./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.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_back_harness_negated.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 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:24:58,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:24:58,272 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-02-08 01:24:58,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:24:58,278 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:24:58,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:24:58,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:24:58,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:24:58,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:24:58,300 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:24:58,300 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:24:58,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:24:58,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:24:58,301 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:24:58,302 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:24:58,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:24:58,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:24:58,302 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 -> 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 [2025-02-08 01:24:58,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:24:58,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:24:58,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:24:58,542 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:24:58,542 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:24:58,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2025-02-08 01:24:59,648 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d25ade39f/ee7d2f7b78f84c298f5e2d8479a5fe2b/FLAG96df8e5bf [2025-02-08 01:25:00,073 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:25:00,075 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2025-02-08 01:25:00,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d25ade39f/ee7d2f7b78f84c298f5e2d8479a5fe2b/FLAG96df8e5bf [2025-02-08 01:25:00,205 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d25ade39f/ee7d2f7b78f84c298f5e2d8479a5fe2b [2025-02-08 01:25:00,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:25:00,208 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:25:00,209 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:25:00,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:25:00,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:25:00,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:25:00" (1/1) ... [2025-02-08 01:25:00,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3f5755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:00, skipping insertion in model container [2025-02-08 01:25:00,215 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:25:00" (1/1) ... [2025-02-08 01:25:00,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:25:00,516 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_back_harness_negated.i[4493,4506] [2025-02-08 01:25:00,524 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_back_harness_negated.i[4553,4566] [2025-02-08 01:25:01,091 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,093 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,093 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,094 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,094 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,102 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,102 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,103 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,104 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,105 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,105 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,107 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,107 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,402 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,407 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:25:01,467 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:25:01,477 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_back_harness_negated.i[4493,4506] [2025-02-08 01:25:01,479 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_back_harness_negated.i[4553,4566] [2025-02-08 01:25:01,532 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,533 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,534 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,534 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,535 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,541 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,544 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,545 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,547 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,547 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,548 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,548 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,548 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,609 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,614 WARN L1731 CHandler]: Possible shadowing of function index [2025-02-08 01:25:01,619 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7737-7748] [2025-02-08 01:25:01,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:25:01,771 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:25:01,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01 WrapperNode [2025-02-08 01:25:01,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:25:01,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:25:01,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:25:01,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:25:01,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,816 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,889 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656 [2025-02-08 01:25:01,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:25:01,890 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:25:01,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:25:01,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:25:01,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,907 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,962 INFO L175 MemorySlicer]: Split 313 memory accesses to 6 slices as follows [238, 2, 9, 6, 3, 55]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 5, 0, 1, 10]. The 239 writes are split as follows [232, 0, 1, 2, 1, 3]. [2025-02-08 01:25:01,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:01,995 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:02,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:02,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:02,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:02,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:25:02,029 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:25:02,029 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:25:02,029 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:25:02,029 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (1/1) ... [2025-02-08 01:25:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:25:02,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:02,059 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 01:25:02,065 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 01:25:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 01:25:02,082 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2025-02-08 01:25:02,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2025-02-08 01:25:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2025-02-08 01:25:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2025-02-08 01:25:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2025-02-08 01:25:02,083 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2025-02-08 01:25:02,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 01:25:02,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2025-02-08 01:25:02,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2025-02-08 01:25:02,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 01:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2025-02-08 01:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2025-02-08 01:25:02,086 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2025-02-08 01:25:02,086 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2025-02-08 01:25:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2025-02-08 01:25:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2025-02-08 01:25:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2025-02-08 01:25:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2025-02-08 01:25:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2025-02-08 01:25:02,087 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-08 01:25:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2025-02-08 01:25:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2025-02-08 01:25:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2025-02-08 01:25:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-08 01:25:02,088 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:25:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-08 01:25:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-08 01:25:02,335 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:25:02,338 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:25:02,381 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2782: havoc #t~malloc77.base, #t~malloc77.offset; [2025-02-08 01:25:02,398 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L263: havoc #t~nondet6; [2025-02-08 01:25:02,426 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2588: havoc #t~ret57#1; [2025-02-08 01:25:02,458 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2796: havoc #t~ret81;havoc #t~ite83.base, #t~ite83.offset;havoc #t~ret82.base, #t~ret82.offset; [2025-02-08 01:25:02,540 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 01:25:02,542 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L261: havoc #t~nondet4; [2025-02-08 01:25:02,566 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L7358: havoc #t~ret683.base, #t~ret683.offset; [2025-02-08 01:25:07,850 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3417: havoc aws_array_list_back_~last_item_offset~0#1; [2025-02-08 01:25:07,851 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3426: havoc aws_array_list_back_#t~ret217#1; [2025-02-08 01:25:07,907 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2025-02-08 01:25:07,907 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:25:07,918 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:25:07,919 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:25:07,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:25:07 BoogieIcfgContainer [2025-02-08 01:25:07,920 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:25:07,922 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:25:07,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:25:07,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:25:07,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:25:00" (1/3) ... [2025-02-08 01:25:07,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e618ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:25:07, skipping insertion in model container [2025-02-08 01:25:07,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:25:01" (2/3) ... [2025-02-08 01:25:07,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e618ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:25:07, skipping insertion in model container [2025-02-08 01:25:07,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:25:07" (3/3) ... [2025-02-08 01:25:07,927 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness_negated.i [2025-02-08 01:25:07,937 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:25:07,938 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_back_harness_negated.i that has 18 procedures, 181 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-08 01:25:07,981 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:25:07,990 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;@4cc49ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:25:07,991 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-08 01:25:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 181 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 108 states have internal predecessors, (127), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2025-02-08 01:25:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:25:08,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:08,002 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:08,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:08,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -717503643, now seen corresponding path program 1 times [2025-02-08 01:25:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212814540] [2025-02-08 01:25:08,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:12,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:25:12,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:25:12,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:12,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-08 01:25:13,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:25:13,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212814540] [2025-02-08 01:25:13,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212814540] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:25:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072045843] [2025-02-08 01:25:13,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:13,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:25:13,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:13,122 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 01:25:13,124 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 01:25:17,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:25:17,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:25:17,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:17,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:17,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-08 01:25:17,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:25:17,632 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2025-02-08 01:25:17,633 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:25:17,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072045843] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:25:17,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:25:17,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-08 01:25:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150861738] [2025-02-08 01:25:17,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:25:17,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-08 01:25:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:25:17,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-08 01:25:17,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-08 01:25:17,656 INFO L87 Difference]: Start difference. First operand has 181 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 108 states have internal predecessors, (127), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:25:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:25:17,695 INFO L93 Difference]: Finished difference Result 356 states and 503 transitions. [2025-02-08 01:25:17,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 01:25:17,697 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 128 [2025-02-08 01:25:17,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:25:17,702 INFO L225 Difference]: With dead ends: 356 [2025-02-08 01:25:17,703 INFO L226 Difference]: Without dead ends: 170 [2025-02-08 01:25:17,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 129 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 01:25:17,708 INFO L435 NwaCegarLoop]: 235 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, 235 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 01:25:17,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 01:25:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2025-02-08 01:25:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2025-02-08 01:25:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 99 states have (on average 1.1616161616161615) internal successors, (115), 100 states have internal predecessors, (115), 54 states have call successors, (54), 17 states have call predecessors, (54), 16 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2025-02-08 01:25:17,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 221 transitions. [2025-02-08 01:25:17,743 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 221 transitions. Word has length 128 [2025-02-08 01:25:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:25:17,744 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 221 transitions. [2025-02-08 01:25:17,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2025-02-08 01:25:17,744 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 221 transitions. [2025-02-08 01:25:17,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-08 01:25:17,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:17,748 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:17,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-08 01:25:17,949 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 01:25:17,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:17,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -687988633, now seen corresponding path program 1 times [2025-02-08 01:25:17,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:17,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715014738] [2025-02-08 01:25:17,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:17,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:21,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:25:21,819 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:25:21,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:21,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2025-02-08 01:25:22,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:25:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715014738] [2025-02-08 01:25:22,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715014738] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:25:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730289983] [2025-02-08 01:25:22,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:22,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:25:22,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:22,966 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 01:25:22,968 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 01:25:27,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 128 statements into 1 equivalence classes. [2025-02-08 01:25:27,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 128 of 128 statements. [2025-02-08 01:25:27,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:27,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:27,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 4267 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-08 01:25:27,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:25:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-02-08 01:25:28,082 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:25:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730289983] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:25:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:25:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-08 01:25:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672375369] [2025-02-08 01:25:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:25:28,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:25:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:25:28,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:25:28,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 01:25:28,086 INFO L87 Difference]: Start difference. First operand 170 states and 221 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-02-08 01:25:28,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:25:28,878 INFO L93 Difference]: Finished difference Result 314 states and 414 transitions. [2025-02-08 01:25:28,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:25:28,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 128 [2025-02-08 01:25:28,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:25:28,881 INFO L225 Difference]: With dead ends: 314 [2025-02-08 01:25:28,881 INFO L226 Difference]: Without dead ends: 172 [2025-02-08 01:25:28,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 126 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 01:25:28,882 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 47 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 01:25:28,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 721 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 01:25:28,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-02-08 01:25:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-02-08 01:25:28,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 100 states have (on average 1.16) internal successors, (116), 102 states have internal predecessors, (116), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2025-02-08 01:25:28,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2025-02-08 01:25:28,897 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 128 [2025-02-08 01:25:28,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:25:28,898 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2025-02-08 01:25:28,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2025-02-08 01:25:28,898 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2025-02-08 01:25:28,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-08 01:25:28,900 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:28,900 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:28,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 01:25:29,101 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 01:25:29,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:29,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:29,102 INFO L85 PathProgramCache]: Analyzing trace with hash -910476857, now seen corresponding path program 1 times [2025-02-08 01:25:29,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:29,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628327180] [2025-02-08 01:25:29,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:29,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:32,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-08 01:25:33,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-08 01:25:33,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:33,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2025-02-08 01:25:35,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:25:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628327180] [2025-02-08 01:25:35,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628327180] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:25:35,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552906528] [2025-02-08 01:25:35,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:25:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:25:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:35,546 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 01:25:35,548 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 01:25:39,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 156 statements into 1 equivalence classes. [2025-02-08 01:25:40,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 156 of 156 statements. [2025-02-08 01:25:40,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:25:40,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:40,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 4521 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 01:25:40,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 01:25:41,304 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-02-08 01:25:41,304 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 01:25:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552906528] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:25:41,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 01:25:41,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2025-02-08 01:25:41,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855243950] [2025-02-08 01:25:41,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:25:41,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:25:41,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:25:41,306 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:25:41,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-02-08 01:25:41,306 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2025-02-08 01:25:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:25:42,353 INFO L93 Difference]: Finished difference Result 276 states and 364 transitions. [2025-02-08 01:25:42,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:25:42,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 156 [2025-02-08 01:25:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:25:42,355 INFO L225 Difference]: With dead ends: 276 [2025-02-08 01:25:42,355 INFO L226 Difference]: Without dead ends: 172 [2025-02-08 01:25:42,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2025-02-08 01:25:42,356 INFO L435 NwaCegarLoop]: 202 mSDtfsCounter, 50 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 01:25:42,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 903 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 01:25:42,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-02-08 01:25:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-02-08 01:25:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 100 states have (on average 1.16) internal successors, (116), 102 states have internal predecessors, (116), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 52 states have call predecessors, (54), 52 states have call successors, (54) [2025-02-08 01:25:42,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2025-02-08 01:25:42,368 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 156 [2025-02-08 01:25:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:25:42,369 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2025-02-08 01:25:42,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2025-02-08 01:25:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2025-02-08 01:25:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-08 01:25:42,370 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:42,370 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 01:25:42,386 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 01:25:42,571 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 01:25:42,571 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:42,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1863435610, now seen corresponding path program 2 times [2025-02-08 01:25:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872906052] [2025-02-08 01:25:42,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 01:25:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:46,472 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 170 statements into 2 equivalence classes. [2025-02-08 01:25:46,623 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 170 statements. [2025-02-08 01:25:46,624 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 01:25:46,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:48,359 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2025-02-08 01:25:48,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:25:48,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872906052] [2025-02-08 01:25:48,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872906052] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:25:48,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:25:48,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:25:48,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012963273] [2025-02-08 01:25:48,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:25:48,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:25:48,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:25:48,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:25:48,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:25:48,360 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-08 01:25:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 01:25:48,738 INFO L93 Difference]: Finished difference Result 180 states and 232 transitions. [2025-02-08 01:25:48,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:25:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2025-02-08 01:25:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 01:25:48,742 INFO L225 Difference]: With dead ends: 180 [2025-02-08 01:25:48,742 INFO L226 Difference]: Without dead ends: 178 [2025-02-08 01:25:48,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:25:48,744 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 3 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 01:25:48,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1076 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 01:25:48,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2025-02-08 01:25:48,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2025-02-08 01:25:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 105 states have internal predecessors, (119), 55 states have call successors, (55), 18 states have call predecessors, (55), 18 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2025-02-08 01:25:48,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 229 transitions. [2025-02-08 01:25:48,758 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 229 transitions. Word has length 170 [2025-02-08 01:25:48,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 01:25:48,758 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 229 transitions. [2025-02-08 01:25:48,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2025-02-08 01:25:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 229 transitions. [2025-02-08 01:25:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-02-08 01:25:48,760 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 01:25:48,760 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:48,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:25:48,760 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-08 01:25:48,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:25:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1313097413, now seen corresponding path program 3 times [2025-02-08 01:25:48,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:25:48,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224495744] [2025-02-08 01:25:48,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:25:48,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:25:52,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 184 statements into 10 equivalence classes. [2025-02-08 01:25:53,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 45 of 184 statements. [2025-02-08 01:25:53,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 01:25:53,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:25:55,301 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2025-02-08 01:25:55,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:25:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224495744] [2025-02-08 01:25:55,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224495744] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 01:25:55,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217961795] [2025-02-08 01:25:55,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 01:25:55,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 01:25:55,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:25:55,304 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 01:25:55,305 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 01:25:59,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 184 statements into 10 equivalence classes.