./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-64.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-64.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 4ba4618d2c12b624306627073ace8aff518621333cf7d938808dd7313f83bbaa --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 01:31:10,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 01:31:11,054 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 01:31:11,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 01:31:11,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 01:31:11,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 01:31:11,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 01:31:11,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 01:31:11,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 01:31:11,080 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 01:31:11,080 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 01:31:11,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 01:31:11,080 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 01:31:11,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 01:31:11,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 01:31:11,082 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 01:31:11,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:31:11,083 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 01:31:11,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 01:31:11,084 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 01:31:11,084 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 -> 4ba4618d2c12b624306627073ace8aff518621333cf7d938808dd7313f83bbaa [2025-03-04 01:31:11,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 01:31:11,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 01:31:11,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 01:31:11,307 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 01:31:11,307 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 01:31:11,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-64.i [2025-03-04 01:31:12,504 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2b4096e/3a2d19530a3e471db2dea742ce9b80e1/FLAGc78c107ec [2025-03-04 01:31:12,775 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 01:31:12,776 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-64.i [2025-03-04 01:31:12,785 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2b4096e/3a2d19530a3e471db2dea742ce9b80e1/FLAGc78c107ec [2025-03-04 01:31:13,053 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c2b4096e/3a2d19530a3e471db2dea742ce9b80e1 [2025-03-04 01:31:13,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 01:31:13,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 01:31:13,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 01:31:13,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 01:31:13,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 01:31:13,061 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291fcf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13, skipping insertion in model container [2025-03-04 01:31:13,062 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,081 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 01:31:13,186 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-64.i[916,929] [2025-03-04 01:31:13,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:31:13,258 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 01:31:13,265 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-64.i[916,929] [2025-03-04 01:31:13,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 01:31:13,310 INFO L204 MainTranslator]: Completed translation [2025-03-04 01:31:13,311 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13 WrapperNode [2025-03-04 01:31:13,312 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 01:31:13,313 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 01:31:13,314 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 01:31:13,314 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 01:31:13,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,381 INFO L138 Inliner]: procedures = 29, calls = 177, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 555 [2025-03-04 01:31:13,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 01:31:13,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 01:31:13,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 01:31:13,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 01:31:13,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,425 INFO L175 MemorySlicer]: Split 131 memory accesses to 16 slices as follows [2, 15, 6, 10, 11, 8, 8, 8, 10, 7, 6, 8, 3, 12, 7, 10]. 11 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]. The 18 writes are split as follows [0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1]. [2025-03-04 01:31:13,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,442 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,443 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,447 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 01:31:13,452 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 01:31:13,452 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 01:31:13,452 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 01:31:13,452 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (1/1) ... [2025-03-04 01:31:13,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 01:31:13,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:13,482 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 01:31:13,484 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 01:31:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 01:31:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2025-03-04 01:31:13,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#9 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#10 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#11 [2025-03-04 01:31:13,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#12 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#13 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#14 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#15 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#5 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#6 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#7 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#8 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#9 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#10 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#11 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#12 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#13 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#14 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#15 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2025-03-04 01:31:13,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#5 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#6 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#7 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#8 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#9 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#10 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#11 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#12 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#13 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#14 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#15 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 01:31:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2025-03-04 01:31:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2025-03-04 01:31:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2025-03-04 01:31:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 01:31:13,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 01:31:13,681 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 01:31:13,682 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 01:31:14,096 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L123: havoc property_#t~mem92#1;havoc property_#t~ite106#1;havoc property_#t~mem96#1;havoc property_#t~mem93#1;havoc property_#t~ite95#1;havoc property_#t~mem94#1;havoc property_#t~ite105#1;havoc property_#t~mem97#1;havoc property_#t~mem98#1;havoc property_#t~mem99#1;havoc property_#t~ite102#1;havoc property_#t~mem101#1;havoc property_#t~mem100#1;havoc property_#t~mem104#1;havoc property_#t~mem103#1;havoc property_#t~mem107#1;havoc property_#t~mem108#1;havoc property_#t~ite113#1;havoc property_#t~mem112#1;havoc property_#t~mem109#1;havoc property_#t~mem110#1;havoc property_#t~short111#1;havoc property_#t~short114#1;havoc property_#t~mem115#1;havoc property_#t~ite125#1;havoc property_#t~mem119#1;havoc property_#t~mem118#1;havoc property_#t~mem116#1;havoc property_#t~mem117#1;havoc property_#t~short120#1;havoc property_#t~ite124#1;havoc property_#t~mem123#1;havoc property_#t~mem121#1;havoc property_#t~mem122#1;havoc property_#t~short126#1;havoc property_#t~mem129#1;havoc property_#t~mem127#1;havoc property_#t~mem128#1;havoc property_#t~bitwise130#1;havoc property_#t~mem131#1;havoc property_#t~ite140#1;havoc property_#t~mem132#1;havoc property_#t~ite137#1;havoc property_#t~mem134#1;havoc property_#t~mem133#1;havoc property_#t~mem136#1;havoc property_#t~mem135#1;havoc property_#t~mem139#1;havoc property_#t~mem138#1;havoc property_#t~short141#1; [2025-03-04 01:31:14,152 INFO L? ?]: Removed 132 outVars from TransFormulas that were not future-live. [2025-03-04 01:31:14,152 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 01:31:14,170 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 01:31:14,171 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 01:31:14,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:31:14 BoogieIcfgContainer [2025-03-04 01:31:14,171 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 01:31:14,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 01:31:14,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 01:31:14,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 01:31:14,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 01:31:13" (1/3) ... [2025-03-04 01:31:14,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34844b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:31:14, skipping insertion in model container [2025-03-04 01:31:14,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 01:31:13" (2/3) ... [2025-03-04 01:31:14,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34844b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 01:31:14, skipping insertion in model container [2025-03-04 01:31:14,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 01:31:14" (3/3) ... [2025-03-04 01:31:14,177 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-64.i [2025-03-04 01:31:14,198 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 01:31:14,199 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_variablewrapping_wrapper-p_file-64.i that has 2 procedures, 128 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 01:31:14,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 01:31:14,252 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;@1ba3ee2e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 01:31:14,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 01:31:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:31:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-04 01:31:14,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:14,270 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:14,271 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:14,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash 469386705, now seen corresponding path program 1 times [2025-03-04 01:31:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:14,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360768666] [2025-03-04 01:31:14,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:14,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:31:14,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:31:14,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:14,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-04 01:31:14,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:14,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360768666] [2025-03-04 01:31:14,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360768666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:31:14,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30876157] [2025-03-04 01:31:14,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:14,562 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 01:31:14,565 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 01:31:14,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:31:14,805 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:31:14,805 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:14,805 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:14,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 01:31:14,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:31:14,833 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-03-04 01:31:14,833 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:31:14,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30876157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:31:14,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:31:14,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 01:31:14,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349655264] [2025-03-04 01:31:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:31:14,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 01:31:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:14,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 01:31:14,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:31:14,852 INFO L87 Difference]: Start difference. First operand has 128 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 106 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-04 01:31:14,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:14,879 INFO L93 Difference]: Finished difference Result 250 states and 395 transitions. [2025-03-04 01:31:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 01:31:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2025-03-04 01:31:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:14,888 INFO L225 Difference]: With dead ends: 250 [2025-03-04 01:31:14,889 INFO L226 Difference]: Without dead ends: 125 [2025-03-04 01:31:14,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 01:31:14,896 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:14,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:31:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-03-04 01:31:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-03-04 01:31:14,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 103 states have (on average 1.4077669902912622) internal successors, (145), 103 states have internal predecessors, (145), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:31:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2025-03-04 01:31:14,936 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 159 [2025-03-04 01:31:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:14,936 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2025-03-04 01:31:14,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2025-03-04 01:31:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2025-03-04 01:31:14,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2025-03-04 01:31:14,939 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:14,940 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:14,966 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 01:31:15,158 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 01:31:15,158 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:15,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1798379265, now seen corresponding path program 1 times [2025-03-04 01:31:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167201418] [2025-03-04 01:31:15,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:15,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:31:15,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:31:15,242 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:15,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:15,577 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:31:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167201418] [2025-03-04 01:31:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167201418] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:31:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118304545] [2025-03-04 01:31:15,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:15,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:15,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:15,580 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 01:31:15,582 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 01:31:15,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 159 statements into 1 equivalence classes. [2025-03-04 01:31:15,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 159 of 159 statements. [2025-03-04 01:31:15,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:15,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:15,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-04 01:31:15,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:31:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:31:15,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:31:15,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118304545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:31:15,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:31:15,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2025-03-04 01:31:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470157724] [2025-03-04 01:31:15,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:31:15,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 01:31:15,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:15,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 01:31:15,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:31:15,868 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:15,922 INFO L93 Difference]: Finished difference Result 249 states and 370 transitions. [2025-03-04 01:31:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 01:31:15,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 159 [2025-03-04 01:31:15,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:15,924 INFO L225 Difference]: With dead ends: 249 [2025-03-04 01:31:15,927 INFO L226 Difference]: Without dead ends: 127 [2025-03-04 01:31:15,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:31:15,928 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:15,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 532 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:31:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-03-04 01:31:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2025-03-04 01:31:15,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.4) internal successors, (147), 105 states have internal predecessors, (147), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:31:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 187 transitions. [2025-03-04 01:31:15,943 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 187 transitions. Word has length 159 [2025-03-04 01:31:15,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:15,944 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 187 transitions. [2025-03-04 01:31:15,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 187 transitions. [2025-03-04 01:31:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2025-03-04 01:31:15,948 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:15,948 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:15,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 01:31:16,148 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 01:31:16,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:16,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1987892837, now seen corresponding path program 1 times [2025-03-04 01:31:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494918524] [2025-03-04 01:31:16,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:16,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 01:31:16,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 01:31:16,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:16,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:31:16,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:16,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494918524] [2025-03-04 01:31:16,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494918524] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:31:16,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390065811] [2025-03-04 01:31:16,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:16,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:16,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:16,454 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 01:31:16,464 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 01:31:16,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 161 statements into 1 equivalence classes. [2025-03-04 01:31:16,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 161 of 161 statements. [2025-03-04 01:31:16,668 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:16,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:16,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-04 01:31:16,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:31:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:31:16,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 01:31:16,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390065811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:31:16,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:31:16,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-04 01:31:16,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015000307] [2025-03-04 01:31:16,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:31:16,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 01:31:16,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:16,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 01:31:16,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:31:16,708 INFO L87 Difference]: Start difference. First operand 127 states and 187 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:16,759 INFO L93 Difference]: Finished difference Result 254 states and 375 transitions. [2025-03-04 01:31:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 01:31:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2025-03-04 01:31:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:16,761 INFO L225 Difference]: With dead ends: 254 [2025-03-04 01:31:16,762 INFO L226 Difference]: Without dead ends: 130 [2025-03-04 01:31:16,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 01:31:16,763 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:16,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 703 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 01:31:16,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-03-04 01:31:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2025-03-04 01:31:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 108 states have internal predecessors, (150), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-04 01:31:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 190 transitions. [2025-03-04 01:31:16,777 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 190 transitions. Word has length 161 [2025-03-04 01:31:16,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:16,778 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 190 transitions. [2025-03-04 01:31:16,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 190 transitions. [2025-03-04 01:31:16,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-04 01:31:16,780 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:16,781 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:16,788 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 01:31:16,981 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 01:31:16,981 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:16,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:16,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1684963320, now seen corresponding path program 1 times [2025-03-04 01:31:16,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:16,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795135498] [2025-03-04 01:31:16,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:16,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:17,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-04 01:31:17,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-04 01:31:17,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:17,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2025-03-04 01:31:17,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:17,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795135498] [2025-03-04 01:31:17,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795135498] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 01:31:17,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 01:31:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-04 01:31:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191506239] [2025-03-04 01:31:17,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 01:31:17,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 01:31:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:17,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 01:31:17,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-04 01:31:17,613 INFO L87 Difference]: Start difference. First operand 130 states and 190 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:17,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:17,925 INFO L93 Difference]: Finished difference Result 435 states and 636 transitions. [2025-03-04 01:31:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 01:31:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2025-03-04 01:31:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:17,928 INFO L225 Difference]: With dead ends: 435 [2025-03-04 01:31:17,929 INFO L226 Difference]: Without dead ends: 308 [2025-03-04 01:31:17,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-03-04 01:31:17,931 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 317 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:17,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 875 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 01:31:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-03-04 01:31:17,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 215. [2025-03-04 01:31:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 172 states have (on average 1.372093023255814) internal successors, (236), 172 states have internal predecessors, (236), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2025-03-04 01:31:17,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 316 transitions. [2025-03-04 01:31:17,964 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 316 transitions. Word has length 162 [2025-03-04 01:31:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:17,965 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 316 transitions. [2025-03-04 01:31:17,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2025-03-04 01:31:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 316 transitions. [2025-03-04 01:31:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-04 01:31:17,967 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:17,967 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:17,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 01:31:17,967 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:17,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1097968669, now seen corresponding path program 1 times [2025-03-04 01:31:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082989748] [2025-03-04 01:31:17,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:17,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-04 01:31:18,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-04 01:31:18,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:18,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:31:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082989748] [2025-03-04 01:31:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082989748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:31:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556992410] [2025-03-04 01:31:18,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:18,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:18,744 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 01:31:18,746 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 01:31:18,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-04 01:31:18,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-04 01:31:18,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:18,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:18,959 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-04 01:31:18,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:31:19,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 01:31:19,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-03-04 01:31:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 6 proven. 