./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 35987657 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-?-3598765 [2022-07-21 09:27:38,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 09:27:38,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 09:27:38,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 09:27:38,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 09:27:38,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 09:27:38,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 09:27:38,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 09:27:38,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 09:27:38,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 09:27:38,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 09:27:38,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 09:27:38,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 09:27:38,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 09:27:38,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 09:27:38,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 09:27:38,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 09:27:38,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 09:27:38,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 09:27:38,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 09:27:38,237 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 09:27:38,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 09:27:38,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 09:27:38,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 09:27:38,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 09:27:38,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 09:27:38,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 09:27:38,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 09:27:38,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 09:27:38,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 09:27:38,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 09:27:38,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 09:27:38,253 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 09:27:38,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 09:27:38,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 09:27:38,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 09:27:38,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 09:27:38,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 09:27:38,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 09:27:38,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 09:27:38,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 09:27:38,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 09:27:38,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 09:27:38,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 09:27:38,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 09:27:38,293 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 09:27:38,293 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 09:27:38,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 09:27:38,294 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 09:27:38,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 09:27:38,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 09:27:38,295 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 09:27:38,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 09:27:38,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 09:27:38,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 09:27:38,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 09:27:38,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 09:27:38,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 09:27:38,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 09:27:38,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 09:27:38,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 09:27:38,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 09:27:38,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 09:27:38,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 09:27:38,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:27:38,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 09:27:38,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 09:27:38,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 09:27:38,300 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2c8100e1f648cee1922c84a2421989bafb670d4445ddc160c17e3cd878eaa49 [2022-07-21 09:27:38,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 09:27:38,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 09:27:38,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 09:27:38,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 09:27:38,622 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 09:27:38,624 INFO L432 ainManager$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 [2022-07-21 09:27:38,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caa97b7c/c9aa60ce67f64fd69e6595ee4d1d7ce0/FLAG21c87d156 [2022-07-21 09:27:39,323 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 09:27:39,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2022-07-21 09:27:39,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caa97b7c/c9aa60ce67f64fd69e6595ee4d1d7ce0/FLAG21c87d156 [2022-07-21 09:27:39,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8caa97b7c/c9aa60ce67f64fd69e6595ee4d1d7ce0 [2022-07-21 09:27:39,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 09:27:39,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 09:27:39,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 09:27:39,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 09:27:39,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 09:27:39,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:27:39" (1/1) ... [2022-07-21 09:27:39,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375acbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:39, skipping insertion in model container [2022-07-21 09:27:39,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 09:27:39" (1/1) ... [2022-07-21 09:27:39,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 09:27:39,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 09:27:39,863 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] [2022-07-21 09:27:39,870 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] [2022-07-21 09:27:40,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,573 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,574 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,575 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,586 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,590 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,593 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,594 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:40,829 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:27:40,830 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:27:40,831 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:27:40,832 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:27:40,833 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:27:40,834 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:27:40,834 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:27:40,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:27:40,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:27:40,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:27:40,927 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:27:41,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,006 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:27:41,113 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 09:27:41,137 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] [2022-07-21 09:27:41,139 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] [2022-07-21 09:27:41,201 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,203 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,205 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,206 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,206 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,214 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,216 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,217 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,217 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,265 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-21 09:27:41,266 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-21 09:27:41,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-21 09:27:41,268 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-21 09:27:41,269 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-21 09:27:41,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-21 09:27:41,270 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-21 09:27:41,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-21 09:27:41,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-21 09:27:41,271 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-21 09:27:41,298 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-21 09:27:41,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-21 09:27:41,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 09:27:41,650 INFO L208 MainTranslator]: Completed translation [2022-07-21 09:27:41,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41 WrapperNode [2022-07-21 09:27:41,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 09:27:41,652 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 09:27:41,652 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 09:27:41,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 09:27:41,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,866 INFO L137 Inliner]: procedures = 691, calls = 2502, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 753 [2022-07-21 09:27:41,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 09:27:41,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 09:27:41,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 09:27:41,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 09:27:41,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 09:27:41,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 09:27:41,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 09:27:41,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 09:27:41,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (1/1) ... [2022-07-21 09:27:41,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 09:27:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:41,992 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) [2022-07-21 09:27:42,018 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 [2022-07-21 09:27:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2022-07-21 09:27:42,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2022-07-21 09:27:42,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-21 09:27:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-21 09:27:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 09:27:42,033 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-21 09:27:42,033 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-21 09:27:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 09:27:42,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 09:27:42,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 09:27:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 09:27:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 09:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 09:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 09:27:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 09:27:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-21 09:27:42,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-21 09:27:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 09:27:42,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 09:27:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-21 09:27:42,038 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-21 09:27:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 09:27:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 09:27:42,249 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 09:27:42,251 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 09:27:43,216 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 09:27:43,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 09:27:43,221 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 09:27:43,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:27:43 BoogieIcfgContainer [2022-07-21 09:27:43,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 09:27:43,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 09:27:43,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 09:27:43,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 09:27:43,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 09:27:39" (1/3) ... [2022-07-21 09:27:43,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174b1c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:27:43, skipping insertion in model container [2022-07-21 09:27:43,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 09:27:41" (2/3) ... [2022-07-21 09:27:43,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174b1c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 09:27:43, skipping insertion in model container [2022-07-21 09:27:43,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 09:27:43" (3/3) ... [2022-07-21 09:27:43,230 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2022-07-21 09:27:43,241 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 09:27:43,241 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 09:27:43,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 09:27:43,303 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@65adc9dd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@afb37bf [2022-07-21 09:27:43,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 09:27:43,308 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) [2022-07-21 09:27:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 09:27:43,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:43,317 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] [2022-07-21 09:27:43,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:43,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:43,323 INFO L85 PathProgramCache]: Analyzing trace with hash 877800461, now seen corresponding path program 1 times [2022-07-21 09:27:43,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:43,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145677917] [2022-07-21 09:27:43,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:43,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:27:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 09:27:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:27:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 09:27:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:43,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:27:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:27:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 09:27:44,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145677917] [2022-07-21 09:27:44,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145677917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:44,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 09:27:44,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 09:27:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664466479] [2022-07-21 09:27:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:44,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 09:27:44,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 09:27:44,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 09:27:44,080 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) [2022-07-21 09:27:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:44,385 INFO L93 Difference]: Finished difference Result 158 states and 207 transitions. [2022-07-21 09:27:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 09:27:44,387 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 [2022-07-21 09:27:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:44,396 INFO L225 Difference]: With dead ends: 158 [2022-07-21 09:27:44,397 INFO L226 Difference]: Without dead ends: 85 [2022-07-21 09:27:44,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 09:27:44,403 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 [2022-07-21 09:27:44,404 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] [2022-07-21 09:27:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-21 09:27:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2022-07-21 09:27:44,435 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) [2022-07-21 09:27:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2022-07-21 09:27:44,438 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2022-07-21 09:27:44,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:44,439 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2022-07-21 09:27:44,439 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) [2022-07-21 09:27:44,439 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2022-07-21 09:27:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 09:27:44,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:44,442 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] [2022-07-21 09:27:44,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 09:27:44,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:44,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1602789575, now seen corresponding path program 1 times [2022-07-21 09:27:44,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:44,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708680337] [2022-07-21 09:27:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:44,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:27:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 09:27:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:27:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 09:27:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:27:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:27:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:27:44,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708680337] [2022-07-21 09:27:44,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708680337] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:44,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340777113] [2022-07-21 09:27:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:44,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:44,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:44,763 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) [2022-07-21 09:27:44,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 09:27:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:45,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 09:27:45,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:45,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 09:27:45,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:45,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340777113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:45,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:45,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-21 09:27:45,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789218299] [2022-07-21 09:27:45,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:45,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 09:27:45,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:45,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 09:27:45,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 09:27:45,398 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) [2022-07-21 09:27:45,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:45,497 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2022-07-21 09:27:45,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 09:27:45,498 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 [2022-07-21 09:27:45,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:45,501 INFO L225 Difference]: With dead ends: 139 [2022-07-21 09:27:45,502 INFO L226 Difference]: Without dead ends: 82 [2022-07-21 09:27:45,503 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 [2022-07-21 09:27:45,507 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 [2022-07-21 09:27:45,508 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] [2022-07-21 09:27:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-21 09:27:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-07-21 09:27:45,532 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) [2022-07-21 09:27:45,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2022-07-21 09:27:45,538 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2022-07-21 09:27:45,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:45,539 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2022-07-21 09:27:45,540 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) [2022-07-21 09:27:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2022-07-21 09:27:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 09:27:45,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:45,546 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] [2022-07-21 09:27:45,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:45,771 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 [2022-07-21 09:27:45,771 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:45,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:45,772 INFO L85 PathProgramCache]: Analyzing trace with hash -737763694, now seen corresponding path program 1 times [2022-07-21 09:27:45,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:45,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868158766] [2022-07-21 09:27:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:45,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:45,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:27:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 09:27:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:27:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:27:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:27:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 09:27:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:27:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:46,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868158766] [2022-07-21 09:27:46,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868158766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716374454] [2022-07-21 09:27:46,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:46,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:46,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:46,164 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) [2022-07-21 09:27:46,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 09:27:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:46,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 09:27:46,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:46,764 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:27:46,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 09:27:46,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716374454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 09:27:46,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 09:27:46,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-07-21 09:27:46,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907067201] [2022-07-21 09:27:46,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 09:27:46,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 09:27:46,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 09:27:46,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 09:27:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-21 09:27:46,767 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) [2022-07-21 09:27:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 09:27:46,990 INFO L93 Difference]: Finished difference Result 105 states and 129 transitions. [2022-07-21 09:27:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 09:27:46,991 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 [2022-07-21 09:27:46,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 09:27:46,992 INFO L225 Difference]: With dead ends: 105 [2022-07-21 09:27:46,992 INFO L226 Difference]: Without dead ends: 79 [2022-07-21 09:27:46,993 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 [2022-07-21 09:27:46,994 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 [2022-07-21 09:27:46,994 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] [2022-07-21 09:27:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-21 09:27:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-07-21 09:27:47,003 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) [2022-07-21 09:27:47,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2022-07-21 09:27:47,004 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 62 [2022-07-21 09:27:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 09:27:47,004 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2022-07-21 09:27:47,005 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) [2022-07-21 09:27:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2022-07-21 09:27:47,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 09:27:47,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 09:27:47,006 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] [2022-07-21 09:27:47,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 09:27:47,219 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 [2022-07-21 09:27:47,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 09:27:47,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 09:27:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash -218893667, now seen corresponding path program 1 times [2022-07-21 09:27:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 09:27:47,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963567612] [2022-07-21 09:27:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:47,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 09:27:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 09:27:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 09:27:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 09:27:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 09:27:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 09:27:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 09:27:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 09:27:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:47,813 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:27:47,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 09:27:47,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963567612] [2022-07-21 09:27:47,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963567612] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 09:27:47,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034460883] [2022-07-21 09:27:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 09:27:47,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 09:27:47,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 09:27:47,815 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) [2022-07-21 09:27:47,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 09:27:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 09:27:48,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-21 09:27:48,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 09:27:48,482 INFO L356 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2022-07-21 09:27:48,483 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 [2022-07-21 09:27:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 09:27:48,499 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 [2022-07-21 09:27:48,567 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 [2022-07-21 09:27:48,571 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 [2022-07-21 09:27:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 09:27:48,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 09:27:48,941 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 [2022-07-21 09:27:58,456 WARN L233 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 666 DAG size of output: 666 (called from [L 927] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)