./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9957a8257e625ece47db9a92e288c6545c023c8bdaf68d0d314c8d86ce47979a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:09:25,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:09:25,963 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:09:25,967 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:09:25,967 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:09:25,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:09:25,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:09:25,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:09:25,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:09:25,986 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:09:25,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:09:25,987 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:09:25,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:09:25,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:09:25,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:09:25,989 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:09:25,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:09:25,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:09:25,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:09:25,990 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:09:25,991 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9957a8257e625ece47db9a92e288c6545c023c8bdaf68d0d314c8d86ce47979a [2025-01-08 22:09:26,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:09:26,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:09:26,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:09:26,179 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:09:26,180 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:09:26,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2025-01-08 22:09:27,342 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5db4d7fdd/0e59695fed944016b4186d7b0b0cd8e6/FLAG0bb6a5152 [2025-01-08 22:09:27,544 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:09:27,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i [2025-01-08 22:09:27,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5db4d7fdd/0e59695fed944016b4186d7b0b0cd8e6/FLAG0bb6a5152 [2025-01-08 22:09:27,922 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5db4d7fdd/0e59695fed944016b4186d7b0b0cd8e6 [2025-01-08 22:09:27,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:09:27,925 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:09:27,926 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:09:27,926 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:09:27,929 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:09:27,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:09:27" (1/1) ... [2025-01-08 22:09:27,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33211a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:27, skipping insertion in model container [2025-01-08 22:09:27,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:09:27" (1/1) ... [2025-01-08 22:09:27,939 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:09:28,030 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i[853,866] [2025-01-08 22:09:28,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:09:28,046 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:09:28,055 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_strcpy_ground-1.i[853,866] [2025-01-08 22:09:28,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:09:28,078 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:09:28,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28 WrapperNode [2025-01-08 22:09:28,080 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:09:28,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:09:28,081 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:09:28,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:09:28,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,101 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2025-01-08 22:09:28,102 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:09:28,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:09:28,103 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:09:28,103 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:09:28,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,117 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 2, 4]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-08 22:09:28,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,118 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,122 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:09:28,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:09:28,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:09:28,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:09:28,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (1/1) ... [2025-01-08 22:09:28,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:09:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:28,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-08 22:09:28,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-08 22:09:28,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:09:28,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:09:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:09:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:09:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:09:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:09:28,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:09:28,232 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:09:28,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:09:28,315 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-01-08 22:09:28,315 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:09:28,320 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:09:28,321 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-08 22:09:28,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:09:28 BoogieIcfgContainer [2025-01-08 22:09:28,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:09:28,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:09:28,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:09:28,325 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:09:28,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:09:27" (1/3) ... [2025-01-08 22:09:28,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a77d1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:09:28, skipping insertion in model container [2025-01-08 22:09:28,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:09:28" (2/3) ... [2025-01-08 22:09:28,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a77d1bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:09:28, skipping insertion in model container [2025-01-08 22:09:28,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:09:28" (3/3) ... [2025-01-08 22:09:28,327 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_strcpy_ground-1.i [2025-01-08 22:09:28,336 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:09:28,337 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_strcpy_ground-1.i that has 1 procedures, 16 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:09:28,365 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:09:28,372 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;@2a33e737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:09:28,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:09:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:09:28,377 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:28,377 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:28,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:28,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:28,381 INFO L85 PathProgramCache]: Analyzing trace with hash 222417980, now seen corresponding path program 1 times [2025-01-08 22:09:28,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:28,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951001672] [2025-01-08 22:09:28,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:28,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:28,429 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:09:28,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:09:28,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:28,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:09:28,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:28,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951001672] [2025-01-08 22:09:28,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951001672] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:09:28,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:09:28,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:09:28,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259284868] [2025-01-08 22:09:28,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:09:28,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:09:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:28,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:09:28,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:09:28,552 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:28,568 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2025-01-08 22:09:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:09:28,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-01-08 22:09:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:28,574 INFO L225 Difference]: With dead ends: 30 [2025-01-08 22:09:28,576 INFO L226 Difference]: Without dead ends: 14 [2025-01-08 22:09:28,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:09:28,580 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:28,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:28,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-01-08 22:09:28,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-01-08 22:09:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2025-01-08 22:09:28,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2025-01-08 22:09:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:28,599 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2025-01-08 22:09:28,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,599 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2025-01-08 22:09:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-08 22:09:28,599 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:28,599 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:28,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:09:28,600 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:28,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1107787251, now seen corresponding path program 1 times [2025-01-08 22:09:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767901383] [2025-01-08 22:09:28,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:28,608 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:09:28,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:09:28,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:28,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:09:28,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:28,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767901383] [2025-01-08 22:09:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767901383] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:28,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518018765] [2025-01-08 22:09:28,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:28,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:28,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:28,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:28,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-08 22:09:28,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:09:28,729 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:09:28,729 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:28,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:28,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:09:28,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:28,761 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:09:28,761 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:09:28,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518018765] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:09:28,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:09:28,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-08 22:09:28,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033061362] [2025-01-08 22:09:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:09:28,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:09:28,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:28,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:09:28,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-08 22:09:28,766 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:28,790 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2025-01-08 22:09:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:09:28,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-08 22:09:28,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:28,790 INFO L225 Difference]: With dead ends: 34 [2025-01-08 22:09:28,790 INFO L226 Difference]: Without dead ends: 24 [2025-01-08 22:09:28,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:09:28,791 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:28,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 29 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-08 22:09:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2025-01-08 22:09:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-01-08 22:09:28,794 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2025-01-08 22:09:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:28,794 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-01-08 22:09:28,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-01-08 22:09:28,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-08 22:09:28,794 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:28,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:28,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:09:28,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:28,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:28,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:28,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1050528949, now seen corresponding path program 1 times [2025-01-08 22:09:28,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:28,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907957056] [2025-01-08 22:09:28,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:28,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:29,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:09:29,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:09:29,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:29,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:09:29,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907957056] [2025-01-08 22:09:29,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907957056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:29,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203701961] [2025-01-08 22:09:29,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:29,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:29,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:29,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:29,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-08 22:09:29,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-08 22:09:29,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-08 22:09:29,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:29,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:29,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:09:29,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:09:29,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:29,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:09:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203701961] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:29,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:09:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130291404] [2025-01-08 22:09:29,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:29,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:09:29,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:29,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:09:29,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:09:29,133 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:29,143 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2025-01-08 22:09:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:09:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-08 22:09:29,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:29,144 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:09:29,144 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:09:29,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:09:29,145 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:29,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:09:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-01-08 22:09:29,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-01-08 22:09:29,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 11 [2025-01-08 22:09:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:29,148 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-01-08 22:09:29,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-01-08 22:09:29,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:09:29,148 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:29,148 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:29,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:09:29,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:29,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:29,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash -361139243, now seen corresponding path program 2 times [2025-01-08 22:09:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700098635] [2025-01-08 22:09:29,354 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:09:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:29,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-08 22:09:29,387 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 10 of 14 statements. [2025-01-08 22:09:29,388 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-08 22:09:29,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:09:29,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:29,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700098635] [2025-01-08 22:09:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700098635] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:09:29,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:09:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:09:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234556970] [2025-01-08 22:09:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:09:29,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:09:29,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:29,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:09:29,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:09:29,439 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:29,450 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2025-01-08 22:09:29,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:09:29,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-08 22:09:29,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:29,451 INFO L225 Difference]: With dead ends: 28 [2025-01-08 22:09:29,451 INFO L226 Difference]: Without dead ends: 21 [2025-01-08 22:09:29,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:09:29,451 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:29,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:29,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-08 22:09:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2025-01-08 22:09:29,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-01-08 22:09:29,454 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2025-01-08 22:09:29,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:29,455 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-01-08 22:09:29,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,455 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-01-08 22:09:29,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:09:29,455 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:29,455 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:29,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-08 22:09:29,455 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:29,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:29,456 INFO L85 PathProgramCache]: Analyzing trace with hash 639585868, now seen corresponding path program 1 times [2025-01-08 22:09:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:29,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898273286] [2025-01-08 22:09:29,456 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:29,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-08 22:09:29,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:09:29,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:29,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:09:29,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898273286] [2025-01-08 22:09:29,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898273286] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:29,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508613444] [2025-01-08 22:09:29,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:29,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:29,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:29,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-08 22:09:29,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-08 22:09:29,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:09:29,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:29,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:29,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:09:29,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:29,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508613444] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:29,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2025-01-08 22:09:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523300190] [2025-01-08 22:09:29,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:29,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:09:29,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:29,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:09:29,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:09:29,698 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:29,824 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2025-01-08 22:09:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:09:29,824 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-08 22:09:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:29,825 INFO L225 Difference]: With dead ends: 50 [2025-01-08 22:09:29,825 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:09:29,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=479, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:09:29,826 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:29,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 63 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:09:29,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2025-01-08 22:09:29,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2025-01-08 22:09:29,829 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2025-01-08 22:09:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:29,829 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2025-01-08 22:09:29,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.1333333333333333) internal successors, (32), 15 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2025-01-08 22:09:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:09:29,830 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:29,830 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:29,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:09:30,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:30,031 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:30,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:30,031 INFO L85 PathProgramCache]: Analyzing trace with hash -30215922, now seen corresponding path program 1 times [2025-01-08 22:09:30,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:30,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504539528] [2025-01-08 22:09:30,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:30,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:30,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:09:30,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:09:30,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:30,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504539528] [2025-01-08 22:09:30,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504539528] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395551972] [2025-01-08 22:09:30,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:30,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:30,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:30,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-08 22:09:30,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:09:30,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:09:30,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:30,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:30,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:09:30,364 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:30,413 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:30,706 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395551972] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:30,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:09:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475922919] [2025-01-08 22:09:30,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:30,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:09:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:30,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:09:30,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:09:30,708 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:30,730 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2025-01-08 22:09:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:09:30,731 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-01-08 22:09:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:30,731 INFO L225 Difference]: With dead ends: 57 [2025-01-08 22:09:30,732 INFO L226 Difference]: Without dead ends: 41 [2025-01-08 22:09:30,732 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:09:30,732 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:30,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-08 22:09:30,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-01-08 22:09:30,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.1) internal successors, (44), 40 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:30,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2025-01-08 22:09:30,737 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2025-01-08 22:09:30,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:30,737 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2025-01-08 22:09:30,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.44) internal successors, (36), 25 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:30,737 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2025-01-08 22:09:30,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-01-08 22:09:30,738 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:30,738 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:30,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:09:30,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-08 22:09:30,939 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:30,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1719625458, now seen corresponding path program 2 times [2025-01-08 22:09:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617672209] [2025-01-08 22:09:30,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:09:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:30,954 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-08 22:09:30,976 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-08 22:09:30,977 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:09:30,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:31,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617672209] [2025-01-08 22:09:31,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617672209] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:31,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926668622] [2025-01-08 22:09:31,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:09:31,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:31,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:31,427 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:31,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-08 22:09:31,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-01-08 22:09:31,521 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-01-08 22:09:31,522 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:09:31,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:31,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:09:31,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:31,569 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:09:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926668622] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:32,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:32,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:09:32,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318228258] [2025-01-08 22:09:32,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:32,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:09:32,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:32,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:09:32,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:09:32,159 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:32,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:32,209 INFO L93 Difference]: Finished difference Result 81 states and 110 transitions. [2025-01-08 22:09:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:09:32,210 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-01-08 22:09:32,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:32,210 INFO L225 Difference]: With dead ends: 81 [2025-01-08 22:09:32,210 INFO L226 Difference]: Without dead ends: 65 [2025-01-08 22:09:32,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:09:32,211 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:32,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-08 22:09:32,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2025-01-08 22:09:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.0625) internal successors, (68), 64 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2025-01-08 22:09:32,217 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 36 [2025-01-08 22:09:32,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:32,217 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2025-01-08 22:09:32,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2025-01-08 22:09:32,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-08 22:09:32,218 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:32,219 INFO L218 NwaCegarLoop]: trace histogram [46, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:32,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:09:32,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:32,423 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:32,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 476571918, now seen corresponding path program 3 times [2025-01-08 22:09:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862201603] [2025-01-08 22:09:32,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:09:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:32,452 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 24 equivalence classes. [2025-01-08 22:09:32,457 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 60 statements. [2025-01-08 22:09:32,457 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:09:32,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:09:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:32,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862201603] [2025-01-08 22:09:32,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862201603] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:32,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164271149] [2025-01-08 22:09:32,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:09:32,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:32,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:32,721 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:32,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-08 22:09:32,789 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 60 statements into 24 equivalence classes. [2025-01-08 22:09:32,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 16 of 60 statements. [2025-01-08 22:09:32,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:09:32,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:32,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:09:32,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:33,064 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 11 [2025-01-08 22:09:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:09:33,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:33,138 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:09:33,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2025-01-08 22:09:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1084 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:09:33,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164271149] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:33,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:33,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:09:33,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521983135] [2025-01-08 22:09:33,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:33,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:09:33,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:33,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:09:33,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:09:33,194 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:33,241 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2025-01-08 22:09:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:09:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2025-01-08 22:09:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:33,242 INFO L225 Difference]: With dead ends: 70 [2025-01-08 22:09:33,242 INFO L226 Difference]: Without dead ends: 68 [2025-01-08 22:09:33,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:09:33,243 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:33,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-08 22:09:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2025-01-08 22:09:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2025-01-08 22:09:33,251 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 60 [2025-01-08 22:09:33,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:33,251 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2025-01-08 22:09:33,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2025-01-08 22:09:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-08 22:09:33,252 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:33,252 INFO L218 NwaCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:33,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:09:33,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-08 22:09:33,453 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:33,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1603072011, now seen corresponding path program 1 times [2025-01-08 22:09:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439171474] [2025-01-08 22:09:33,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:33,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-08 22:09:33,519 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-08 22:09:33,519 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:33,519 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:34,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439171474] [2025-01-08 22:09:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439171474] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156937063] [2025-01-08 22:09:34,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:34,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:34,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:34,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-08 22:09:34,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-08 22:09:34,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-08 22:09:34,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:34,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:34,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:09:34,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:35,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:35,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1086 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:37,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156937063] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:37,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:37,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-01-08 22:09:37,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888647257] [2025-01-08 22:09:37,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:37,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-01-08 22:09:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:37,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-01-08 22:09:37,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:09:37,151 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:37,249 INFO L93 Difference]: Finished difference Result 133 states and 186 transitions. [2025-01-08 22:09:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:09:37,249 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-01-08 22:09:37,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:37,250 INFO L225 Difference]: With dead ends: 133 [2025-01-08 22:09:37,250 INFO L226 Difference]: Without dead ends: 115 [2025-01-08 22:09:37,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:09:37,252 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:37,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:09:37,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-08 22:09:37,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-01-08 22:09:37,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0350877192982457) internal successors, (118), 114 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2025-01-08 22:09:37,260 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 63 [2025-01-08 22:09:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:37,261 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2025-01-08 22:09:37,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.134020618556701) internal successors, (110), 97 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2025-01-08 22:09:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-01-08 22:09:37,262 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:37,262 INFO L218 NwaCegarLoop]: trace histogram [94, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:37,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:09:37,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:37,463 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:37,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash 292581365, now seen corresponding path program 2 times [2025-01-08 22:09:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:37,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142064932] [2025-01-08 22:09:37,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:09:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:37,497 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes. [2025-01-08 22:09:37,542 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-01-08 22:09:37,542 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:09:37,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:42,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142064932] [2025-01-08 22:09:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142064932] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963885318] [2025-01-08 22:09:42,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:09:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:42,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:42,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:42,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-08 22:09:42,217 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 111 statements into 2 equivalence classes. [2025-01-08 22:09:42,303 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-01-08 22:09:42,303 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:09:42,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:42,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-01-08 22:09:42,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:42,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:50,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:09:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963885318] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:50,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-01-08 22:09:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680765517] [2025-01-08 22:09:50,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:50,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-01-08 22:09:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:50,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-01-08 22:09:50,463 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-08 22:09:50,464 INFO L87 Difference]: Start difference. First operand 115 states and 118 transitions. Second operand has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:50,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:50,692 INFO L93 Difference]: Finished difference Result 229 states and 330 transitions. [2025-01-08 22:09:50,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-08 22:09:50,696 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2025-01-08 22:09:50,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:50,697 INFO L225 Difference]: With dead ends: 229 [2025-01-08 22:09:50,697 INFO L226 Difference]: Without dead ends: 211 [2025-01-08 22:09:50,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-01-08 22:09:50,700 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:50,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:09:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-08 22:09:50,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2025-01-08 22:09:50,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.019047619047619) internal successors, (214), 210 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 214 transitions. [2025-01-08 22:09:50,712 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 214 transitions. Word has length 111 [2025-01-08 22:09:50,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:50,712 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 214 transitions. [2025-01-08 22:09:50,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 1.067357512953368) internal successors, (206), 193 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:50,713 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 214 transitions. [2025-01-08 22:09:50,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2025-01-08 22:09:50,714 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:50,714 INFO L218 NwaCegarLoop]: trace histogram [190, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:50,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:09:50,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:50,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:50,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash -693424139, now seen corresponding path program 3 times [2025-01-08 22:09:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:50,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695502473] [2025-01-08 22:09:50,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:09:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:50,979 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 207 statements into 96 equivalence classes. [2025-01-08 22:09:50,983 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 207 statements. [2025-01-08 22:09:50,983 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:09:50,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:09:51,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:09:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695502473] [2025-01-08 22:09:51,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695502473] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:09:51,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258166735] [2025-01-08 22:09:51,017 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:09:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:51,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:09:51,019 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:09:51,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-08 22:09:51,226 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 207 statements into 96 equivalence classes. [2025-01-08 22:09:51,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 19 of 207 statements. [2025-01-08 22:09:51,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:09:51,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:09:51,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-08 22:09:51,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:09:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:09:51,456 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:09:51,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18150 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:09:51,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258166735] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:09:51,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:09:51,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:09:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409787243] [2025-01-08 22:09:51,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:09:51,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:09:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:09:51,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:09:51,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:09:51,644 INFO L87 Difference]: Start difference. First operand 211 states and 214 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:09:51,671 INFO L93 Difference]: Finished difference Result 223 states and 227 transitions. [2025-01-08 22:09:51,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:09:51,671 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2025-01-08 22:09:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:09:51,672 INFO L225 Difference]: With dead ends: 223 [2025-01-08 22:09:51,672 INFO L226 Difference]: Without dead ends: 213 [2025-01-08 22:09:51,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 408 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:09:51,673 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:09:51,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 51 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:09:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2025-01-08 22:09:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2025-01-08 22:09:51,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.018957345971564) internal successors, (215), 211 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 215 transitions. [2025-01-08 22:09:51,688 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 215 transitions. Word has length 207 [2025-01-08 22:09:51,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:09:51,688 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 215 transitions. [2025-01-08 22:09:51,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:09:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 215 transitions. [2025-01-08 22:09:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2025-01-08 22:09:51,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:09:51,690 INFO L218 NwaCegarLoop]: trace histogram [190, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:09:51,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:09:51,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:09:51,891 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:09:51,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:09:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash -478100834, now seen corresponding path program 1 times [2025-01-08 22:09:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:09:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217175414] [2025-01-08 22:09:51,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:09:51,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:09:51,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 211 statements into 1 equivalence classes. [2025-01-08 22:09:52,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 211 of 211 statements. [2025-01-08 22:09:52,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:09:52,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:10:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 18157 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:10:06,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:10:06,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217175414] [2025-01-08 22:10:06,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217175414] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:10:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996774096] [2025-01-08 22:10:06,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:10:06,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:10:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:10:06,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:10:06,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:10:06,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 211 statements into 1 equivalence classes. [2025-01-08 22:10:06,837 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 211 of 211 statements. [2025-01-08 22:10:06,838 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:10:06,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:10:06,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1807 conjuncts, 192 conjuncts are in the unsatisfiable core [2025-01-08 22:10:06,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:10:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18157 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:10:07,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:10:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18157 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:10:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996774096] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:10:35,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:10:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2025-01-08 22:10:35,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84742307] [2025-01-08 22:10:35,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:10:35,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2025-01-08 22:10:35,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:10:35,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2025-01-08 22:10:35,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-01-08 22:10:35,431 INFO L87 Difference]: Start difference. First operand 212 states and 215 transitions. Second operand has 385 states, 385 states have (on average 1.0363636363636364) internal successors, (399), 385 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:10:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:10:36,446 INFO L93 Difference]: Finished difference Result 423 states and 620 transitions. [2025-01-08 22:10:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2025-01-08 22:10:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 1.0363636363636364) internal successors, (399), 385 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2025-01-08 22:10:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:10:36,449 INFO L225 Difference]: With dead ends: 423 [2025-01-08 22:10:36,450 INFO L226 Difference]: Without dead ends: 404 [2025-01-08 22:10:36,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2025-01-08 22:10:36,454 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:10:36,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:10:36,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2025-01-08 22:10:36,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2025-01-08 22:10:36,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.0099255583126552) internal successors, (407), 403 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:10:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 407 transitions. [2025-01-08 22:10:36,483 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 407 transitions. Word has length 211 [2025-01-08 22:10:36,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:10:36,483 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 407 transitions. [2025-01-08 22:10:36,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 1.0363636363636364) internal successors, (399), 385 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:10:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 407 transitions. [2025-01-08 22:10:36,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2025-01-08 22:10:36,487 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:10:36,487 INFO L218 NwaCegarLoop]: trace histogram [382, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:10:36,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:10:36,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-08 22:10:36,691 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:10:36,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:10:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1144406686, now seen corresponding path program 2 times [2025-01-08 22:10:36,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:10:36,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100289385] [2025-01-08 22:10:36,692 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:10:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:10:36,790 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 403 statements into 2 equivalence classes. [2025-01-08 22:10:37,178 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 403 of 403 statements. [2025-01-08 22:10:37,178 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:10:37,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat