./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_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_swap_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 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:55:17,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:55:17,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-03-17 06:55:17,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:55:17,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:55:17,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:55:17,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:55:17,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:55:17,108 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:55:17,108 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:55:17,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:55:17,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:55:17,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:55:17,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:55:17,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:55:17,110 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:55:17,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:55:17,110 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:55:17,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:55:17,111 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 -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 [2025-03-17 06:55:17,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:55:17,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:55:17,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:55:17,342 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:55:17,342 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:55:17,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2025-03-17 06:55:18,486 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390eeb031/e63418cbf1fc456c95990f09c2b67b7f/FLAG253f46e92 [2025-03-17 06:55:18,916 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:55:18,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_harness.i [2025-03-17 06:55:18,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390eeb031/e63418cbf1fc456c95990f09c2b67b7f/FLAG253f46e92 [2025-03-17 06:55:18,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/390eeb031/e63418cbf1fc456c95990f09c2b67b7f [2025-03-17 06:55:18,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:55:18,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:55:18,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:55:18,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:55:18,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:55:18,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:55:18" (1/1) ... [2025-03-17 06:55:18,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513b7c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:18, skipping insertion in model container [2025-03-17 06:55:18,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:55:18" (1/1) ... [2025-03-17 06:55:19,042 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:55:19,224 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_swap_harness.i[4493,4506] [2025-03-17 06:55:19,230 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_swap_harness.i[4553,4566] [2025-03-17 06:55:19,701 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,702 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,702 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,703 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,704 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,711 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,712 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,713 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,713 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,716 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,717 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,717 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:19,717 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,017 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,018 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,024 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,032 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:55:20,103 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:55:20,112 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_swap_harness.i[4493,4506] [2025-03-17 06:55:20,112 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_swap_harness.i[4553,4566] [2025-03-17 06:55:20,156 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,157 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,157 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,157 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,158 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,162 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,163 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,163 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,163 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,164 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,164 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,165 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,165 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,252 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,253 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,254 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,257 WARN L1731 CHandler]: Possible shadowing of function index [2025-03-17 06:55:20,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7775-7786] [2025-03-17 06:55:20,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:55:20,417 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:55:20,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20 WrapperNode [2025-03-17 06:55:20,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:55:20,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:55:20,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:55:20,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:55:20,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,533 INFO L138 Inliner]: procedures = 680, calls = 1677, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 651 [2025-03-17 06:55:20,534 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:55:20,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:55:20,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:55:20,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:55:20,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,607 INFO L175 MemorySlicer]: Split 302 memory accesses to 7 slices as follows [238, 2, 9, 6, 5, 39, 3]. 79 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [6, 2, 5, 5, 2, 5, 1]. The 238 writes are split as follows [232, 0, 0, 1, 1, 3, 1]. [2025-03-17 06:55:20,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,637 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:55:20,666 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:55:20,666 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:55:20,666 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:55:20,667 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (1/1) ... [2025-03-17 06:55:20,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:55:20,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:20,701 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 06:55:20,709 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 06:55:20,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-03-17 06:55:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-03-17 06:55:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-03-17 06:55:20,728 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-17 06:55:20,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-03-17 06:55:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 06:55:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-03-17 06:55:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:55:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-03-17 06:55:20,729 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-03-17 06:55:20,729 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-03-17 06:55:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-03-17 06:55:20,731 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-03-17 06:55:20,731 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:55:20,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:55:20,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:55:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 06:55:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 06:55:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-17 06:55:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-17 06:55:20,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-17 06:55:21,022 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:55:21,024 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:55:21,067 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-03-17 06:55:21,104 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-03-17 06:55:21,133 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L267: havoc nondet_uint8_t_#t~nondet10#1; [2025-03-17 06:55:21,221 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 06:55:21,224 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-03-17 06:55:21,265 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3527: havoc #t~ret286; [2025-03-17 06:55:21,272 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L7396: havoc #t~ret682.base, #t~ret682.offset; [2025-03-17 06:55:26,537 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2025-03-17 06:55:26,537 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:55:26,549 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:55:26,549 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:55:26,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:55:26 BoogieIcfgContainer [2025-03-17 06:55:26,550 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:55:26,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:55:26,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:55:26,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:55:26,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:55:18" (1/3) ... [2025-03-17 06:55:26,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c386dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:55:26, skipping insertion in model container [2025-03-17 06:55:26,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:55:20" (2/3) ... [2025-03-17 06:55:26,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c386dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:55:26, skipping insertion in model container [2025-03-17 06:55:26,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:55:26" (3/3) ... [2025-03-17 06:55:26,569 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2025-03-17 06:55:26,593 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:55:26,598 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_swap_harness.i that has 16 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 06:55:26,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:55:26,667 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;@7584ff66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:55:26,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 06:55:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 95 states have (on average 1.168421052631579) internal successors, (111), 96 states have internal predecessors, (111), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2025-03-17 06:55:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 06:55:26,679 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:55:26,679 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2025-03-17 06:55:26,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:55:26,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:55:26,684 INFO L85 PathProgramCache]: Analyzing trace with hash -37826541, now seen corresponding path program 1 times [2025-03-17 06:55:26,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:55:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799428673] [2025-03-17 06:55:26,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:55:30,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:55:31,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:55:31,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:31,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 06:55:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:55:31,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799428673] [2025-03-17 06:55:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799428673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:55:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221776772] [2025-03-17 06:55:31,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:31,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:55:31,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:31,519 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 06:55:31,520 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 06:55:35,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:55:36,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:55:36,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:36,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:36,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 06:55:36,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:55:36,052 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-17 06:55:36,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:55:36,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221776772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:55:36,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:55:36,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 06:55:36,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628033604] [2025-03-17 06:55:36,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:55:36,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 06:55:36,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:55:36,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 06:55:36,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 06:55:36,073 INFO L87 Difference]: Start difference. First operand has 173 states, 95 states have (on average 1.168421052631579) internal successors, (111), 96 states have internal predecessors, (111), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 06:55:36,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:55:36,116 INFO L93 Difference]: Finished difference Result 340 states and 502 transitions. [2025-03-17 06:55:36,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 06:55:36,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 68 [2025-03-17 06:55:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:55:36,124 INFO L225 Difference]: With dead ends: 340 [2025-03-17 06:55:36,127 INFO L226 Difference]: Without dead ends: 170 [2025-03-17 06:55:36,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 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 06:55:36,134 INFO L435 NwaCegarLoop]: 231 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, 231 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 06:55:36,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 06:55:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-03-17 06:55:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-03-17 06:55:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 94 states have internal predecessors, (107), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-03-17 06:55:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2025-03-17 06:55:36,181 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 68 [2025-03-17 06:55:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:55:36,182 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2025-03-17 06:55:36,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-03-17 06:55:36,182 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2025-03-17 06:55:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 06:55:36,185 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:55:36,186 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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] [2025-03-17 06:55:36,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 06:55:36,386 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 06:55:36,387 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:55:36,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:55:36,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1679548342, now seen corresponding path program 1 times [2025-03-17 06:55:36,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:55:36,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752600851] [2025-03-17 06:55:36,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:55:40,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:55:40,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:55:40,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:40,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:41,175 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2025-03-17 06:55:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:55:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752600851] [2025-03-17 06:55:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752600851] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:55:41,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805232017] [2025-03-17 06:55:41,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:41,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:55:41,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:41,181 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 06:55:41,182 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 06:55:45,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 06:55:45,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 06:55:45,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:45,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:45,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 4018 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 06:55:45,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:55:46,202 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-03-17 06:55:46,203 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:55:46,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805232017] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:55:46,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:55:46,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-03-17 06:55:46,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960468915] [2025-03-17 06:55:46,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:55:46,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 06:55:46,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:55:46,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 06:55:46,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:55:46,204 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-17 06:55:47,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:55:47,021 INFO L93 Difference]: Finished difference Result 306 states and 423 transitions. [2025-03-17 06:55:47,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 06:55:47,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 68 [2025-03-17 06:55:47,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:55:47,025 INFO L225 Difference]: With dead ends: 306 [2025-03-17 06:55:47,025 INFO L226 Difference]: Without dead ends: 172 [2025-03-17 06:55:47,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-17 06:55:47,027 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 36 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 06:55:47,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 751 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 06:55:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-17 06:55:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-03-17 06:55:47,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 94 states have (on average 1.148936170212766) internal successors, (108), 96 states have internal predecessors, (108), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2025-03-17 06:55:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 237 transitions. [2025-03-17 06:55:47,048 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 237 transitions. Word has length 68 [2025-03-17 06:55:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:55:47,048 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 237 transitions. [2025-03-17 06:55:47,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-03-17 06:55:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 237 transitions. [2025-03-17 06:55:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-17 06:55:47,049 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:55:47,049 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2025-03-17 06:55:47,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 06:55:47,250 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 06:55:47,251 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:55:47,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:55:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1386579897, now seen corresponding path program 1 times [2025-03-17 06:55:47,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:55:47,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729939623] [2025-03-17 06:55:47,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:55:50,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:55:50,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:55:50,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:50,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2025-03-17 06:55:53,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:55:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729939623] [2025-03-17 06:55:53,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729939623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:55:53,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229806247] [2025-03-17 06:55:53,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:55:53,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:55:53,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:55:53,283 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 06:55:53,284 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 06:55:57,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 06:55:57,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 06:55:57,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:55:57,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:55:57,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 4145 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 06:55:57,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 06:55:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-03-17 06:55:59,051 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 06:55:59,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229806247] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:55:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 06:55:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2025-03-17 06:55:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729237730] [2025-03-17 06:55:59,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:55:59,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 06:55:59,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:55:59,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 06:55:59,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2025-03-17 06:55:59,054 INFO L87 Difference]: Start difference. First operand 172 states and 237 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-17 06:56:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 06:56:00,586 INFO L93 Difference]: Finished difference Result 317 states and 446 transitions. [2025-03-17 06:56:00,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 06:56:00,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 83 [2025-03-17 06:56:00,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 06:56:00,589 INFO L225 Difference]: With dead ends: 317 [2025-03-17 06:56:00,589 INFO L226 Difference]: Without dead ends: 184 [2025-03-17 06:56:00,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2025-03-17 06:56:00,590 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 46 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 06:56:00,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1146 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 06:56:00,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2025-03-17 06:56:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2025-03-17 06:56:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 100 states have (on average 1.15) internal successors, (115), 102 states have internal predecessors, (115), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2025-03-17 06:56:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 254 transitions. [2025-03-17 06:56:00,607 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 254 transitions. Word has length 83 [2025-03-17 06:56:00,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 06:56:00,608 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 254 transitions. [2025-03-17 06:56:00,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2025-03-17 06:56:00,608 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 254 transitions. [2025-03-17 06:56:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-03-17 06:56:00,612 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 06:56:00,612 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2025-03-17 06:56:00,630 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 06:56:00,813 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 06:56:00,814 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 06:56:00,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:56:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1484158935, now seen corresponding path program 1 times [2025-03-17 06:56:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:56:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611193257] [2025-03-17 06:56:00,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:00,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:56:04,353 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-03-17 06:56:05,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-03-17 06:56:05,453 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:56:05,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:56:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-03-17 06:56:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:56:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611193257] [2025-03-17 06:56:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611193257] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 06:56:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478310565] [2025-03-17 06:56:11,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:56:11,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 06:56:11,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:56:11,994 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 06:56:11,997 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 06:56:16,128 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes.