./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.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 --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 5aa4df3bf07993e90fd6085d301926d2fe237de2ffd3a09881087885f4330551 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 09:50:57,836 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 09:50:57,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-20 09:50:57,878 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 09:50:57,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 09:50:57,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 09:50:57,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 09:50:57,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 09:50:57,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 09:50:57,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 09:50:57,900 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 09:50:57,901 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 09:50:57,901 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 09:50:57,902 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 09:50:57,902 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 09:50:57,902 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 09:50:57,903 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 09:50:57,903 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 09:50:57,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 09:50:57,903 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 09:50:57,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 09:50:57,904 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 09:50:57,905 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 09:50:57,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 09:50:57,905 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 09:50:57,905 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 09:50:57,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 09:50:57,906 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 09:50:57,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 09:50:57,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:50:57,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 09:50:57,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 09:50:57,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 09:50:57,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 09:50:57,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 09:50:57,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 09:50:57,909 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 09:50:57,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 09:50:57,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 09:50:57,909 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5aa4df3bf07993e90fd6085d301926d2fe237de2ffd3a09881087885f4330551 [2024-11-20 09:50:58,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 09:50:58,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 09:50:58,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 09:50:58,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 09:50:58,146 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 09:50:58,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2024-11-20 09:50:59,544 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 09:50:59,922 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 09:50:59,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2024-11-20 09:50:59,957 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a534fb20a/ed72bc595e72415b8ecfbc6919e6ef07/FLAG64c358c01 [2024-11-20 09:50:59,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a534fb20a/ed72bc595e72415b8ecfbc6919e6ef07 [2024-11-20 09:50:59,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 09:50:59,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 09:50:59,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 09:50:59,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 09:50:59,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 09:50:59,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:50:59" (1/1) ... [2024-11-20 09:50:59,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709880c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:50:59, skipping insertion in model container [2024-11-20 09:50:59,986 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:50:59" (1/1) ... [2024-11-20 09:51:00,107 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 09:51:00,336 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i[4494,4507] [2024-11-20 09:51:00,344 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i[4554,4567] [2024-11-20 09:51:00,918 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,919 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,920 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,921 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,922 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,935 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,938 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,941 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,941 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,943 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,944 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,945 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:00,945 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,282 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,283 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,289 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,293 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,306 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,306 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,317 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,329 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,411 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,412 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:51:01,463 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 09:51:01,480 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i[4494,4507] [2024-11-20 09:51:01,480 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i[4554,4567] [2024-11-20 09:51:01,514 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,515 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,515 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,515 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,516 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,521 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,521 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,522 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,522 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,523 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,641 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,645 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,647 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,650 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,651 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,652 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,652 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,660 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,668 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7793-7804] [2024-11-20 09:51:01,715 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,716 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-20 09:51:01,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 09:51:01,902 INFO L204 MainTranslator]: Completed translation [2024-11-20 09:51:01,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01 WrapperNode [2024-11-20 09:51:01,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 09:51:01,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 09:51:01,905 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 09:51:01,905 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 09:51:01,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:01,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,079 INFO L138 Inliner]: procedures = 678, calls = 1677, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 734 [2024-11-20 09:51:02,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 09:51:02,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 09:51:02,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 09:51:02,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 09:51:02,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,214 INFO L175 MemorySlicer]: Split 331 memory accesses to 6 slices as follows [238, 2, 3, 6, 73, 9]. 72 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 1, 0, 10, 5]. The 243 writes are split as follows [232, 0, 1, 2, 6, 2]. [2024-11-20 09:51:02,215 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,308 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 09:51:02,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 09:51:02,312 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 09:51:02,312 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 09:51:02,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (1/1) ... [2024-11-20 09:51:02,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 09:51:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:51:02,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 09:51:02,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 09:51:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2024-11-20 09:51:02,418 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2024-11-20 09:51:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 09:51:02,418 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-20 09:51:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-20 09:51:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-20 09:51:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-20 09:51:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-20 09:51:02,419 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-20 09:51:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-20 09:51:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-20 09:51:02,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-20 09:51:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-20 09:51:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-20 09:51:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-20 09:51:02,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 09:51:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 09:51:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 09:51:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 09:51:02,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 09:51:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 09:51:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-20 09:51:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-20 09:51:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 09:51:02,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 09:51:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 09:51:02,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint8_t [2024-11-20 09:51:02,423 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint8_t [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-20 09:51:02,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-20 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-20 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-20 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-20 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-20 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-20 09:51:02,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-20 09:51:02,424 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-20 09:51:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-20 09:51:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-20 09:51:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-20 09:51:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-20 09:51:02,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-20 09:51:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 09:51:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-20 09:51:02,426 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-20 09:51:02,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-20 09:51:02,427 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-20 09:51:02,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 09:51:02,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 09:51:02,671 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 09:51:02,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 09:51:09,027 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-11-20 09:51:09,027 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 09:51:09,051 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 09:51:09,052 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 09:51:09,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:51:09 BoogieIcfgContainer [2024-11-20 09:51:09,052 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 09:51:09,054 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 09:51:09,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 09:51:09,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 09:51:09,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:50:59" (1/3) ... [2024-11-20 09:51:09,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13451eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:51:09, skipping insertion in model container [2024-11-20 09:51:09,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:51:01" (2/3) ... [2024-11-20 09:51:09,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13451eaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:51:09, skipping insertion in model container [2024-11-20 09:51:09,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:51:09" (3/3) ... [2024-11-20 09:51:09,059 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_erase_harness_negated.i [2024-11-20 09:51:09,072 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 09:51:09,073 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 09:51:09,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 09:51:09,134 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@39f87460, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 09:51:09,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 09:51:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 144 states have (on average 1.1875) internal successors, (171), 145 states have internal predecessors, (171), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-20 09:51:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-20 09:51:09,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:51:09,167 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:51:09,168 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:51:09,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:51:09,173 INFO L85 PathProgramCache]: Analyzing trace with hash 939077441, now seen corresponding path program 1 times [2024-11-20 09:51:09,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:51:09,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667365166] [2024-11-20 09:51:09,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:51:09,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:51:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:51:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:51:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-20 09:51:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:51:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 09:51:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:14,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 09:51:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-20 09:51:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 09:51:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 09:51:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-20 09:51:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 09:51:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 09:51:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 09:51:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 09:51:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-20 09:51:15,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:51:15,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667365166] [2024-11-20 09:51:15,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667365166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:51:15,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:51:15,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 09:51:15,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003998565] [2024-11-20 09:51:15,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:51:15,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 09:51:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:51:15,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 09:51:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 09:51:15,238 INFO L87 Difference]: Start difference. First operand has 254 states, 144 states have (on average 1.1875) internal successors, (171), 145 states have internal predecessors, (171), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-20 09:51:19,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:51:23,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:51:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 09:51:31,017 INFO L93 Difference]: Finished difference Result 545 states and 839 transitions. [2024-11-20 09:51:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 09:51:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2024-11-20 09:51:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 09:51:31,029 INFO L225 Difference]: With dead ends: 545 [2024-11-20 09:51:31,029 INFO L226 Difference]: Without dead ends: 295 [2024-11-20 09:51:31,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 09:51:31,037 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 159 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2024-11-20 09:51:31,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 398 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 15.1s Time] [2024-11-20 09:51:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-20 09:51:31,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 249. [2024-11-20 09:51:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 141 states have internal predecessors, (165), 88 states have call successors, (88), 20 states have call predecessors, (88), 20 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-20 09:51:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 340 transitions. [2024-11-20 09:51:31,127 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 340 transitions. Word has length 87 [2024-11-20 09:51:31,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 09:51:31,128 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 340 transitions. [2024-11-20 09:51:31,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-20 09:51:31,129 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 340 transitions. [2024-11-20 09:51:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-20 09:51:31,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:51:31,132 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:51:31,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 09:51:31,133 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:51:31,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:51:31,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1387993283, now seen corresponding path program 1 times [2024-11-20 09:51:31,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:51:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969937243] [2024-11-20 09:51:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:51:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:51:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:37,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:51:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:37,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:51:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:37,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-20 09:51:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:51:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 09:51:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 09:51:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-20 09:51:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 09:51:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 09:51:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-20 09:51:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 09:51:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 09:51:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 09:51:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 09:51:38,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:51:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-20 09:51:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:51:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969937243] [2024-11-20 09:51:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969937243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:51:38,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 09:51:38,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 09:51:38,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411381756] [2024-11-20 09:51:38,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:51:38,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 09:51:38,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:51:38,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 09:51:38,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 09:51:38,912 INFO L87 Difference]: Start difference. First operand 249 states and 340 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-20 09:51:42,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:51:47,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-20 09:52:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 09:52:07,047 INFO L93 Difference]: Finished difference Result 303 states and 439 transitions. [2024-11-20 09:52:07,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 09:52:07,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 87 [2024-11-20 09:52:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 09:52:07,052 INFO L225 Difference]: With dead ends: 303 [2024-11-20 09:52:07,052 INFO L226 Difference]: Without dead ends: 301 [2024-11-20 09:52:07,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 09:52:07,054 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 168 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 247 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2024-11-20 09:52:07,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1051 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1132 Invalid, 2 Unknown, 0 Unchecked, 25.2s Time] [2024-11-20 09:52:07,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-20 09:52:07,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 256. [2024-11-20 09:52:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 144 states have (on average 1.1736111111111112) internal successors, (169), 146 states have internal predecessors, (169), 89 states have call successors, (89), 21 states have call predecessors, (89), 22 states have return successors, (106), 88 states have call predecessors, (106), 88 states have call successors, (106) [2024-11-20 09:52:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2024-11-20 09:52:07,103 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 87 [2024-11-20 09:52:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 09:52:07,103 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2024-11-20 09:52:07,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-20 09:52:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2024-11-20 09:52:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-20 09:52:07,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 09:52:07,114 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 09:52:07,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 09:52:07,115 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 09:52:07,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 09:52:07,115 INFO L85 PathProgramCache]: Analyzing trace with hash 481193347, now seen corresponding path program 1 times [2024-11-20 09:52:07,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 09:52:07,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683467397] [2024-11-20 09:52:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:52:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 09:52:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:52:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 09:52:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-20 09:52:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-20 09:52:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 09:52:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:13,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 09:52:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:14,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-20 09:52:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:14,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-20 09:52:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:14,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 09:52:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:15,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-20 09:52:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:15,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 09:52:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:15,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 09:52:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:15,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-20 09:52:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:15,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-20 09:52:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:16,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 09:52:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:16,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-20 09:52:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-20 09:52:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 09:52:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683467397] [2024-11-20 09:52:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683467397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 09:52:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714701753] [2024-11-20 09:52:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 09:52:16,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 09:52:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 09:52:16,196 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) [2024-11-20 09:52:16,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 09:52:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 09:52:20,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 4260 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-20 09:52:20,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 09:52:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-20 09:52:24,588 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 09:52:24,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714701753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 09:52:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 09:52:24,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-11-20 09:52:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597212693] [2024-11-20 09:52:24,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 09:52:24,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 09:52:24,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 09:52:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 09:52:24,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-11-20 09:52:24,598 INFO L87 Difference]: Start difference. First operand 256 states and 364 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16)