./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 32bbf5b6b15e8e45a78ed01aff570512bbe14911dc5894acdb61cde4404467f0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 03:18:44,196 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 03:18:44,261 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 03:18:44,264 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 03:18:44,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 03:18:44,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 03:18:44,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 03:18:44,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 03:18:44,289 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 03:18:44,289 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 03:18:44,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 03:18:44,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 03:18:44,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 03:18:44,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 03:18:44,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 03:18:44,291 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 03:18:44,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 03:18:44,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 03:18:44,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 03:18:44,292 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32bbf5b6b15e8e45a78ed01aff570512bbe14911dc5894acdb61cde4404467f0 [2025-02-06 03:18:44,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 03:18:44,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 03:18:44,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 03:18:44,540 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 03:18:44,540 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 03:18:44,541 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i [2025-02-06 03:18:45,723 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf39e1fac/dd7a5564c3c54cdb94cddc96bccbf750/FLAGd33b49be2 [2025-02-06 03:18:45,955 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 03:18:45,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i [2025-02-06 03:18:45,974 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf39e1fac/dd7a5564c3c54cdb94cddc96bccbf750/FLAGd33b49be2 [2025-02-06 03:18:46,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf39e1fac/dd7a5564c3c54cdb94cddc96bccbf750 [2025-02-06 03:18:46,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 03:18:46,303 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 03:18:46,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 03:18:46,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 03:18:46,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 03:18:46,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1781c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46, skipping insertion in model container [2025-02-06 03:18:46,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 03:18:46,483 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i[916,929] [2025-02-06 03:18:46,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 03:18:46,540 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 03:18:46,547 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/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-64.i[916,929] [2025-02-06 03:18:46,568 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 03:18:46,583 INFO L204 MainTranslator]: Completed translation [2025-02-06 03:18:46,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46 WrapperNode [2025-02-06 03:18:46,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 03:18:46,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 03:18:46,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 03:18:46,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 03:18:46,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,621 INFO L138 Inliner]: procedures = 29, calls = 169, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 524 [2025-02-06 03:18:46,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 03:18:46,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 03:18:46,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 03:18:46,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 03:18:46,635 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,639 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,652 INFO L175 MemorySlicer]: Split 131 memory accesses to 8 slices as follows [2, 21, 25, 24, 3, 22, 27, 7]. 21 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 3, 2, 3, 1, 2, 3, 1]. The 18 writes are split as follows [0, 3, 3, 3, 1, 4, 3, 1]. [2025-02-06 03:18:46,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,667 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,671 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 03:18:46,675 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 03:18:46,675 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 03:18:46,675 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 03:18:46,676 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (1/1) ... [2025-02-06 03:18:46,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 03:18:46,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:46,702 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) [2025-02-06 03:18:46,711 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 [2025-02-06 03:18:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 03:18:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 03:18:46,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-02-06 03:18:46,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 03:18:46,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 03:18:46,734 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 03:18:46,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-06 03:18:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-06 03:18:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-02-06 03:18:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-02-06 03:18:46,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 03:18:46,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 03:18:46,836 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 03:18:46,838 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 03:18:47,170 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L114: havoc property_#t~mem92#1;havoc property_#t~ite106#1;havoc property_#t~mem96#1;havoc property_#t~mem93#1;havoc property_#t~ite95#1;havoc property_#t~mem94#1;havoc property_#t~ite105#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite102#1;havoc property_#t~mem101#1;havoc property_#t~mem100#1;havoc property_#t~mem104#1;havoc property_#t~mem103#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~ite113#1;havoc property_#t~mem112#1;havoc property_#t~mem109#1;havoc property_#t~mem110#1;havoc property_#t~short111#1;havoc property_#t~short114#1;havoc property_#t~mem115#1;havoc property_#t~ite125#1;havoc property_#t~mem119#1;havoc property_#t~mem118#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~short120#1;havoc property_#t~ite124#1;havoc property_#t~mem123#1;havoc property_#t~mem121#1;havoc property_#t~mem122#1;havoc property_#t~short126#1;havoc property_#t~mem129#1;havoc property_#t~mem127#1;havoc property_#t~mem128#1;havoc property_#t~bitwise130#1;havoc property_#t~mem131#1;havoc property_#t~ite140#1;havoc property_#t~mem132#1;havoc property_#t~ite137#1;havoc property_#t~mem134#1;havoc property_#t~mem133#1;havoc property_#t~mem136#1;havoc property_#t~mem135#1;havoc property_#t~mem139#1;havoc property_#t~mem138#1;havoc property_#t~short141#1; [2025-02-06 03:18:47,209 INFO L? ?]: Removed 132 outVars from TransFormulas that were not future-live. [2025-02-06 03:18:47,210 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 03:18:47,222 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 03:18:47,222 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 03:18:47,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 03:18:47 BoogieIcfgContainer [2025-02-06 03:18:47,222 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 03:18:47,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 03:18:47,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 03:18:47,227 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 03:18:47,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 03:18:46" (1/3) ... [2025-02-06 03:18:47,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12810ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 03:18:47, skipping insertion in model container [2025-02-06 03:18:47,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 03:18:46" (2/3) ... [2025-02-06 03:18:47,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12810ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 03:18:47, skipping insertion in model container [2025-02-06 03:18:47,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 03:18:47" (3/3) ... [2025-02-06 03:18:47,228 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-64.i [2025-02-06 03:18:47,237 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 03:18:47,238 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-a_file-64.i that has 2 procedures, 128 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 03:18:47,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 03:18:47,282 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;@380611d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 03:18:47,283 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 03:18:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 03:18:47,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-06 03:18:47,294 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:47,294 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:47,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash -225622903, now seen corresponding path program 1 times [2025-02-06 03:18:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049192290] [2025-02-06 03:18:47,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:47,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 03:18:47,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 03:18:47,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:47,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-02-06 03:18:47,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:18:47,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049192290] [2025-02-06 03:18:47,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049192290] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 03:18:47,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812377717] [2025-02-06 03:18:47,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:47,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:47,604 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) [2025-02-06 03:18:47,606 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 [2025-02-06 03:18:47,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 03:18:47,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 03:18:47,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:47,815 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:47,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 03:18:47,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 03:18:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-02-06 03:18:47,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 03:18:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812377717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 03:18:47,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 03:18:47,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 03:18:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007081414] [2025-02-06 03:18:47,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 03:18:47,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 03:18:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:18:47,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 03:18:47,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 03:18:47,873 INFO L87 Difference]: Start difference. First operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-02-06 03:18:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:18:47,915 INFO L93 Difference]: Finished difference Result 250 states and 395 transitions. [2025-02-06 03:18:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 03:18:47,916 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2025-02-06 03:18:47,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:18:47,924 INFO L225 Difference]: With dead ends: 250 [2025-02-06 03:18:47,924 INFO L226 Difference]: Without dead ends: 125 [2025-02-06 03:18:47,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 03:18:47,928 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 03:18:47,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 03:18:47,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-02-06 03:18:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-02-06 03:18:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 03:18:47,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2025-02-06 03:18:47,953 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 159 [2025-02-06 03:18:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:18:47,955 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2025-02-06 03:18:47,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-02-06 03:18:47,955 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2025-02-06 03:18:47,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-02-06 03:18:47,957 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:47,957 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:47,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 03:18:48,158 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 [2025-02-06 03:18:48,158 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:48,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:48,160 INFO L85 PathProgramCache]: Analyzing trace with hash -687992775, now seen corresponding path program 1 times [2025-02-06 03:18:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569212465] [2025-02-06 03:18:48,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:48,187 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 03:18:48,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 03:18:48,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:48,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-02-06 03:18:48,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:18:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569212465] [2025-02-06 03:18:48,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569212465] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 03:18:48,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077615338] [2025-02-06 03:18:48,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:48,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:48,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:48,606 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) [2025-02-06 03:18:48,609 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 [2025-02-06 03:18:48,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-02-06 03:18:48,825 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-02-06 03:18:48,825 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:48,825 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:48,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-06 03:18:48,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 03:18:48,881 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-06 03:18:48,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 03:18:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077615338] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 03:18:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 03:18:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-02-06 03:18:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239102611] [2025-02-06 03:18:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 03:18:48,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 03:18:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:18:48,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 03:18:48,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 03:18:48,887 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:18:48,931 INFO L93 Difference]: Finished difference Result 249 states and 370 transitions. [2025-02-06 03:18:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 03:18:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2025-02-06 03:18:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:18:48,934 INFO L225 Difference]: With dead ends: 249 [2025-02-06 03:18:48,934 INFO L226 Difference]: Without dead ends: 127 [2025-02-06 03:18:48,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 03:18:48,935 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 03:18:48,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 03:18:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-02-06 03:18:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-02-06 03:18:48,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.4) internal successors, (147), 105 states have internal predecessors, (147), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 03:18:48,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 187 transitions. [2025-02-06 03:18:48,948 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 187 transitions. Word has length 159 [2025-02-06 03:18:48,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:18:48,949 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 187 transitions. [2025-02-06 03:18:48,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:48,950 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 187 transitions. [2025-02-06 03:18:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-02-06 03:18:48,951 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:48,951 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:48,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 03:18:49,152 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 [2025-02-06 03:18:49,152 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:49,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 905360595, now seen corresponding path program 1 times [2025-02-06 03:18:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965868795] [2025-02-06 03:18:49,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:49,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-06 03:18:49,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-06 03:18:49,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:49,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-02-06 03:18:49,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:18:49,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965868795] [2025-02-06 03:18:49,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965868795] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 03:18:49,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235650163] [2025-02-06 03:18:49,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:49,442 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) [2025-02-06 03:18:49,450 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 [2025-02-06 03:18:49,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-02-06 03:18:49,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-02-06 03:18:49,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:49,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:49,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 03:18:49,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 03:18:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-06 03:18:49,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 03:18:49,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235650163] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 03:18:49,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 03:18:49,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-02-06 03:18:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157925092] [2025-02-06 03:18:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 03:18:49,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 03:18:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:18:49,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 03:18:49,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 03:18:49,659 INFO L87 Difference]: Start difference. First operand 127 states and 187 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:18:49,692 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2025-02-06 03:18:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 03:18:49,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2025-02-06 03:18:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:18:49,693 INFO L225 Difference]: With dead ends: 254 [2025-02-06 03:18:49,694 INFO L226 Difference]: Without dead ends: 130 [2025-02-06 03:18:49,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-06 03:18:49,694 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 03:18:49,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 703 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 03:18:49,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-02-06 03:18:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-02-06 03:18:49,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 108 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 03:18:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 190 transitions. [2025-02-06 03:18:49,700 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 190 transitions. Word has length 161 [2025-02-06 03:18:49,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:18:49,701 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 190 transitions. [2025-02-06 03:18:49,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:49,701 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 190 transitions. [2025-02-06 03:18:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-06 03:18:49,702 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:49,702 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:49,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 03:18:49,903 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 [2025-02-06 03:18:49,903 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:49,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:49,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2106547152, now seen corresponding path program 1 times [2025-02-06 03:18:49,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689012191] [2025-02-06 03:18:49,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:49,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-06 03:18:50,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-06 03:18:50,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:50,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-02-06 03:18:50,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:18:50,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689012191] [2025-02-06 03:18:50,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689012191] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 03:18:50,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 03:18:50,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 03:18:50,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816029518] [2025-02-06 03:18:50,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 03:18:50,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 03:18:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:18:50,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 03:18:50,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 03:18:50,605 INFO L87 Difference]: Start difference. First operand 130 states and 190 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:18:51,058 INFO L93 Difference]: Finished difference Result 485 states and 707 transitions. [2025-02-06 03:18:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 03:18:51,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2025-02-06 03:18:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:18:51,061 INFO L225 Difference]: With dead ends: 485 [2025-02-06 03:18:51,061 INFO L226 Difference]: Without dead ends: 358 [2025-02-06 03:18:51,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-02-06 03:18:51,062 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 385 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 03:18:51,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 837 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 03:18:51,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-02-06 03:18:51,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 147. [2025-02-06 03:18:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 125 states have (on average 1.408) internal successors, (176), 125 states have internal predecessors, (176), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-06 03:18:51,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2025-02-06 03:18:51,073 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 162 [2025-02-06 03:18:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:18:51,073 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2025-02-06 03:18:51,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-02-06 03:18:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2025-02-06 03:18:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-06 03:18:51,075 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:51,075 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:51,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 03:18:51,075 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:51,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1624290987, now seen corresponding path program 1 times [2025-02-06 03:18:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:51,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47165598] [2025-02-06 03:18:51,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:51,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 03:18:51,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 03:18:51,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:51,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:51,868 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-02-06 03:18:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:18:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47165598] [2025-02-06 03:18:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47165598] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 03:18:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804454361] [2025-02-06 03:18:51,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:51,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:51,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:51,871 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) [2025-02-06 03:18:51,876 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 [2025-02-06 03:18:51,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 03:18:52,066 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 03:18:52,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:52,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:52,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 03:18:52,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 03:18:52,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2025-02-06 03:18:52,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 03:18:52,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2025-02-06 03:18:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 19 proven. 57 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2025-02-06 03:18:52,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 03:18:54,132 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-02-06 03:18:54,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804454361] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 03:18:54,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 03:18:54,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2025-02-06 03:18:54,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361066410] [2025-02-06 03:18:54,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 03:18:54,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 03:18:54,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:18:54,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 03:18:54,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2025-02-06 03:18:54,135 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) [2025-02-06 03:18:56,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:18:56,329 INFO L93 Difference]: Finished difference Result 642 states and 931 transitions. [2025-02-06 03:18:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-06 03:18:56,329 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) Word has length 163 [2025-02-06 03:18:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:18:56,332 INFO L225 Difference]: With dead ends: 642 [2025-02-06 03:18:56,332 INFO L226 Difference]: Without dead ends: 498 [2025-02-06 03:18:56,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=582, Invalid=3450, Unknown=0, NotChecked=0, Total=4032 [2025-02-06 03:18:56,334 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 695 mSDsluCounter, 2550 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 1955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-06 03:18:56,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 2671 Invalid, 1955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1809 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-06 03:18:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-02-06 03:18:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 366. [2025-02-06 03:18:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 299 states have (on average 1.374581939799331) internal successors, (411), 299 states have internal predecessors, (411), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-02-06 03:18:56,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 531 transitions. [2025-02-06 03:18:56,356 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 531 transitions. Word has length 163 [2025-02-06 03:18:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:18:56,357 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 531 transitions. [2025-02-06 03:18:56,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.6) internal successors, (190), 27 states have internal predecessors, (190), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 4 states have call predecessors, (60), 7 states have call successors, (60) [2025-02-06 03:18:56,357 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 531 transitions. [2025-02-06 03:18:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-06 03:18:56,358 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:18:56,358 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:18:56,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 03:18:56,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:56,559 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:18:56,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:18:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1089225906, now seen corresponding path program 1 times [2025-02-06 03:18:56,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:18:56,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757183107] [2025-02-06 03:18:56,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:56,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:18:56,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-06 03:18:56,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-06 03:18:56,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:56,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-02-06 03:18:56,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851370926] [2025-02-06 03:18:56,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:18:56,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:18:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 03:18:56,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 03:18:56,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 03:18:56,818 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-06 03:18:57,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-06 03:18:57,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:18:57,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 03:18:57,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 03:18:57,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 03:18:57,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-02-06 03:18:57,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-02-06 03:18:57,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2025-02-06 03:18:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 69 proven. 421 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2025-02-06 03:18:57,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 03:19:06,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 03:19:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757183107] [2025-02-06 03:19:06,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-02-06 03:19:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851370926] [2025-02-06 03:19:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851370926] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 03:19:06,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-02-06 03:19:06,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2025-02-06 03:19:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312758307] [2025-02-06 03:19:06,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-02-06 03:19:06,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 03:19:06,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 03:19:06,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 03:19:06,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2025-02-06 03:19:06,164 INFO L87 Difference]: Start difference. First operand 366 states and 531 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-02-06 03:19:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 03:19:08,151 INFO L93 Difference]: Finished difference Result 683 states and 980 transitions. [2025-02-06 03:19:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 03:19:08,156 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 164 [2025-02-06 03:19:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 03:19:08,161 INFO L225 Difference]: With dead ends: 683 [2025-02-06 03:19:08,165 INFO L226 Difference]: Without dead ends: 396 [2025-02-06 03:19:08,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=78, Invalid=226, Unknown=2, NotChecked=0, Total=306 [2025-02-06 03:19:08,166 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 177 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-06 03:19:08,167 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 764 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-06 03:19:08,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2025-02-06 03:19:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 382. [2025-02-06 03:19:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 311 states have (on average 1.3536977491961415) internal successors, (421), 311 states have internal predecessors, (421), 60 states have call successors, (60), 10 states have call predecessors, (60), 10 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2025-02-06 03:19:08,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 541 transitions. [2025-02-06 03:19:08,208 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 541 transitions. Word has length 164 [2025-02-06 03:19:08,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 03:19:08,211 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 541 transitions. [2025-02-06 03:19:08,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 8 states have internal predecessors, (76), 4 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-02-06 03:19:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 541 transitions. [2025-02-06 03:19:08,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-02-06 03:19:08,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 03:19:08,216 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 03:19:08,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 03:19:08,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 03:19:08,417 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 03:19:08,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 03:19:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash -987983437, now seen corresponding path program 1 times [2025-02-06 03:19:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 03:19:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814423326] [2025-02-06 03:19:08,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 03:19:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 03:19:08,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-02-06 03:19:08,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-02-06 03:19:08,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 03:19:08,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat