./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../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 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_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.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:34:50,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:34:50,332 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-12 08:34:50,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:34:50,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:34:50,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:34:50,352 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:34:50,352 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:34:50,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:34:50,353 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:34:50,353 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:34:50,353 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:34:50,354 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:34:50,354 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:34:50,354 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:34:50,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:34:50,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:34:50,355 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:34:50,356 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:34:50,356 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:34:50,356 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:34:50,357 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:34:50,357 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:34:50,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:34:50,357 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:34:50,358 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:34:50,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:34:50,358 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:34:50,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:34:50,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:34:50,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:34:50,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:34:50,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:34:50,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:34:50,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:34:50,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:34:50,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:34:50,361 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:34:50,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:34:50,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5aa4df3bf07993e90fd6085d301926d2fe237de2ffd3a09881087885f4330551 [2024-11-12 08:34:50,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:34:50,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:34:50,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:34:50,598 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:34:50,599 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:34:50,600 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2024-11-12 08:34:51,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:34:52,363 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:34:52,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_erase_harness_negated.i [2024-11-12 08:34:52,409 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24f771a4/19bffc1b08334c1190a8747b28e75294/FLAGc3a49a35e [2024-11-12 08:34:52,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e24f771a4/19bffc1b08334c1190a8747b28e75294 [2024-11-12 08:34:52,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:34:52,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:34:52,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:34:52,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:34:52,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:34:52,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:34:52" (1/1) ... [2024-11-12 08:34:52,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43838672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:52, skipping insertion in model container [2024-11-12 08:34:52,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:34:52" (1/1) ... [2024-11-12 08:34:52,528 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:34:52,889 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] [2024-11-12 08:34:52,896 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] [2024-11-12 08:34:53,522 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,523 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,524 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,525 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,534 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,535 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,536 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,537 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,538 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,539 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,539 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,540 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,847 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,848 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,851 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,852 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,854 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,854 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,856 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,861 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,896 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,897 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:53,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:34:53,942 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:34:53,964 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] [2024-11-12 08:34:53,965 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] [2024-11-12 08:34:54,041 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,042 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,042 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,042 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,043 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,049 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,053 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,054 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,055 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,056 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,058 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,058 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,058 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,137 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,141 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,142 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,143 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,144 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,144 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,144 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,151 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,158 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7793-7804] [2024-11-12 08:34:54,176 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,176 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-12 08:34:54,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:34:54,402 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:34:54,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54 WrapperNode [2024-11-12 08:34:54,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:34:54,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:34:54,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:34:54,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:34:54,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,612 INFO L138 Inliner]: procedures = 678, calls = 1677, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 734 [2024-11-12 08:34:54,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:34:54,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:34:54,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:34:54,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:34:54,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,709 INFO L175 MemorySlicer]: Split 331 memory accesses to 6 slices as follows [238, 6, 2, 73, 9, 3]. 72 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 0, 2, 10, 5, 1]. The 243 writes are split as follows [232, 2, 0, 6, 2, 1]. [2024-11-12 08:34:54,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:34:54,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:34:54,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:34:54,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:34:54,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (1/1) ... [2024-11-12 08:34:54,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:34:54,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:34:54,833 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) [2024-11-12 08:34:54,847 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 [2024-11-12 08:34:54,901 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2024-11-12 08:34:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-12 08:34:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-12 08:34:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-12 08:34:54,902 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-12 08:34:54,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:34:54,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 08:34:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 08:34:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-12 08:34:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-12 08:34:54,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-12 08:34:54,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 08:34:54,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint8_t [2024-11-12 08:34:54,905 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint8_t [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-12 08:34:54,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-12 08:34:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-12 08:34:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:34:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:34:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-12 08:34:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-12 08:34:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-12 08:34:54,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-12 08:34:54,906 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-12 08:34:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-12 08:34:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-12 08:34:54,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-12 08:34:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-12 08:34:54,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-12 08:34:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-12 08:34:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-12 08:34:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-12 08:34:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-12 08:34:54,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-12 08:34:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-12 08:34:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-12 08:34:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-12 08:34:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-12 08:34:54,909 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-12 08:34:54,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-12 08:34:54,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-12 08:34:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-12 08:34:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-12 08:34:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-12 08:34:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-12 08:34:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-12 08:34:54,911 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-12 08:34:54,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-12 08:34:54,912 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2024-11-12 08:34:54,912 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-12 08:34:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-12 08:34:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-12 08:34:54,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 08:34:54,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-12 08:34:55,171 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:34:55,174 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:35:01,898 INFO L? ?]: Removed 142 outVars from TransFormulas that were not future-live. [2024-11-12 08:35:01,898 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:35:01,918 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:35:01,918 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:35:01,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:35:01 BoogieIcfgContainer [2024-11-12 08:35:01,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:35:01,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:35:01,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:35:01,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:35:01,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:34:52" (1/3) ... [2024-11-12 08:35:01,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2253f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:35:01, skipping insertion in model container [2024-11-12 08:35:01,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:34:54" (2/3) ... [2024-11-12 08:35:01,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2253f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:35:01, skipping insertion in model container [2024-11-12 08:35:01,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:35:01" (3/3) ... [2024-11-12 08:35:01,927 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_erase_harness_negated.i [2024-11-12 08:35:01,942 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:35:01,943 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:35:02,009 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:35:02,014 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;@7ce9fbfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:35:02,015 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 08:35:02,019 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) [2024-11-12 08:35:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-12 08:35:02,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 08:35:02,028 INFO L218 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] [2024-11-12 08:35:02,029 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 08:35:02,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:35:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash 939077441, now seen corresponding path program 1 times [2024-11-12 08:35:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:35:02,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418690787] [2024-11-12 08:35:02,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:35:02,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:35:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:07,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 08:35:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:07,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-12 08:35:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:07,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-12 08:35:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-12 08:35:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-12 08:35:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 08:35:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-12 08:35:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 08:35:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-12 08:35:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-12 08:35:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 08:35:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-12 08:35:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 08:35:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-12 08:35:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-12 08:35:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:35:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418690787] [2024-11-12 08:35:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418690787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:35:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:35:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 08:35:08,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329401880] [2024-11-12 08:35:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:35:08,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 08:35:08,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:35:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 08:35:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 08:35:08,597 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) [2024-11-12 08:35:12,674 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 [] [2024-11-12 08:35:17,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 08:35:24,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 08:35:24,553 INFO L93 Difference]: Finished difference Result 545 states and 839 transitions. [2024-11-12 08:35:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 08:35:24,556 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 [2024-11-12 08:35:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 08:35:24,566 INFO L225 Difference]: With dead ends: 545 [2024-11-12 08:35:24,566 INFO L226 Difference]: Without dead ends: 295 [2024-11-12 08:35:24,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 08:35:24,573 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 159 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 246 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s 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, 15.3s IncrementalHoareTripleChecker+Time [2024-11-12 08:35:24,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 398 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 372 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2024-11-12 08:35:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-12 08:35:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 249. [2024-11-12 08:35:24,628 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) [2024-11-12 08:35:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 340 transitions. [2024-11-12 08:35:24,632 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 340 transitions. Word has length 87 [2024-11-12 08:35:24,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 08:35:24,633 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 340 transitions. [2024-11-12 08:35:24,633 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) [2024-11-12 08:35:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 340 transitions. [2024-11-12 08:35:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-12 08:35:24,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 08:35:24,636 INFO L218 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] [2024-11-12 08:35:24,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:35:24,636 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 08:35:24,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:35:24,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1387993283, now seen corresponding path program 1 times [2024-11-12 08:35:24,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:35:24,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498010515] [2024-11-12 08:35:24,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:35:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:35:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 08:35:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-12 08:35:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-12 08:35:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-12 08:35:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-12 08:35:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:31,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 08:35:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-12 08:35:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 08:35:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-12 08:35:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-12 08:35:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 08:35:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-12 08:35:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 08:35:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-12 08:35:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:35:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-12 08:35:32,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:35:32,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498010515] [2024-11-12 08:35:32,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498010515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:35:32,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:35:32,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 08:35:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772735606] [2024-11-12 08:35:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:35:32,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 08:35:32,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:35:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 08:35:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 08:35:32,489 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) [2024-11-12 08:35:36,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 08:35:40,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 08:36:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 08:36:02,679 INFO L93 Difference]: Finished difference Result 303 states and 439 transitions. [2024-11-12 08:36:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 08:36:02,680 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 [2024-11-12 08:36:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 08:36:02,684 INFO L225 Difference]: With dead ends: 303 [2024-11-12 08:36:02,684 INFO L226 Difference]: Without dead ends: 301 [2024-11-12 08:36:02,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-12 08:36:02,686 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 168 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 253 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2024-11-12 08:36:02,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 1049 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1136 Invalid, 2 Unknown, 0 Unchecked, 27.0s Time] [2024-11-12 08:36:02,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-12 08:36:02,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 256. [2024-11-12 08:36:02,709 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) [2024-11-12 08:36:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 364 transitions. [2024-11-12 08:36:02,711 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 364 transitions. Word has length 87 [2024-11-12 08:36:02,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 08:36:02,712 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 364 transitions. [2024-11-12 08:36:02,712 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) [2024-11-12 08:36:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 364 transitions. [2024-11-12 08:36:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-12 08:36:02,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 08:36:02,714 INFO L218 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] [2024-11-12 08:36:02,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:36:02,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 08:36:02,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:36:02,715 INFO L85 PathProgramCache]: Analyzing trace with hash 481193347, now seen corresponding path program 1 times [2024-11-12 08:36:02,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:36:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204606992] [2024-11-12 08:36:02,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:36:02,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:36:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:08,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 08:36:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:08,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-12 08:36:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:08,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-12 08:36:08,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:09,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-12 08:36:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:09,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-12 08:36:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:09,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-12 08:36:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:09,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-12 08:36:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-12 08:36:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-12 08:36:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-12 08:36:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 08:36:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-12 08:36:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 08:36:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:10,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-12 08:36:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:11,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-12 08:36:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:11,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-12 08:36:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:11,783 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-12 08:36:11,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:36:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204606992] [2024-11-12 08:36:11,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204606992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 08:36:11,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521242545] [2024-11-12 08:36:11,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:36:11,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 08:36:11,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:36:11,789 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) [2024-11-12 08:36:11,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 08:36:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:36:16,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 4260 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 08:36:16,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 08:36:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-12 08:36:20,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 08:36:20,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521242545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:36:20,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 08:36:20,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2024-11-12 08:36:20,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256881951] [2024-11-12 08:36:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:36:20,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 08:36:20,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:36:20,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 08:36:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-11-12 08:36:20,120 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)