382 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2025-03-04 01:31:19,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 01:31:19,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2025-03-04 01:31:20,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2025-03-04 01:31:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2025-03-04 01:31:20,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556992410] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 01:31:20,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 01:31:20,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 28 [2025-03-04 01:31:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319635129] [2025-03-04 01:31:20,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 01:31:20,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-03-04 01:31:20,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:20,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-03-04 01:31:20,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2025-03-04 01:31:20,207 INFO L87 Difference]: Start difference. First operand 215 states and 316 transitions. Second operand has 28 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 5 states have call predecessors, (60), 7 states have call successors, (60) [2025-03-04 01:31:22,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:22,790 INFO L93 Difference]: Finished difference Result 565 states and 809 transitions. [2025-03-04 01:31:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-03-04 01:31:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 5 states have call predecessors, (60), 7 states have call successors, (60) Word has length 163 [2025-03-04 01:31:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:22,793 INFO L225 Difference]: With dead ends: 565 [2025-03-04 01:31:22,793 INFO L226 Difference]: Without dead ends: 421 [2025-03-04 01:31:22,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 312 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=747, Invalid=4953, Unknown=0, NotChecked=0, Total=5700 [2025-03-04 01:31:22,796 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 2050 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:22,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 3240 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 01:31:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2025-03-04 01:31:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 301. [2025-03-04 01:31:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 241 states have (on average 1.3443983402489628) internal successors, (324), 242 states have internal predecessors, (324), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-04 01:31:22,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 430 transitions. [2025-03-04 01:31:22,821 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 430 transitions. Word has length 163 [2025-03-04 01:31:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:22,821 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 430 transitions. [2025-03-04 01:31:22,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 7 states have call successors, (60), 3 states have call predecessors, (60), 5 states have return successors, (60), 5 states have call predecessors, (60), 7 states have call successors, (60) [2025-03-04 01:31:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 430 transitions. [2025-03-04 01:31:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-04 01:31:22,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:22,823 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:22,830 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 01:31:23,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:23,023 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:23,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:23,024 INFO L85 PathProgramCache]: Analyzing trace with hash -420070678, now seen corresponding path program 1 times [2025-03-04 01:31:23,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:23,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246843053] [2025-03-04 01:31:23,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:23,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:23,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:31:23,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:31:23,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:23,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 01:31:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406877774] [2025-03-04 01:31:23,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:23,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:23,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 01:31:23,149 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 01:31:23,150 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 01:31:23,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:31:23,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:31:23,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:23,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 01:31:23,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-03-04 01:31:23,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 01:31:23,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 01:31:23,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-04 01:31:24,256 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 13 proven. 407 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-03-04 01:31:24,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 01:31:25,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 99 [2025-03-04 01:31:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 01:31:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246843053] [2025-03-04 01:31:25,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 01:31:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406877774] [2025-03-04 01:31:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406877774] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 01:31:25,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 01:31:25,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2025-03-04 01:31:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105798505] [2025-03-04 01:31:25,212 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 01:31:25,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 01:31:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 01:31:25,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 01:31:25,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2025-03-04 01:31:25,213 INFO L87 Difference]: Start difference. First operand 301 states and 430 transitions. Second operand has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-04 01:31:25,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 01:31:25,795 INFO L93 Difference]: Finished difference Result 634 states and 907 transitions. [2025-03-04 01:31:25,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 01:31:25,796 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 164 [2025-03-04 01:31:25,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 01:31:25,799 INFO L225 Difference]: With dead ends: 634 [2025-03-04 01:31:25,799 INFO L226 Difference]: Without dead ends: 412 [2025-03-04 01:31:25,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2025-03-04 01:31:25,802 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 463 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 01:31:25,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 1203 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 01:31:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2025-03-04 01:31:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 306. [2025-03-04 01:31:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 245 states have (on average 1.3387755102040817) internal successors, (328), 246 states have internal predecessors, (328), 53 states have call successors, (53), 7 states have call predecessors, (53), 7 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2025-03-04 01:31:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 434 transitions. [2025-03-04 01:31:25,822 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 434 transitions. Word has length 164 [2025-03-04 01:31:25,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 01:31:25,824 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 434 transitions. [2025-03-04 01:31:25,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2025-03-04 01:31:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 434 transitions. [2025-03-04 01:31:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-04 01:31:25,826 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 01:31:25,826 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 01:31:25,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 01:31:26,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 01:31:26,027 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 01:31:26,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 01:31:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1797687275, now seen corresponding path program 1 times [2025-03-04 01:31:26,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 01:31:26,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850451461] [2025-03-04 01:31:26,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 01:31:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 01:31:26,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-04 01:31:26,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-04 01:31:26,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 01:31:26,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat