./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 01:33:02,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 01:33:02,279 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 01:33:02,284 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 01:33:02,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 01:33:02,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 01:33:02,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 01:33:02,305 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 01:33:02,305 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 01:33:02,305 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 01:33:02,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 01:33:02,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 01:33:02,306 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 01:33:02,306 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 01:33:02,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 01:33:02,307 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 01:33:02,308 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:33:02,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 01:33:02,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 01:33:02,309 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f77e8c9f93ca54d94eb905f2ce3291ad784a62b1b2b1f919a3731c7174a0c943 [2025-03-04 01:33:02,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 01:33:02,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 01:33:02,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 01:33:02,498 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 01:33:02,498 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 01:33:02,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2025-03-04 01:33:03,637 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30d77c10/6b9e609eeb494691960590f3b0662ef9/FLAG4ca864015 [2025-03-04 01:33:03,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 01:33:03,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i [2025-03-04 01:33:03,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30d77c10/6b9e609eeb494691960590f3b0662ef9/FLAG4ca864015 [2025-03-04 01:33:04,220 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e30d77c10/6b9e609eeb494691960590f3b0662ef9 [2025-03-04 01:33:04,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 01:33:04,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 01:33:04,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 01:33:04,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 01:33:04,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 01:33:04,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c621b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04, skipping insertion in model container [2025-03-04 01:33:04,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 01:33:04,330 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2025-03-04 01:33:04,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:33:04,406 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 01:33:04,416 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-80.i[916,929] [2025-03-04 01:33:04,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:33:04,465 INFO L204 MainTranslator]: Completed translation [2025-03-04 01:33:04,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04 WrapperNode [2025-03-04 01:33:04,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 01:33:04,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 01:33:04,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 01:33:04,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 01:33:04,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,484 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,525 INFO L138 Inliner]: procedures = 29, calls = 244, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 808 [2025-03-04 01:33:04,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 01:33:04,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 01:33:04,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 01:33:04,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 01:33:04,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,578 INFO L175 MemorySlicer]: Split 199 memory accesses to 18 slices as follows [2, 3, 11, 8, 12, 13, 6, 14, 5, 22, 22, 14, 16, 8, 8, 3, 23, 9]. 12 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 19 writes are split as follows [0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]. [2025-03-04 01:33:04,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,601 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 01:33:04,616 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 01:33:04,616 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 01:33:04,616 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 01:33:04,617 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (1/1) ... [2025-03-04 01:33:04,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:33:04,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:04,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 01:33:04,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 01:33:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 01:33:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 01:33:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 01:33:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-04 01:33:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#16 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#17 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-04 01:33:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2025-03-04 01:33:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2025-03-04 01:33:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2025-03-04 01:33:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2025-03-04 01:33:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#16 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#17 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#16 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#17 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 01:33:04,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#16 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#17 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#16 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#17 [2025-03-04 01:33:04,673 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 01:33:04,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2025-03-04 01:33:04,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2025-03-04 01:33:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 01:33:04,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 01:33:04,874 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 01:33:04,876 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 01:33:05,306 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L111: havoc property_#t~mem140#1;havoc property_#t~mem141#1;havoc property_#t~mem142#1;havoc property_#t~ite146#1;havoc property_#t~mem143#1;havoc property_#t~mem144#1;havoc property_#t~mem145#1;havoc property_#t~mem147#1;havoc property_#t~mem148#1;havoc property_#t~mem149#1;havoc property_#t~mem150#1;havoc property_#t~ite155#1;havoc property_#t~mem151#1;havoc property_#t~mem152#1;havoc property_#t~mem153#1;havoc property_#t~mem154#1;havoc property_#t~ite164#1;havoc property_#t~mem163#1;havoc property_#t~mem156#1;havoc property_#t~mem157#1;havoc property_#t~mem158#1;havoc property_#t~ite162#1;havoc property_#t~mem159#1;havoc property_#t~mem160#1;havoc property_#t~mem161#1;havoc property_#t~mem167#1;havoc property_#t~mem165#1;havoc property_#t~mem166#1;havoc property_#t~short168#1;havoc property_#t~ite176#1;havoc property_#t~mem173#1;havoc property_#t~mem169#1;havoc property_#t~ite172#1;havoc property_#t~mem170#1;havoc property_#t~mem171#1;havoc property_#t~mem175#1;havoc property_#t~mem174#1;havoc property_#t~short177#1;havoc property_#t~mem180#1;havoc property_#t~mem178#1;havoc property_#t~mem179#1;havoc property_#t~ite218#1;havoc property_#t~mem214#1;havoc property_#t~mem181#1;havoc property_#t~mem182#1;havoc property_#t~ite185#1;havoc property_#t~mem183#1;havoc property_#t~mem184#1;havoc property_#t~mem186#1;havoc property_#t~ite193#1;havoc property_#t~mem187#1;havoc property_#t~mem188#1;havoc property_#t~ite191#1;havoc property_#t~mem189#1;havoc property_#t~mem190#1;havoc property_#t~mem192#1;havoc property_#t~mem194#1;havoc property_#t~ite196#1;havoc property_#t~mem195#1;havoc property_#t~ite213#1;havoc property_#t~mem197#1;havoc property_#t~mem198#1;havoc property_#t~ite201#1;havoc property_#t~mem199#1;havoc property_#t~mem200#1;havoc property_#t~mem202#1;havoc property_#t~ite209#1;havoc property_#t~mem203#1;havoc property_#t~mem204#1;havoc property_#t~ite207#1;havoc property_#t~mem205#1;havoc property_#t~mem206#1;havoc property_#t~mem208#1;havoc property_#t~mem210#1;havoc property_#t~ite212#1;havoc property_#t~mem211#1;havoc property_#t~mem217#1;havoc property_#t~mem215#1;havoc property_#t~mem216#1;havoc property_#t~short219#1;havoc property_#t~mem221#1;havoc property_#t~mem220#1;havoc property_#t~short222#1;havoc property_#t~mem224#1;havoc property_#t~mem223#1;havoc property_#t~short225#1;havoc property_#t~mem227#1;havoc property_#t~mem226#1;havoc property_#t~short228#1; [2025-03-04 01:33:05,363 INFO L? ?]: Removed 236 outVars from TransFormulas that were not future-live. [2025-03-04 01:33:05,363 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 01:33:05,375 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 01:33:05,375 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 01:33:05,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:33:05 BoogieIcfgContainer [2025-03-04 01:33:05,375 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 01:33:05,378 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 01:33:05,378 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 01:33:05,382 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 01:33:05,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 01:33:04" (1/3) ... [2025-03-04 01:33:05,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b180701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:33:05, skipping insertion in model container [2025-03-04 01:33:05,382 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:33:04" (2/3) ... [2025-03-04 01:33:05,382 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b180701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:33:05, skipping insertion in model container [2025-03-04 01:33:05,383 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:33:05" (3/3) ... [2025-03-04 01:33:05,384 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-80.i [2025-03-04 01:33:05,394 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 01:33:05,399 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-80.i that has 2 procedures, 153 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 01:33:05,440 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 01:33:05,447 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;@3b481f4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 01:33:05,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 01:33:05,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:33:05,459 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:05,460 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:05,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:05,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1906887608, now seen corresponding path program 1 times [2025-03-04 01:33:05,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:05,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698969760] [2025-03-04 01:33:05,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:05,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:05,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:05,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:05,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-04 01:33:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:05,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698969760] [2025-03-04 01:33:05,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698969760] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:33:05,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752549342] [2025-03-04 01:33:05,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:05,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:05,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:05,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:33:05,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 01:33:05,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:06,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:06,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:06,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:06,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 01:33:06,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:33:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2025-03-04 01:33:06,107 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:33:06,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752549342] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:06,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:33:06,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 01:33:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801101139] [2025-03-04 01:33:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:06,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 01:33:06,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:06,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 01:33:06,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:33:06,126 INFO L87 Difference]: Start difference. First operand has 153 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 134 states have internal predecessors, (193), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-04 01:33:06,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:06,153 INFO L93 Difference]: Finished difference Result 300 states and 466 transitions. [2025-03-04 01:33:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 01:33:06,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2025-03-04 01:33:06,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:06,159 INFO L225 Difference]: With dead ends: 300 [2025-03-04 01:33:06,159 INFO L226 Difference]: Without dead ends: 150 [2025-03-04 01:33:06,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:33:06,163 INFO L435 NwaCegarLoop]: 222 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, 222 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:06,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-03-04 01:33:06,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-03-04 01:33:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 131 states have internal predecessors, (188), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 222 transitions. [2025-03-04 01:33:06,211 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 222 transitions. Word has length 153 [2025-03-04 01:33:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:06,211 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 222 transitions. [2025-03-04 01:33:06,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2025-03-04 01:33:06,213 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 222 transitions. [2025-03-04 01:33:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:33:06,217 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:06,217 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:06,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 01:33:06,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-04 01:33:06,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:06,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash -132796819, now seen corresponding path program 1 times [2025-03-04 01:33:06,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96219521] [2025-03-04 01:33:06,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:06,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:06,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:06,507 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:06,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:33:06,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:06,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96219521] [2025-03-04 01:33:06,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96219521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:33:06,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424319207] [2025-03-04 01:33:06,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:06,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:06,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:06,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:33:06,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 01:33:07,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:07,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:07,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:07,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:07,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:33:07,118 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:33:07,145 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:33:07,145 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:33:07,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424319207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:07,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:33:07,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:33:07,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102405022] [2025-03-04 01:33:07,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:07,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:33:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:07,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:33:07,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:07,148 INFO L87 Difference]: Start difference. First operand 150 states and 222 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:07,179 INFO L93 Difference]: Finished difference Result 300 states and 445 transitions. [2025-03-04 01:33:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:33:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:33:07,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:07,181 INFO L225 Difference]: With dead ends: 300 [2025-03-04 01:33:07,181 INFO L226 Difference]: Without dead ends: 153 [2025-03-04 01:33:07,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:07,183 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:07,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 646 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-03-04 01:33:07,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2025-03-04 01:33:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 133 states have (on average 1.4285714285714286) internal successors, (190), 133 states have internal predecessors, (190), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2025-03-04 01:33:07,200 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 153 [2025-03-04 01:33:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:07,201 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2025-03-04 01:33:07,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2025-03-04 01:33:07,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:33:07,204 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:07,204 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:07,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 01:33:07,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-04 01:33:07,405 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:07,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1940251282, now seen corresponding path program 1 times [2025-03-04 01:33:07,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:07,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021415827] [2025-03-04 01:33:07,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:07,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:07,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:07,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:07,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:07,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:07,656 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:33:07,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021415827] [2025-03-04 01:33:07,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021415827] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:33:07,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626258291] [2025-03-04 01:33:07,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:07,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:07,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:07,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:33:07,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 01:33:07,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:07,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:07,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:07,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:07,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:33:07,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:33:07,937 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:33:07,937 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:33:07,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626258291] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:07,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:33:07,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:33:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276277209] [2025-03-04 01:33:07,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:07,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:33:07,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:07,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:33:07,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:07,940 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:07,978 INFO L93 Difference]: Finished difference Result 304 states and 449 transitions. [2025-03-04 01:33:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:33:07,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:33:07,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:07,980 INFO L225 Difference]: With dead ends: 304 [2025-03-04 01:33:07,981 INFO L226 Difference]: Without dead ends: 155 [2025-03-04 01:33:07,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:07,982 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:07,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-03-04 01:33:07,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2025-03-04 01:33:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 135 states have (on average 1.4222222222222223) internal successors, (192), 135 states have internal predecessors, (192), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 226 transitions. [2025-03-04 01:33:07,997 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 226 transitions. Word has length 153 [2025-03-04 01:33:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:07,997 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 226 transitions. [2025-03-04 01:33:07,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:07,998 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 226 transitions. [2025-03-04 01:33:07,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:33:07,999 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:07,999 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:08,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 01:33:08,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:08,200 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:08,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1052747601, now seen corresponding path program 1 times [2025-03-04 01:33:08,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:08,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513142366] [2025-03-04 01:33:08,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:08,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:08,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:08,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:08,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:33:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513142366] [2025-03-04 01:33:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513142366] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:33:08,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038423924] [2025-03-04 01:33:08,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:08,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:08,400 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:33:08,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 01:33:08,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:08,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:08,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:08,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:08,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:33:08,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:33:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:33:08,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:33:08,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038423924] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:08,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:33:08,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2025-03-04 01:33:08,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411411364] [2025-03-04 01:33:08,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:08,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:33:08,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:08,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:33:08,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:08,697 INFO L87 Difference]: Start difference. First operand 154 states and 226 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:08,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:08,720 INFO L93 Difference]: Finished difference Result 308 states and 453 transitions. [2025-03-04 01:33:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:33:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:33:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:08,722 INFO L225 Difference]: With dead ends: 308 [2025-03-04 01:33:08,723 INFO L226 Difference]: Without dead ends: 157 [2025-03-04 01:33:08,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:33:08,724 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:08,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:08,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-03-04 01:33:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2025-03-04 01:33:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 137 states have (on average 1.416058394160584) internal successors, (194), 137 states have internal predecessors, (194), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 228 transitions. [2025-03-04 01:33:08,737 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 228 transitions. Word has length 153 [2025-03-04 01:33:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:08,738 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 228 transitions. [2025-03-04 01:33:08,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:08,738 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 228 transitions. [2025-03-04 01:33:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-03-04 01:33:08,739 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:08,739 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:08,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 01:33:08,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:08,940 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:08,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:08,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1051824080, now seen corresponding path program 1 times [2025-03-04 01:33:08,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:08,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448086523] [2025-03-04 01:33:08,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:08,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:08,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:08,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:08,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:08,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 21 proven. 27 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2025-03-04 01:33:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448086523] [2025-03-04 01:33:09,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448086523] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:33:09,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658610405] [2025-03-04 01:33:09,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:09,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:09,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:33:09,141 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 01:33:09,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 01:33:09,338 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-03-04 01:33:09,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-03-04 01:33:09,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:09,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:09,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:33:09,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:33:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:33:09,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:33:09,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658610405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:09,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:33:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-04 01:33:09,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896480966] [2025-03-04 01:33:09,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:09,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:33:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:09,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:33:09,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:33:09,437 INFO L87 Difference]: Start difference. First operand 156 states and 228 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:09,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:09,462 INFO L93 Difference]: Finished difference Result 311 states and 456 transitions. [2025-03-04 01:33:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:33:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 153 [2025-03-04 01:33:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:09,464 INFO L225 Difference]: With dead ends: 311 [2025-03-04 01:33:09,465 INFO L226 Difference]: Without dead ends: 158 [2025-03-04 01:33:09,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:33:09,466 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:09,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-03-04 01:33:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2025-03-04 01:33:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.410071942446043) internal successors, (196), 139 states have internal predecessors, (196), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 230 transitions. [2025-03-04 01:33:09,477 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 230 transitions. Word has length 153 [2025-03-04 01:33:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:09,478 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 230 transitions. [2025-03-04 01:33:09,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 230 transitions. [2025-03-04 01:33:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-04 01:33:09,479 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:09,479 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:09,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 01:33:09,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:33:09,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:09,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:09,680 INFO L85 PathProgramCache]: Analyzing trace with hash -906037650, now seen corresponding path program 1 times [2025-03-04 01:33:09,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:09,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843564574] [2025-03-04 01:33:09,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:09,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:09,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-04 01:33:09,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-04 01:33:09,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:09,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:33:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2025-03-04 01:33:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:33:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843564574] [2025-03-04 01:33:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843564574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:33:10,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 01:33:10,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 01:33:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527350064] [2025-03-04 01:33:10,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:33:10,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:33:10,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:33:10,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:33:10,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 01:33:10,043 INFO L87 Difference]: Start difference. First operand 158 states and 230 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:33:10,101 INFO L93 Difference]: Finished difference Result 317 states and 464 transitions. [2025-03-04 01:33:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:33:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 155 [2025-03-04 01:33:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:33:10,102 INFO L225 Difference]: With dead ends: 317 [2025-03-04 01:33:10,103 INFO L226 Difference]: Without dead ends: 162 [2025-03-04 01:33:10,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 01:33:10,103 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 2 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:33:10,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 636 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:33:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2025-03-04 01:33:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2025-03-04 01:33:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 142 states have (on average 1.408450704225352) internal successors, (200), 142 states have internal predecessors, (200), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-04 01:33:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 234 transitions. [2025-03-04 01:33:10,113 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 234 transitions. Word has length 155 [2025-03-04 01:33:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:33:10,113 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 234 transitions. [2025-03-04 01:33:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-03-04 01:33:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 234 transitions. [2025-03-04 01:33:10,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-03-04 01:33:10,114 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:33:10,114 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:33:10,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 01:33:10,115 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:33:10,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:33:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash 338726831, now seen corresponding path program 1 times [2025-03-04 01:33:10,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:33:10,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763867359] [2025-03-04 01:33:10,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:33:10,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:33:10,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 155 statements into 1 equivalence classes. [2025-03-04 01:33:10,238 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 155 of 155 statements. [2025-03-04 01:33:10,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:33:10,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat