52:19,517 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb9ef418/5dc7a85150ba47d3a34bc1c476abab47/FLAG0b252a8ad [2022-07-12 10:52:19,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb9ef418/5dc7a85150ba47d3a34bc1c476abab47 [2022-07-12 10:52:19,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:52:19,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:52:19,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:52:19,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:52:19,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:52:19,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:52:19" (1/1) ... [2022-07-12 10:52:19,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@282df558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:19, skipping insertion in model container [2022-07-12 10:52:19,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:52:19" (1/1) ... [2022-07-12 10:52:19,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:52:19,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:52:20,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-07-12 10:52:20,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-07-12 10:52:20,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,833 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,834 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,845 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,847 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,849 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:20,850 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,081 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:21,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:21,083 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:21,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:21,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:21,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:21,086 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:21,087 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:21,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:21,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:21,181 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:21,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,317 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:21,444 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:52:21,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2022-07-12 10:52:21,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2022-07-12 10:52:21,508 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,510 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,513 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,514 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,521 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,522 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,523 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,567 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:21,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:21,568 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:21,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:21,569 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:21,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:21,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:21,570 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:21,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:21,571 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:21,593 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:21,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,630 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:21,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:21,837 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:52:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21 WrapperNode [2022-07-12 10:52:21,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:52:21,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:21,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:52:21,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:52:21,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:21,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,025 INFO L137 Inliner]: procedures = 691, calls = 2502, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 753 [2022-07-12 10:52:22,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:22,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:52:22,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:52:22,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:52:22,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:52:22,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:52:22,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:52:22,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:52:22,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (1/1) ... [2022-07-12 10:52:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:52:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:22,172 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) [2022-07-12 10:52:22,198 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 [2022-07-12 10:52:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2022-07-12 10:52:22,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2022-07-12 10:52:22,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:52:22,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:52:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:52:22,220 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:52:22,220 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:52:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:52:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:52:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:52:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:52:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:52:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:52:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:52:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:52:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:52:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:52:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:52:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:52:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:52:22,224 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:52:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:52:22,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:52:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:52:22,225 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:52:22,225 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:52:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:52:22,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:52:22,425 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:52:22,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:52:23,469 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:52:23,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:52:23,476 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:52:23,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:23 BoogieIcfgContainer [2022-07-12 10:52:23,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:52:23,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:52:23,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:52:23,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:52:23,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:52:19" (1/3) ... [2022-07-12 10:52:23,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3698c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:23, skipping insertion in model container [2022-07-12 10:52:23,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:21" (2/3) ... [2022-07-12 10:52:23,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3698c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:23, skipping insertion in model container [2022-07-12 10:52:23,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:23" (3/3) ... [2022-07-12 10:52:23,486 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2022-07-12 10:52:23,499 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:52:23,500 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:52:23,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:52:23,567 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@24a92d2d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49308680 [2022-07-12 10:52:23,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:52:23,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-12 10:52:23,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 10:52:23,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:23,581 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-12 10:52:23,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:23,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:23,588 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2022-07-12 10:52:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:23,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043434186] [2022-07-12 10:52:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:52:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:52:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:24,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:52:24,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:24,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043434186] [2022-07-12 10:52:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043434186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:24,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:24,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:52:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359863567] [2022-07-12 10:52:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:24,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:52:24,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:52:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:52:24,382 INFO L87 Difference]: Start difference. First operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 10:52:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:24,699 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2022-07-12 10:52:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:52:24,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2022-07-12 10:52:24,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:24,712 INFO L225 Difference]: With dead ends: 158 [2022-07-12 10:52:24,712 INFO L226 Difference]: Without dead ends: 85 [2022-07-12 10:52:24,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:24,724 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 97 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:24,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 111 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-12 10:52:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-07-12 10:52:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 10:52:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2022-07-12 10:52:24,800 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2022-07-12 10:52:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:24,801 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2022-07-12 10:52:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 10:52:24,802 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2022-07-12 10:52:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 10:52:24,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:24,809 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-12 10:52:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:52:24,809 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:24,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:24,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2022-07-12 10:52:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:24,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252115306] [2022-07-12 10:52:24,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:24,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 10:52:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:52:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:25,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:25,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252115306] [2022-07-12 10:52:25,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252115306] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:25,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132396894] [2022-07-12 10:52:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:25,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:25,174 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) [2022-07-12 10:52:25,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:52:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:25,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:52:25,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 10:52:25,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:25,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132396894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:25,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:25,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:52:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889820104] [2022-07-12 10:52:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:52:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:52:25,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:25,823 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 10:52:25,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:25,932 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2022-07-12 10:52:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2022-07-12 10:52:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:25,935 INFO L225 Difference]: With dead ends: 139 [2022-07-12 10:52:25,935 INFO L226 Difference]: Without dead ends: 82 [2022-07-12 10:52:25,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:52:25,938 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 116 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:25,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 222 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:52:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-12 10:52:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-07-12 10:52:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2022-07-12 10:52:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-07-12 10:52:25,961 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2022-07-12 10:52:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-07-12 10:52:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 10:52:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-07-12 10:52:25,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 10:52:25,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:25,968 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:52:25,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 10:52:26,195 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 [2022-07-12 10:52:26,196 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:26,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2022-07-12 10:52:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:26,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988399] [2022-07-12 10:52:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:52:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:26,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:26,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988399] [2022-07-12 10:52:26,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:26,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773522385] [2022-07-12 10:52:26,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:26,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:26,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:26,616 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) [2022-07-12 10:52:26,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:52:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:27,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:27,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:27,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:27,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773522385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:27,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:27,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-07-12 10:52:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104949049] [2022-07-12 10:52:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:52:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:52:27,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:52:27,214 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 10:52:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:27,454 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2022-07-12 10:52:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:52:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2022-07-12 10:52:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:27,456 INFO L225 Difference]: With dead ends: 105 [2022-07-12 10:52:27,456 INFO L226 Difference]: Without dead ends: 79 [2022-07-12 10:52:27,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:52:27,457 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 140 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:27,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 389 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:27,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-12 10:52:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-12 10:52:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 55 states have internal predecessors, (65), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 10:52:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-07-12 10:52:27,467 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 62 [2022-07-12 10:52:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:27,467 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-07-12 10:52:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 10:52:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-07-12 10:52:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 10:52:27,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:27,468 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-12 10:52:27,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:27,669 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 [2022-07-12 10:52:27,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash -218893667, now seen corresponding path program 1 times [2022-07-12 10:52:27,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:27,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528938308] [2022-07-12 10:52:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:27,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:52:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 10:52:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:52:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:52:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 10:52:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 10:52:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:28,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:28,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528938308] [2022-07-12 10:52:28,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528938308] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:28,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375118470] [2022-07-12 10:52:28,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:28,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:28,212 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) [2022-07-12 10:52:28,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:52:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:28,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-12 10:52:28,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:28,850 INFO L356 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2022-07-12 10:52:28,851 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 3 case distinctions, treesize of input 26 treesize of output 35 [2022-07-12 10:52:28,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:28,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 35 [2022-07-12 10:52:28,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 [2022-07-12 10:52:28,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 7 [2022-07-12 10:52:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 10:52:28,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:52:29,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 234402 treesize of output 231330 [2022-07-12 10:52:38,671 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 666 DAG size of output: 666 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)