./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_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 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_pop_front_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:43:41,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:43:41,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:43:41,400 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:43:41,401 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:43:41,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:43:41,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:43:41,427 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:43:41,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:43:41,428 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:43:41,428 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:43:41,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:43:41,429 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:43:41,430 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:43:41,430 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:43:41,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:43:41,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:43:41,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:43:41,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:43:41,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:43:41,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:43:41,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:43:41,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:43:41,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:43:41,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:43:41,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:43:41,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:43:41,438 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:43:41,438 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:43:41,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:43:41,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:43:41,439 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:43:41,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:43:41,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:43:41,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2024-10-24 12:43:41,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:43:41,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:43:41,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:43:41,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:43:41,689 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:43:41,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2024-10-24 12:43:42,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:43:43,453 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:43:43,453 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2024-10-24 12:43:43,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7cce4c6/d8c5724a7bf14af1a42b8e7f1fe7e427/FLAG423bd0d19 [2024-10-24 12:43:43,495 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c7cce4c6/d8c5724a7bf14af1a42b8e7f1fe7e427 [2024-10-24 12:43:43,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:43:43,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:43:43,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:43:43,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:43:43,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:43:43,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:43:43" (1/1) ... [2024-10-24 12:43:43,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c13bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:43, skipping insertion in model container [2024-10-24 12:43:43,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:43:43" (1/1) ... [2024-10-24 12:43:43,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:43:43,813 WARN L248 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_pop_front_harness.i[4498,4511] [2024-10-24 12:43:43,819 WARN L248 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_pop_front_harness.i[4558,4571] [2024-10-24 12:43:44,400 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,401 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,401 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,402 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,403 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,411 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,411 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,412 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,413 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,415 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,416 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,417 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,418 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,741 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,749 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:43:44,822 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:43:44,835 WARN L248 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_pop_front_harness.i[4498,4511] [2024-10-24 12:43:44,836 WARN L248 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_pop_front_harness.i[4558,4571] [2024-10-24 12:43:44,878 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,879 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,879 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,879 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,880 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,884 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,884 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,885 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,885 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,886 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,886 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,886 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,887 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,946 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,948 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:43:44,952 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2024-10-24 12:43:44,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:43:45,162 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:43:45,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45 WrapperNode [2024-10-24 12:43:45,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:43:45,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:43:45,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:43:45,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:43:45,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,330 INFO L138 Inliner]: procedures = 680, calls = 1667, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 685 [2024-10-24 12:43:45,331 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:43:45,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:43:45,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:43:45,336 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:43:45,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,415 INFO L175 MemorySlicer]: Split 321 memory accesses to 6 slices as follows [2, 236, 11, 63, 6, 3]. 74 percent of accesses are in the largest equivalence class. The 254 initializations are split as follows [2, 236, 5, 10, 0, 1]. The 8 writes are split as follows [0, 0, 0, 5, 2, 1]. [2024-10-24 12:43:45,419 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,419 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,446 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:43:45,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:43:45,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:43:45,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:43:45,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (1/1) ... [2024-10-24 12:43:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:43:45,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:43:45,496 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) [2024-10-24 12:43:45,499 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 [2024-10-24 12:43:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2024-10-24 12:43:45,533 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2024-10-24 12:43:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:43:45,533 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-10-24 12:43:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-10-24 12:43:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-10-24 12:43:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-10-24 12:43:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:43:45,534 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:43:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:43:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:43:45,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:43:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:43:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:43:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:43:45,535 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-10-24 12:43:45,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-10-24 12:43:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:43:45,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:43:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:43:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:43:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:43:45,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:43:45,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:43:45,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:43:45,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:43:45,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:43:45,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:43:45,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:43:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:43:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:43:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:43:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:43:45,538 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-10-24 12:43:45,538 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-10-24 12:43:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:43:45,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:43:45,539 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:43:45,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:43:45,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:43:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-10-24 12:43:45,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:43:45,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2024-10-24 12:43:45,543 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2024-10-24 12:43:45,543 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-10-24 12:43:45,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:43:45,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:43:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:43:45,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:43:45,778 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:43:45,780 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:43:46,469 INFO L? ?]: Removed 123 outVars from TransFormulas that were not future-live. [2024-10-24 12:43:46,470 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:43:46,591 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:43:46,593 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:43:46,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:43:46 BoogieIcfgContainer [2024-10-24 12:43:46,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:43:46,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:43:46,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:43:46,598 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:43:46,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:43:43" (1/3) ... [2024-10-24 12:43:46,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738e6e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:43:46, skipping insertion in model container [2024-10-24 12:43:46,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:43:45" (2/3) ... [2024-10-24 12:43:46,599 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@738e6e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:43:46, skipping insertion in model container [2024-10-24 12:43:46,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:43:46" (3/3) ... [2024-10-24 12:43:46,601 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2024-10-24 12:43:46,616 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:43:46,616 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:43:46,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:43:46,702 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;@474d3b61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:43:46,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:43:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 94 states have internal predecessors, (115), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2024-10-24 12:43:46,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 12:43:46,716 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:43:46,717 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] [2024-10-24 12:43:46,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:43:46,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:43:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1745677824, now seen corresponding path program 1 times [2024-10-24 12:43:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:43:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279499942] [2024-10-24 12:43:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:43:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 12:43:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 12:43:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 12:43:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 12:43:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:43:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:43:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:43:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:43:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:43:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:43:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 12:43:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 12:43:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-24 12:43:47,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:43:47,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279499942] [2024-10-24 12:43:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279499942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:43:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:43:47,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:43:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719536950] [2024-10-24 12:43:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:43:47,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:43:47,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:43:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:43:47,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:43:47,421 INFO L87 Difference]: Start difference. First operand has 168 states, 93 states have (on average 1.2365591397849462) internal successors, (115), 94 states have internal predecessors, (115), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-24 12:43:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:43:48,453 INFO L93 Difference]: Finished difference Result 396 states and 632 transitions. [2024-10-24 12:43:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:43:48,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2024-10-24 12:43:48,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:43:48,468 INFO L225 Difference]: With dead ends: 396 [2024-10-24 12:43:48,468 INFO L226 Difference]: Without dead ends: 231 [2024-10-24 12:43:48,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:43:48,476 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 133 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:43:48,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 256 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:43:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-24 12:43:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 166. [2024-10-24 12:43:48,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 92 states have (on average 1.2173913043478262) internal successors, (112), 93 states have internal predecessors, (112), 57 states have call successors, (57), 16 states have call predecessors, (57), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2024-10-24 12:43:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2024-10-24 12:43:48,543 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 81 [2024-10-24 12:43:48,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:43:48,544 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2024-10-24 12:43:48,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-10-24 12:43:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2024-10-24 12:43:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 12:43:48,546 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:43:48,546 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] [2024-10-24 12:43:48,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:43:48,547 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:43:48,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:43:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -551797244, now seen corresponding path program 1 times [2024-10-24 12:43:48,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:43:48,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064135803] [2024-10-24 12:43:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:48,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:43:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 12:43:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 12:43:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 12:43:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 12:43:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:48,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:43:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:43:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:43:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-24 12:43:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-24 12:43:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 12:43:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 12:43:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 12:43:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:43:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:43:49,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064135803] [2024-10-24 12:43:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064135803] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:43:49,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495676589] [2024-10-24 12:43:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:49,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:49,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:43:49,106 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) [2024-10-24 12:43:49,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:43:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:49,562 INFO L255 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 12:43:49,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:43:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-24 12:43:49,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:43:49,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495676589] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:43:49,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:43:49,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-10-24 12:43:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040424901] [2024-10-24 12:43:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:43:49,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:43:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:43:49,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:43:49,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:43:49,637 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-24 12:43:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:43:49,927 INFO L93 Difference]: Finished difference Result 302 states and 423 transitions. [2024-10-24 12:43:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:43:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2024-10-24 12:43:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:43:49,930 INFO L225 Difference]: With dead ends: 302 [2024-10-24 12:43:49,931 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 12:43:49,933 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:43:49,934 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 34 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:43:49,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 683 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:43:49,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 12:43:49,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-24 12:43:49,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 95 states have internal predecessors, (113), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (66), 56 states have call predecessors, (66), 56 states have call successors, (66) [2024-10-24 12:43:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 236 transitions. [2024-10-24 12:43:49,978 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 236 transitions. Word has length 81 [2024-10-24 12:43:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:43:49,978 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 236 transitions. [2024-10-24 12:43:49,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-10-24 12:43:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 236 transitions. [2024-10-24 12:43:49,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-24 12:43:49,982 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:43:49,982 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] [2024-10-24 12:43:50,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:43:50,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:50,186 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:43:50,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:43:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1163169159, now seen corresponding path program 1 times [2024-10-24 12:43:50,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:43:50,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115547043] [2024-10-24 12:43:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:43:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 12:43:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 12:43:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 12:43:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 12:43:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:43:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:43:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:43:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:43:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-24 12:43:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:43:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:43:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-24 12:43:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:43:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-10-24 12:43:50,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:43:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115547043] [2024-10-24 12:43:50,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115547043] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:43:50,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344134459] [2024-10-24 12:43:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:50,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:50,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:43:50,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:43:50,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:43:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:51,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 2236 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 12:43:51,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:43:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-24 12:43:51,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:43:51,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344134459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:43:51,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:43:51,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-10-24 12:43:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109162583] [2024-10-24 12:43:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:43:51,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:43:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:43:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:43:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:43:51,119 INFO L87 Difference]: Start difference. First operand 168 states and 236 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 12:43:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:43:51,499 INFO L93 Difference]: Finished difference Result 295 states and 418 transitions. [2024-10-24 12:43:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 12:43:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2024-10-24 12:43:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:43:51,501 INFO L225 Difference]: With dead ends: 295 [2024-10-24 12:43:51,502 INFO L226 Difference]: Without dead ends: 168 [2024-10-24 12:43:51,502 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-10-24 12:43:51,503 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 74 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:43:51,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 989 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:43:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-24 12:43:51,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-24 12:43:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 95 states have internal predecessors, (113), 57 states have call successors, (57), 16 states have call predecessors, (57), 17 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2024-10-24 12:43:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 233 transitions. [2024-10-24 12:43:51,533 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 233 transitions. Word has length 94 [2024-10-24 12:43:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:43:51,534 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 233 transitions. [2024-10-24 12:43:51,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 12:43:51,534 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 233 transitions. [2024-10-24 12:43:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-10-24 12:43:51,538 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:43:51,538 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:43:51,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:43:51,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 12:43:51,743 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:43:51,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:43:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -733545236, now seen corresponding path program 2 times [2024-10-24 12:43:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:43:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400976124] [2024-10-24 12:43:51,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:43:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-24 12:43:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-24 12:43:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-24 12:43:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-24 12:43:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-24 12:43:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:43:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:43:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:43:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 12:43:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:43:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 12:43:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-24 12:43:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-24 12:43:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-24 12:43:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-24 12:43:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-24 12:43:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:43:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400976124] [2024-10-24 12:43:52,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400976124] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:43:52,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118236451] [2024-10-24 12:43:52,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:43:52,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:52,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:43:52,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:43:52,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:43:52,909 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:43:52,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:43:52,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 2355 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 12:43:52,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:43:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-10-24 12:43:53,034 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:43:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118236451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:43:53,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:43:53,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2024-10-24 12:43:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086809471] [2024-10-24 12:43:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:43:53,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:43:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:43:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:43:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-10-24 12:43:53,036 INFO L87 Difference]: Start difference. First operand 168 states and 233 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 12:43:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:43:53,457 INFO L93 Difference]: Finished difference Result 303 states and 427 transitions. [2024-10-24 12:43:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:43:53,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 107 [2024-10-24 12:43:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:43:53,459 INFO L225 Difference]: With dead ends: 303 [2024-10-24 12:43:53,459 INFO L226 Difference]: Without dead ends: 179 [2024-10-24 12:43:53,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-10-24 12:43:53,460 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 81 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:43:53,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1346 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:43:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-24 12:43:53,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-10-24 12:43:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 100 states have internal predecessors, (119), 62 states have call successors, (62), 17 states have call predecessors, (62), 18 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2024-10-24 12:43:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 249 transitions. [2024-10-24 12:43:53,490 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 249 transitions. Word has length 107 [2024-10-24 12:43:53,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:43:53,490 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 249 transitions. [2024-10-24 12:43:53,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-10-24 12:43:53,491 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 249 transitions. [2024-10-24 12:43:53,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-24 12:43:53,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:43:53,498 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2024-10-24 12:43:53,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:43:53,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:53,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:43:53,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:43:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1949226056, now seen corresponding path program 1 times [2024-10-24 12:43:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:43:53,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653683366] [2024-10-24 12:43:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:43:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 12:43:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272051838] [2024-10-24 12:43:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:43:54,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:43:54,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:43:54,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:43:54,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:43:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:43:56,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 260 conjuncts are in the unsatisfiable core [2024-10-24 12:43:56,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:43:56,783 INFO L349 Elim1Store]: treesize reduction 37, result has 33.9 percent of original size [2024-10-24 12:43:56,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 39 [2024-10-24 12:43:56,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 12:43:56,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:43:56,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-10-24 12:43:57,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 12:43:58,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:43:59,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 43 [2024-10-24 12:44:03,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 12:44:04,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 43 [2024-10-24 12:44:14,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2024-10-24 12:44:15,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 55 [2024-10-24 12:44:37,183 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:44:37,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 3 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 105 case distinctions, treesize of input 199 treesize of output 419 [2024-10-24 12:44:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 85 proven. 66 refuted. 4 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-24 12:44:39,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:44:50,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:44:50,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653683366] [2024-10-24 12:44:50,841 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 12:44:50,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272051838] [2024-10-24 12:44:50,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272051838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:44:50,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:44:50,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2024-10-24 12:44:50,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144909915] [2024-10-24 12:44:50,841 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 12:44:50,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-24 12:44:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:44:50,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-24 12:44:50,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=6067, Unknown=5, NotChecked=0, Total=6480 [2024-10-24 12:44:50,846 INFO L87 Difference]: Start difference. First operand 179 states and 249 transitions. Second operand has 68 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 48 states have internal predecessors, (84), 20 states have call successors, (24), 11 states have call predecessors, (24), 17 states have return successors, (21), 19 states have call predecessors, (21), 17 states have call successors, (21) [2024-10-24 12:44:58,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:45:06,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]