./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:28:44,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:28:44,985 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:28:44,993 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:28:44,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:28:45,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:28:45,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:28:45,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:28:45,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:28:45,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:28:45,027 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:28:45,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:28:45,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:28:45,028 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:28:45,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:28:45,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:28:45,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:28:45,029 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:28:45,029 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:28:45,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:28:45,030 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 971edb75bb0f677639f0c3e5b019bf9afe7575a35e63ddba584727b568db50c6 [2025-02-08 01:28:45,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:28:45,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:28:45,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:28:45,312 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:28:45,312 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:28:45,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-02-08 01:28:46,639 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f05360a3/cad6471dc9eb4d2f8ab09d0eb89a3b5b/FLAG4c5f0b635 [2025-02-08 01:28:47,235 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:28:47,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i [2025-02-08 01:28:47,278 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f05360a3/cad6471dc9eb4d2f8ab09d0eb89a3b5b/FLAG4c5f0b635 [2025-02-08 01:28:47,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0f05360a3/cad6471dc9eb4d2f8ab09d0eb89a3b5b [2025-02-08 01:28:47,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:28:47,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:28:47,305 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:28:47,305 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:28:47,309 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:28:47,310 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:28:47" (1/1) ... [2025-02-08 01:28:47,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1e8b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:47, skipping insertion in model container [2025-02-08 01:28:47,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:28:47" (1/1) ... [2025-02-08 01:28:47,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:28:47,667 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2025-02-08 01:28:47,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2025-02-08 01:28:48,309 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,309 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,309 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,310 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,314 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,325 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,325 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,327 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,329 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,330 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,330 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,331 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,691 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,698 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:28:48,808 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:28:48,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4498,4511] [2025-02-08 01:28:48,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_pop_front_harness.i[4558,4571] [2025-02-08 01:28:48,905 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,905 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,906 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,907 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,907 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,918 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,919 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,923 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,924 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,924 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,925 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,925 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:48,925 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:49,038 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:49,046 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:28:49,054 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7765-7776] [2025-02-08 01:28:49,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:28:49,211 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:28:49,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49 WrapperNode [2025-02-08 01:28:49,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:28:49,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:28:49,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:28:49,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:28:49,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,350 INFO L138 Inliner]: procedures = 680, calls = 1679, calls flagged for inlining = 51, calls inlined = 10, statements flattened = 687 [2025-02-08 01:28:49,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:28:49,351 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:28:49,351 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:28:49,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:28:49,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,433 INFO L175 MemorySlicer]: Split 323 memory accesses to 6 slices as follows [238, 2, 63, 3, 6, 11]. 74 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 10, 1, 0, 5]. The 240 writes are split as follows [232, 0, 5, 1, 2, 0]. [2025-02-08 01:28:49,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,458 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:28:49,494 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:28:49,494 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:28:49,494 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:28:49,495 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (1/1) ... [2025-02-08 01:28:49,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:28:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:28:49,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 01:28:49,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 01:28:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure memmove_impl [2025-02-08 01:28:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure memmove_impl [2025-02-08 01:28:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:28:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:28:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:28:49,557 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:28:49,557 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:28:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:28:49,558 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:28:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:28:49,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:28:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:28:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:28:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:28:49,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:28:49,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:28:49,561 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:28:49,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:28:49,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:28:49,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:28:49,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:28:49,563 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:28:49,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure my_memmove [2025-02-08 01:28:49,563 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memmove [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_front [2025-02-08 01:28:49,563 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_front [2025-02-08 01:28:49,563 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:28:49,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:28:49,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:28:49,885 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:28:49,887 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:28:49,940 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:28:49,978 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:28:50,033 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3355: havoc #t~ret182#1; [2025-02-08 01:28:50,139 INFO L1324 $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; [2025-02-08 01:28:50,145 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:28:50,153 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7386: havoc #t~ret685.base, #t~ret685.offset; [2025-02-08 01:28:55,476 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc nondet_size_t_#t~nondet6#1;save_byte_from_array_#t~ret628#1 := nondet_size_t_#res#1;havoc nondet_size_t_#t~nondet6#1;assume { :end_inline_nondet_size_t } true;call write~int#4(save_byte_from_array_#t~ret628#1, save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8);havoc save_byte_from_array_#t~ret628#1;call save_byte_from_array_#t~mem629#1 := read~int#4(save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8); [2025-02-08 01:28:55,477 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7185-1: SUMMARY for call assume_abort_if_not((if 0 == (if save_byte_from_array_#t~mem629#1 % 18446744073709551616 < save_byte_from_array_~size#1 % 18446744073709551616 then 1 else 0) then 0 else 1)); srcloc: null [2025-02-08 01:28:55,477 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7185: havoc save_byte_from_array_#t~mem629#1;call save_byte_from_array_#t~mem630#1 := read~int#4(save_byte_from_array_~storage#1.base, save_byte_from_array_~storage#1.offset, 8);call save_byte_from_array_#t~mem631#1 := read~int#5(save_byte_from_array_~array#1.base, save_byte_from_array_~array#1.offset + (if save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 <= 9223372036854775807 then save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 else save_byte_from_array_#t~mem630#1 % 18446744073709551616 % 18446744073709551616 - 18446744073709551616), 1);call write~int#4(save_byte_from_array_#t~mem631#1, save_byte_from_array_~storage#1.base, 8 + save_byte_from_array_~storage#1.offset, 1);havoc save_byte_from_array_#t~mem630#1;havoc save_byte_from_array_#t~mem631#1; [2025-02-08 01:28:55,566 INFO L? ?]: Removed 118 outVars from TransFormulas that were not future-live. [2025-02-08 01:28:55,566 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:28:55,580 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:28:55,585 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:28:55,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:28:55 BoogieIcfgContainer [2025-02-08 01:28:55,586 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:28:55,588 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:28:55,591 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:28:55,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:28:55,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:28:47" (1/3) ... [2025-02-08 01:28:55,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726983be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:28:55, skipping insertion in model container [2025-02-08 01:28:55,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:28:49" (2/3) ... [2025-02-08 01:28:55,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@726983be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:28:55, skipping insertion in model container [2025-02-08 01:28:55,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:28:55" (3/3) ... [2025-02-08 01:28:55,599 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_front_harness.i [2025-02-08 01:28:55,615 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:28:55,617 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_front_harness.i that has 17 procedures, 179 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:28:55,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:28:55,690 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;@70159f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:28:55,692 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:28:55,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 106 states have internal predecessors, (123), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2025-02-08 01:28:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:28:55,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:28:55,712 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] [2025-02-08 01:28:55,712 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:28:55,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:28:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -398602130, now seen corresponding path program 1 times [2025-02-08 01:28:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:28:55,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690560597] [2025-02-08 01:28:55,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:28:55,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:00,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:01,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:01,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:01,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 01:29:01,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690560597] [2025-02-08 01:29:01,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690560597] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:01,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063422659] [2025-02-08 01:29:01,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:01,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:01,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:29:01,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 01:29:06,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:07,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:07,380 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:07,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:07,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:29:07,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-02-08 01:29:07,440 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063422659] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:07,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:29:07,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145641706] [2025-02-08 01:29:07,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:07,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:29:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:07,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:29:07,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:29:07,468 INFO L87 Difference]: Start difference. First operand has 179 states, 101 states have (on average 1.2178217821782178) internal successors, (123), 106 states have internal predecessors, (123), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) 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) [2025-02-08 01:29:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:07,527 INFO L93 Difference]: Finished difference Result 352 states and 497 transitions. [2025-02-08 01:29:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:29:07,529 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 [2025-02-08 01:29:07,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:07,539 INFO L225 Difference]: With dead ends: 352 [2025-02-08 01:29:07,540 INFO L226 Difference]: Without dead ends: 169 [2025-02-08 01:29:07,548 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 [2025-02-08 01:29:07,550 INFO L435 NwaCegarLoop]: 233 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, 233 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 [2025-02-08 01:29:07,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:29:07,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-02-08 01:29:07,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2025-02-08 01:29:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 97 states have (on average 1.175257731958763) internal successors, (114), 99 states have internal predecessors, (114), 55 states have call successors, (55), 16 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2025-02-08 01:29:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2025-02-08 01:29:07,611 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 83 [2025-02-08 01:29:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:07,611 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2025-02-08 01:29:07,612 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) [2025-02-08 01:29:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2025-02-08 01:29:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-02-08 01:29:07,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:07,615 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] [2025-02-08 01:29:07,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 01:29:07,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-08 01:29:07,817 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:07,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:07,818 INFO L85 PathProgramCache]: Analyzing trace with hash 917207340, now seen corresponding path program 1 times [2025-02-08 01:29:07,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:07,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217312093] [2025-02-08 01:29:07,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:07,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:11,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:12,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:12,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:12,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 01:29:13,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217312093] [2025-02-08 01:29:13,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217312093] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:13,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697781095] [2025-02-08 01:29:13,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:13,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:13,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:13,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:29:13,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 01:29:18,317 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-02-08 01:29:18,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-02-08 01:29:18,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:18,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:18,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:29:18,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-08 01:29:19,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697781095] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:19,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:29:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398385443] [2025-02-08 01:29:19,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:29:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:19,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:29:19,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:29:19,301 INFO L87 Difference]: Start difference. First operand 169 states and 222 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) [2025-02-08 01:29:20,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:20,434 INFO L93 Difference]: Finished difference Result 304 states and 413 transitions. [2025-02-08 01:29:20,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:29:20,435 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 [2025-02-08 01:29:20,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:20,441 INFO L225 Difference]: With dead ends: 304 [2025-02-08 01:29:20,442 INFO L226 Difference]: Without dead ends: 171 [2025-02-08 01:29:20,443 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 [2025-02-08 01:29:20,443 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 31 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:20,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 725 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 01:29:20,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-02-08 01:29:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2025-02-08 01:29:20,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 101 states have internal predecessors, (115), 55 states have call successors, (55), 16 states have call predecessors, (55), 17 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2025-02-08 01:29:20,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 233 transitions. [2025-02-08 01:29:20,462 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 233 transitions. Word has length 83 [2025-02-08 01:29:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:20,462 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 233 transitions. [2025-02-08 01:29:20,462 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) [2025-02-08 01:29:20,462 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 233 transitions. [2025-02-08 01:29:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 01:29:20,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:20,465 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] [2025-02-08 01:29:20,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-08 01:29:20,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:20,666 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:20,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:20,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2078606214, now seen corresponding path program 1 times [2025-02-08 01:29:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43119684] [2025-02-08 01:29:20,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:20,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:24,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:24,852 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:24,852 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:24,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-08 01:29:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:26,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43119684] [2025-02-08 01:29:26,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43119684] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:26,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813497492] [2025-02-08 01:29:26,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:29:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:26,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:29:26,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 01:29:31,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-02-08 01:29:31,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 01:29:31,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:29:31,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:31,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:29:31,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:29:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-08 01:29:32,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:29:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813497492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:29:32,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:29:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-02-08 01:29:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672038677] [2025-02-08 01:29:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:29:32,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:29:32,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:29:32,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:29:32,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2025-02-08 01:29:32,950 INFO L87 Difference]: Start difference. First operand 171 states and 233 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2025-02-08 01:29:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:29:34,655 INFO L93 Difference]: Finished difference Result 299 states and 412 transitions. [2025-02-08 01:29:34,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:29:34,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 97 [2025-02-08 01:29:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:29:34,658 INFO L225 Difference]: With dead ends: 299 [2025-02-08 01:29:34,658 INFO L226 Difference]: Without dead ends: 171 [2025-02-08 01:29:34,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-08 01:29:34,660 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 67 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-02-08 01:29:34,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1055 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-02-08 01:29:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-02-08 01:29:34,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2025-02-08 01:29:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 101 states have internal predecessors, (115), 55 states have call successors, (55), 16 states have call predecessors, (55), 17 states have return successors, (60), 53 states have call predecessors, (60), 53 states have call successors, (60) [2025-02-08 01:29:34,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2025-02-08 01:29:34,680 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 97 [2025-02-08 01:29:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:29:34,681 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2025-02-08 01:29:34,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2025-02-08 01:29:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2025-02-08 01:29:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-08 01:29:34,684 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:29:34,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:29:34,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 01:29:34,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:34,886 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:29:34,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:29:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash -934385684, now seen corresponding path program 2 times [2025-02-08 01:29:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:29:34,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757835629] [2025-02-08 01:29:34,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:29:34,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:29:38,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes. [2025-02-08 01:29:39,509 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-02-08 01:29:39,509 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 01:29:39,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:29:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-02-08 01:29:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:29:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757835629] [2025-02-08 01:29:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757835629] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:29:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641709385] [2025-02-08 01:29:42,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:29:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:29:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:29:42,853 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 01:29:42,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-08 01:29:47,540 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes.