./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 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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 0.3.0-?-8fc3dc6-m [2025-03-17 06:53:29,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:53:29,349 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:53:29,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:53:29,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:53:29,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:53:29,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:53:29,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:53:29,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:53:29,379 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:53:29,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:53:29,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:53:29,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:53:29,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:53:29,379 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:53:29,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:53:29,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:53:29,380 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:53:29,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:53:29,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:53:29,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-17 06:53:29,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:53:29,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:53:29,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:53:29,631 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:53:29,631 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:53:29,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-03-17 06:53:30,772 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d291ec4/7a586a61718f427db72f2d24f1e71609/FLAG5cffbfcdd [2025-03-17 06:53:31,198 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:53:31,199 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2025-03-17 06:53:31,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d291ec4/7a586a61718f427db72f2d24f1e71609/FLAG5cffbfcdd [2025-03-17 06:53:31,338 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7d291ec4/7a586a61718f427db72f2d24f1e71609 [2025-03-17 06:53:31,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:53:31,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:53:31,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:53:31,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:53:31,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:53:31,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:53:31" (1/1) ... [2025-03-17 06:53:31,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358f26ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:31, skipping insertion in model container [2025-03-17 06:53:31,348 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:53:31" (1/1) ... [2025-03-17 06:53:31,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:53:31,582 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] [2025-03-17 06:53:31,590 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] [2025-03-17 06:53:32,079 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,079 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,080 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,080 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,081 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,093 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,094 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,095 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,098 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,100 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,101 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,101 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,101 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,418 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,422 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:53:32,488 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:53:32,498 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] [2025-03-17 06:53:32,499 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] [2025-03-17 06:53:32,539 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,539 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,540 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,541 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,541 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,548 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,549 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,550 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,550 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,551 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,552 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,611 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,618 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:53:32,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2025-03-17 06:53:32,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:53:32,775 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:53:32,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32 WrapperNode [2025-03-17 06:53:32,776 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:53:32,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:53:32,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:53:32,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:53:32,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,878 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2025-03-17 06:53:32,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:53:32,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:53:32,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:53:32,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:53:32,885 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,892 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,941 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 6, 2, 62, 3, 8]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 0, 2, 10, 1, 5]. The 240 writes are split as follows [232, 2, 0, 4, 1, 1]. [2025-03-17 06:53:32,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,976 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:53:32,991 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:53:32,991 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:53:32,991 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:53:32,993 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (1/1) ... [2025-03-17 06:53:32,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:53:33,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:33,021 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) [2025-03-17 06:53:33,024 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 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:53:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:53:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:53:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:53:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:53:33,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:53:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2025-03-17 06:53:33,042 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:53:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:53:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:53:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2025-03-17 06:53:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2025-03-17 06:53:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:53:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:53:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:53:33,291 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:53:33,293 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:53:33,343 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:53:33,393 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:53:33,401 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7390: havoc #t~ret682.base, #t~ret682.offset; [2025-03-17 06:53:33,519 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3268: call ULTIMATE.dealloc(~#required_size~0.base, ~#required_size~0.offset);havoc ~#required_size~0.base, ~#required_size~0.offset; [2025-03-17 06:53:33,526 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:53:38,870 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc nondet_size_t_#t~nondet6#1; [2025-03-17 06:53:39,142 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3445: havoc #t~ret230; [2025-03-17 06:53:39,143 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3432: havoc ~last_item_offset~1; [2025-03-17 06:53:39,210 INFO L? ?]: Removed 111 outVars from TransFormulas that were not future-live. [2025-03-17 06:53:39,210 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:53:39,222 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:53:39,223 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:53:39,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:53:39 BoogieIcfgContainer [2025-03-17 06:53:39,224 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:53:39,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:53:39,226 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:53:39,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:53:39,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:53:31" (1/3) ... [2025-03-17 06:53:39,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3c62e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:53:39, skipping insertion in model container [2025-03-17 06:53:39,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:53:32" (2/3) ... [2025-03-17 06:53:39,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3c62e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:53:39, skipping insertion in model container [2025-03-17 06:53:39,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:53:39" (3/3) ... [2025-03-17 06:53:39,231 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2025-03-17 06:53:39,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:53:39,244 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_back_harness.i that has 17 procedures, 164 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:53:39,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:53:39,300 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;@47fda86a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:53:39,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:53:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 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) [2025-03-17 06:53:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:53:39,314 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:39,314 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:53:39,315 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:39,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash -236045464, now seen corresponding path program 1 times [2025-03-17 06:53:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:39,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828376900] [2025-03-17 06:53:39,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:39,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:43,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:53:43,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:53:43,879 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:43,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 06:53:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:44,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828376900] [2025-03-17 06:53:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828376900] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:53:44,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447391439] [2025-03-17 06:53:44,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:44,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:44,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:44,312 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) [2025-03-17 06:53:44,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 06:53:48,581 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:53:49,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:53:49,002 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:49,002 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:49,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:53:49,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:53:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-17 06:53:49,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:53:49,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447391439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:49,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:53:49,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:53:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711290682] [2025-03-17 06:53:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:49,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:53:49,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:49,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:53:49,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:53:49,069 INFO L87 Difference]: Start difference. First operand has 164 states, 98 states have (on average 1.2040816326530612) internal successors, (118), 99 states have internal predecessors, (118), 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 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2025-03-17 06:53:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:53:49,107 INFO L93 Difference]: Finished difference Result 322 states and 454 transitions. [2025-03-17 06:53:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:53:49,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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 83 [2025-03-17 06:53:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:53:49,116 INFO L225 Difference]: With dead ends: 322 [2025-03-17 06:53:49,116 INFO L226 Difference]: Without dead ends: 161 [2025-03-17 06:53:49,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:53:49,123 INFO L435 NwaCegarLoop]: 212 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, 212 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 [2025-03-17 06:53:49,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:53:49,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-03-17 06:53:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2025-03-17 06:53:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1875) internal successors, (114), 97 states have internal predecessors, (114), 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) [2025-03-17 06:53:49,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2025-03-17 06:53:49,160 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 83 [2025-03-17 06:53:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:53:49,161 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2025-03-17 06:53:49,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2025-03-17 06:53:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2025-03-17 06:53:49,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:53:49,163 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:53:49,163 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:53:49,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 06:53:49,365 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 [2025-03-17 06:53:49,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:53:49,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:53:49,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1079764006, now seen corresponding path program 1 times [2025-03-17 06:53:49,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:53:49,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700026543] [2025-03-17 06:53:49,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:49,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:53:53,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:53:53,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:53:53,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:53,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 06:53:54,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:53:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700026543] [2025-03-17 06:53:54,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700026543] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:53:54,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726121058] [2025-03-17 06:53:54,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:53:54,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:53:54,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:53:54,618 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) [2025-03-17 06:53:54,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 06:53:58,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:53:59,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:53:59,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:53:59,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:53:59,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:53:59,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:53:59,711 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-03-17 06:53:59,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:53:59,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726121058] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:53:59,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:53:59,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:53:59,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220226696] [2025-03-17 06:53:59,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:53:59,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:53:59,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:53:59,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:53:59,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:53:59,714 INFO L87 Difference]: Start difference. First operand 161 states and 209 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2025-03-17 06:54:00,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:00,532 INFO L93 Difference]: Finished difference Result 288 states and 382 transitions. [2025-03-17 06:54:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:54:00,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 83 [2025-03-17 06:54:00,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:00,535 INFO L225 Difference]: With dead ends: 288 [2025-03-17 06:54:00,535 INFO L226 Difference]: Without dead ends: 163 [2025-03-17 06:54:00,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:54:00,537 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 35 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:00,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 698 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:54:00,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-17 06:54:00,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2025-03-17 06:54:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 99 states have internal predecessors, (115), 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) [2025-03-17 06:54:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 215 transitions. [2025-03-17 06:54:00,549 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 215 transitions. Word has length 83 [2025-03-17 06:54:00,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:00,549 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 215 transitions. [2025-03-17 06:54:00,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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) [2025-03-17 06:54:00,549 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 215 transitions. [2025-03-17 06:54:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-17 06:54:00,551 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:00,551 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:54:00,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 06:54:00,754 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,SelfDestructingSolverStorable1 [2025-03-17 06:54:00,754 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:00,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1843576255, now seen corresponding path program 1 times [2025-03-17 06:54:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50963920] [2025-03-17 06:54:00,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:00,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:04,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 06:54:04,560 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 06:54:04,560 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:04,561 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-03-17 06:54:05,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50963920] [2025-03-17 06:54:05,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50963920] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:54:05,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808942843] [2025-03-17 06:54:05,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:05,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:05,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:05,973 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) [2025-03-17 06:54:05,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 06:54:10,106 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-17 06:54:10,450 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-17 06:54:10,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:10,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:10,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:54:10,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:54:11,427 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-03-17 06:54:11,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:54:11,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808942843] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:11,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:54:11,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-17 06:54:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186828996] [2025-03-17 06:54:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:11,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:54:11,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:11,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:54:11,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-03-17 06:54:11,430 INFO L87 Difference]: Start difference. First operand 163 states and 215 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-17 06:54:12,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:12,654 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2025-03-17 06:54:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:54:12,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 98 [2025-03-17 06:54:12,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:12,656 INFO L225 Difference]: With dead ends: 280 [2025-03-17 06:54:12,656 INFO L226 Difference]: Without dead ends: 163 [2025-03-17 06:54:12,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-03-17 06:54:12,657 INFO L435 NwaCegarLoop]: 187 mSDtfsCounter, 53 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:12,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1026 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-17 06:54:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-17 06:54:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2025-03-17 06:54:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 99 states have internal predecessors, (115), 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) [2025-03-17 06:54:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2025-03-17 06:54:12,666 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 212 transitions. Word has length 98 [2025-03-17 06:54:12,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:12,666 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 212 transitions. [2025-03-17 06:54:12,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2025-03-17 06:54:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 212 transitions. [2025-03-17 06:54:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 06:54:12,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:12,667 INFO L218 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] [2025-03-17 06:54:12,682 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 06:54:12,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:12,868 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:12,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:12,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1724263346, now seen corresponding path program 2 times [2025-03-17 06:54:12,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:12,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857586773] [2025-03-17 06:54:12,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 06:54:12,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:16,502 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes. [2025-03-17 06:54:16,873 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 06:54:16,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 06:54:16,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-03-17 06:54:18,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:18,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857586773] [2025-03-17 06:54:18,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857586773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:54:18,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:54:18,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 06:54:18,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335206984] [2025-03-17 06:54:18,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:54:18,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 06:54:18,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:54:18,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 06:54:18,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 06:54:18,426 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 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) [2025-03-17 06:54:20,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:54:20,323 INFO L93 Difference]: Finished difference Result 277 states and 363 transitions. [2025-03-17 06:54:20,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 06:54:20,324 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 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 113 [2025-03-17 06:54:20,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:54:20,326 INFO L225 Difference]: With dead ends: 277 [2025-03-17 06:54:20,326 INFO L226 Difference]: Without dead ends: 161 [2025-03-17 06:54:20,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 06:54:20,327 INFO L435 NwaCegarLoop]: 184 mSDtfsCounter, 62 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-17 06:54:20,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1360 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-17 06:54:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-03-17 06:54:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2025-03-17 06:54:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 97 states have internal predecessors, (113), 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) [2025-03-17 06:54:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 208 transitions. [2025-03-17 06:54:20,338 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 208 transitions. Word has length 113 [2025-03-17 06:54:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:54:20,339 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 208 transitions. [2025-03-17 06:54:20,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 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) [2025-03-17 06:54:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 208 transitions. [2025-03-17 06:54:20,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-17 06:54:20,340 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:54:20,343 INFO L218 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] [2025-03-17 06:54:20,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 06:54:20,344 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:54:20,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:54:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2088188896, now seen corresponding path program 1 times [2025-03-17 06:54:20,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:54:20,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254502130] [2025-03-17 06:54:20,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:54:24,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes. [2025-03-17 06:54:27,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 143 of 143 statements. [2025-03-17 06:54:27,386 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:54:27,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:54:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-03-17 06:54:33,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:54:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254502130] [2025-03-17 06:54:33,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254502130] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:54:33,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125863885] [2025-03-17 06:54:33,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:54:33,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:54:33,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:54:33,844 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) [2025-03-17 06:54:33,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 06:54:38,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 143 statements into 1 equivalence classes.