./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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_pop_back_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 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 02:01:44,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 02:01:44,195 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-19 02:01:44,204 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 02:01:44,210 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 02:01:44,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 02:01:44,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 02:01:44,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 02:01:44,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 02:01:44,246 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 02:01:44,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 02:01:44,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 02:01:44,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 02:01:44,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 02:01:44,247 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 02:01:44,247 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 02:01:44,248 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 02:01:44,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 02:01:44,248 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 02:01:44,249 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 02:01:44,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 02:01:44,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 02:01:44,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 02:01:44,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 02:01:44,256 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 02:01:44,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 02:01:44,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 02:01:44,257 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 02:01:44,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 02:01:44,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 02:01:44,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 02:01:44,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 02:01:44,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 02:01:44,258 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 02:01:44,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 02:01:44,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 02:01:44,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 02:01:44,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 02:01:44,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 02:01:44,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2024-11-19 02:01:44,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 02:01:44,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 02:01:44,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 02:01:44,640 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 02:01:44,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 02:01:44,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-19 02:01:46,071 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 02:01:46,444 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 02:01:46,445 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-19 02:01:46,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0310963d8/6777d43d0d80469c8d01cbab060d1ad4/FLAGc543223cd [2024-11-19 02:01:46,494 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0310963d8/6777d43d0d80469c8d01cbab060d1ad4 [2024-11-19 02:01:46,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 02:01:46,498 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 02:01:46,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 02:01:46,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 02:01:46,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 02:01:46,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:46" (1/1) ... [2024-11-19 02:01:46,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64eb0178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:46, skipping insertion in model container [2024-11-19 02:01:46,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:01:46" (1/1) ... [2024-11-19 02:01:46,571 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 02:01:46,835 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_pop_back_harness.i[4497,4510] [2024-11-19 02:01:46,846 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_pop_back_harness.i[4557,4570] [2024-11-19 02:01:47,254 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,255 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,255 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,255 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,256 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,265 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,265 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,266 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,267 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,268 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,268 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,269 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,269 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,554 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,560 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 02:01:47,622 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 02:01:47,634 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_pop_back_harness.i[4497,4510] [2024-11-19 02:01:47,634 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_pop_back_harness.i[4557,4570] [2024-11-19 02:01:47,673 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,674 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,674 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,674 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,675 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,680 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,681 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,682 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,682 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,683 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,683 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,683 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,732 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,736 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-19 02:01:47,741 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2024-11-19 02:01:47,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 02:01:47,960 INFO L204 MainTranslator]: Completed translation [2024-11-19 02:01:47,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47 WrapperNode [2024-11-19 02:01:47,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 02:01:47,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 02:01:47,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 02:01:47,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 02:01:47,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,104 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,215 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2024-11-19 02:01:48,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 02:01:48,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 02:01:48,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 02:01:48,216 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 02:01:48,237 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,246 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,344 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 2, 3, 6, 62, 8]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 1, 0, 10, 5]. The 240 writes are split as follows [232, 0, 1, 2, 4, 1]. [2024-11-19 02:01:48,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,397 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,413 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 02:01:48,427 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 02:01:48,427 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 02:01:48,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 02:01:48,428 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (1/1) ... [2024-11-19 02:01:48,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 02:01:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 02:01:48,456 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) [2024-11-19 02:01:48,464 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 [2024-11-19 02:01:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 02:01:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-19 02:01:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-19 02:01:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-19 02:01:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-19 02:01:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-19 02:01:48,500 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-19 02:01:48,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-19 02:01:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-19 02:01:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-19 02:01:48,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-19 02:01:48,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-19 02:01:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-19 02:01:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-19 02:01:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 02:01:48,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 02:01:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 02:01:48,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 02:01:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 02:01:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 02:01:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 02:01:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-19 02:01:48,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 02:01:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-19 02:01:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-19 02:01:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-19 02:01:48,505 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-19 02:01:48,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-19 02:01:48,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-19 02:01:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 02:01:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-19 02:01:48,507 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 02:01:48,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-19 02:01:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-19 02:01:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 02:01:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-19 02:01:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-19 02:01:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-19 02:01:48,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 02:01:48,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 02:01:48,767 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 02:01:48,769 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 02:01:54,670 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-19 02:01:54,671 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 02:01:54,682 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 02:01:54,682 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 02:01:54,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:54 BoogieIcfgContainer [2024-11-19 02:01:54,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 02:01:54,684 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 02:01:54,684 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 02:01:54,687 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 02:01:54,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:01:46" (1/3) ... [2024-11-19 02:01:54,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d62c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:54, skipping insertion in model container [2024-11-19 02:01:54,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:01:47" (2/3) ... [2024-11-19 02:01:54,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d62c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:01:54, skipping insertion in model container [2024-11-19 02:01:54,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:01:54" (3/3) ... [2024-11-19 02:01:54,689 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2024-11-19 02:01:54,701 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 02:01:54,701 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 02:01:54,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 02:01:54,763 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;@6f6065a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 02:01:54,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 02:01:54,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-19 02:01:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-19 02:01:54,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:01:54,780 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 02:01:54,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:01:54,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:01:54,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1312837075, now seen corresponding path program 1 times [2024-11-19 02:01:54,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:01:54,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853467020] [2024-11-19 02:01:54,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:01:54,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:01:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-19 02:02:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:02:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853467020] [2024-11-19 02:02:00,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853467020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 02:02:00,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386397214] [2024-11-19 02:02:00,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:00,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 02:02:00,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 02:02:00,295 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) [2024-11-19 02:02:00,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 02:02:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:05,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 02:02:05,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 02:02:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-19 02:02:05,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 02:02:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386397214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 02:02:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 02:02:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 02:02:05,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122022928] [2024-11-19 02:02:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 02:02:05,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 02:02:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 02:02:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 02:02:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 02:02:05,846 INFO L87 Difference]: Start difference. First operand has 170 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 02:02:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 02:02:05,882 INFO L93 Difference]: Finished difference Result 333 states and 467 transitions. [2024-11-19 02:02:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 02:02:05,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 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 84 [2024-11-19 02:02:05,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 02:02:05,892 INFO L225 Difference]: With dead ends: 333 [2024-11-19 02:02:05,892 INFO L226 Difference]: Without dead ends: 165 [2024-11-19 02:02:05,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 02:02:05,901 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 02:02:05,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 02:02:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-19 02:02:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-19 02:02:05,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 100 states have (on average 1.18) internal successors, (118), 101 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-19 02:02:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2024-11-19 02:02:05,948 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 84 [2024-11-19 02:02:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 02:02:05,948 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2024-11-19 02:02:05,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 02:02:05,949 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2024-11-19 02:02:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-19 02:02:05,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:02:05,952 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 02:02:05,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 02:02:06,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 02:02:06,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:02:06,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:02:06,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1318781865, now seen corresponding path program 1 times [2024-11-19 02:02:06,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:02:06,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025984308] [2024-11-19 02:02:06,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:06,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:02:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-19 02:02:11,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:02:11,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025984308] [2024-11-19 02:02:11,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025984308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 02:02:11,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 02:02:11,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 02:02:11,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041711842] [2024-11-19 02:02:11,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 02:02:11,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 02:02:11,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 02:02:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 02:02:11,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 02:02:11,255 INFO L87 Difference]: Start difference. First operand 165 states and 213 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 02:02:11,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 02:02:11,328 INFO L93 Difference]: Finished difference Result 304 states and 395 transitions. [2024-11-19 02:02:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 02:02:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 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 84 [2024-11-19 02:02:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 02:02:11,330 INFO L225 Difference]: With dead ends: 304 [2024-11-19 02:02:11,330 INFO L226 Difference]: Without dead ends: 166 [2024-11-19 02:02:11,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 02:02:11,332 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 02:02:11,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 02:02:11,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-19 02:02:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-19 02:02:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-19 02:02:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2024-11-19 02:02:11,346 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 84 [2024-11-19 02:02:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 02:02:11,347 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2024-11-19 02:02:11,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-19 02:02:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2024-11-19 02:02:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-19 02:02:11,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:02:11,350 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 02:02:11,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 02:02:11,351 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:02:11,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:02:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -589675925, now seen corresponding path program 1 times [2024-11-19 02:02:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:02:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579603245] [2024-11-19 02:02:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:11,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:02:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:17,288 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-19 02:02:17,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:02:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579603245] [2024-11-19 02:02:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579603245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 02:02:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580360350] [2024-11-19 02:02:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 02:02:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 02:02:17,295 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) [2024-11-19 02:02:17,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 02:02:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:22,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 02:02:22,355 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 02:02:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-19 02:02:22,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 02:02:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580360350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 02:02:22,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 02:02:22,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-19 02:02:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625171462] [2024-11-19 02:02:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 02:02:22,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 02:02:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 02:02:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 02:02:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 02:02:22,929 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-11-19 02:02:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 02:02:24,724 INFO L93 Difference]: Finished difference Result 296 states and 390 transitions. [2024-11-19 02:02:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 02:02:24,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 84 [2024-11-19 02:02:24,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 02:02:24,732 INFO L225 Difference]: With dead ends: 296 [2024-11-19 02:02:24,733 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 02:02:24,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 02:02:24,734 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 227 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 02:02:24,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 648 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 02:02:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 02:02:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-19 02:02:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 104 states have internal predecessors, (120), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-19 02:02:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2024-11-19 02:02:24,753 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 84 [2024-11-19 02:02:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 02:02:24,753 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2024-11-19 02:02:24,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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) [2024-11-19 02:02:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2024-11-19 02:02:24,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-19 02:02:24,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:02:24,760 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 02:02:24,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 02:02:24,960 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 [2024-11-19 02:02:24,961 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:02:24,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:02:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash -911896437, now seen corresponding path program 1 times [2024-11-19 02:02:24,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:02:24,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874061158] [2024-11-19 02:02:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:24,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:02:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-19 02:02:30,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:02:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874061158] [2024-11-19 02:02:30,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874061158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 02:02:30,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568517111] [2024-11-19 02:02:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:30,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 02:02:30,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 02:02:30,419 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) [2024-11-19 02:02:30,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 02:02:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:02:35,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 02:02:35,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 02:02:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-19 02:02:36,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 02:02:36,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568517111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 02:02:36,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 02:02:36,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-19 02:02:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464080230] [2024-11-19 02:02:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 02:02:36,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 02:02:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 02:02:36,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 02:02:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-19 02:02:36,816 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-19 02:02:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 02:02:39,998 INFO L93 Difference]: Finished difference Result 288 states and 379 transitions. [2024-11-19 02:02:39,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 02:02:39,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 99 [2024-11-19 02:02:39,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 02:02:40,001 INFO L225 Difference]: With dead ends: 288 [2024-11-19 02:02:40,002 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 02:02:40,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-19 02:02:40,004 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 233 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-19 02:02:40,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 901 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-19 02:02:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 02:02:40,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-19 02:02:40,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 104 states have internal predecessors, (120), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2024-11-19 02:02:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2024-11-19 02:02:40,029 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 99 [2024-11-19 02:02:40,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 02:02:40,029 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2024-11-19 02:02:40,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2024-11-19 02:02:40,030 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2024-11-19 02:02:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-19 02:02:40,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:02:40,033 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, 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, 1, 1, 1] [2024-11-19 02:02:40,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 02:02:40,234 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 [2024-11-19 02:02:40,235 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:02:40,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:02:40,235 INFO L85 PathProgramCache]: Analyzing trace with hash 600120547, now seen corresponding path program 2 times [2024-11-19 02:02:40,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:02:40,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587415364] [2024-11-19 02:02:40,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 02:02:40,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:02:44,633 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 02:02:44,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 02:02:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-19 02:02:46,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:02:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587415364] [2024-11-19 02:02:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587415364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 02:02:46,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 02:02:46,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 02:02:46,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239046184] [2024-11-19 02:02:46,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 02:02:46,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 02:02:46,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 02:02:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 02:02:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 02:02:46,170 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-19 02:02:47,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 02:02:47,934 INFO L93 Difference]: Finished difference Result 285 states and 371 transitions. [2024-11-19 02:02:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 02:02:47,934 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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 114 [2024-11-19 02:02:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 02:02:47,937 INFO L225 Difference]: With dead ends: 285 [2024-11-19 02:02:47,937 INFO L226 Difference]: Without dead ends: 166 [2024-11-19 02:02:47,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-19 02:02:47,938 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 62 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-19 02:02:47,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1392 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-19 02:02:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-19 02:02:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-19 02:02:47,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-19 02:02:47,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-19 02:02:47,958 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 114 [2024-11-19 02:02:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 02:02:47,960 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-19 02:02:47,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 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) [2024-11-19 02:02:47,960 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-19 02:02:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-19 02:02:47,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 02:02:47,962 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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, 1, 1, 1] [2024-11-19 02:02:47,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 02:02:47,963 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 02:02:47,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 02:02:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1457916555, now seen corresponding path program 1 times [2024-11-19 02:02:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 02:02:47,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793503526] [2024-11-19 02:02:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:02:47,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 02:02:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 02:03:02,296 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-19 02:03:02,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 02:03:02,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793503526] [2024-11-19 02:03:02,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793503526] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 02:03:02,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615588033] [2024-11-19 02:03:02,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 02:03:02,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 02:03:02,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 02:03:02,298 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) [2024-11-19 02:03:02,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process