./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/array_3-2.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/loop-acceleration/array_3-2.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 42bdab47928922c9249a376933fe7b7a33d855d426cfe04eb271066ef5c44d0a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:54:38,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:54:39,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:54:39,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:54:39,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:54:39,041 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:54:39,042 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:54:39,042 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:54:39,042 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:54:39,042 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:54:39,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:54:39,042 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:54:39,043 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:54:39,043 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:54:39,043 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:54:39,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:54:39,043 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:54:39,043 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:54:39,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:54:39,044 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:54:39,045 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:39,045 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:39,045 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:54:39,045 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:54:39,046 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:54:39,046 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 -> 42bdab47928922c9249a376933fe7b7a33d855d426cfe04eb271066ef5c44d0a [2025-01-09 02:54:39,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:54:39,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:54:39,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:54:39,390 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:54:39,390 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:54:39,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array_3-2.i [2025-01-09 02:54:40,673 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a926878c1/6d86bc870e684a2382b00e2bb77d5f3c/FLAG8dfa1f0b7 [2025-01-09 02:54:40,905 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:54:40,905 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array_3-2.i [2025-01-09 02:54:40,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a926878c1/6d86bc870e684a2382b00e2bb77d5f3c/FLAG8dfa1f0b7 [2025-01-09 02:54:40,936 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a926878c1/6d86bc870e684a2382b00e2bb77d5f3c [2025-01-09 02:54:40,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:54:40,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:54:40,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:54:40,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:54:40,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:54:40,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:54:40" (1/1) ... [2025-01-09 02:54:40,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@181036ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:40, skipping insertion in model container [2025-01-09 02:54:40,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:54:40" (1/1) ... [2025-01-09 02:54:40,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:54:41,089 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/loop-acceleration/array_3-2.i[809,822] [2025-01-09 02:54:41,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:54:41,112 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:54:41,122 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/loop-acceleration/array_3-2.i[809,822] [2025-01-09 02:54:41,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:54:41,147 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:54:41,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41 WrapperNode [2025-01-09 02:54:41,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:54:41,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:54:41,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:54:41,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:54:41,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,178 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2025-01-09 02:54:41,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:54:41,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:54:41,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:54:41,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:54:41,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,203 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-09 02:54:41,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:54:41,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:54:41,221 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:54:41,221 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:54:41,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (1/1) ... [2025-01-09 02:54:41,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:54:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:41,259 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) [2025-01-09 02:54:41,262 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 [2025-01-09 02:54:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:54:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:54:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 02:54:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 02:54:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 02:54:41,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 02:54:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:54:41,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:54:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 02:54:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 02:54:41,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 02:54:41,347 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:54:41,349 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:54:41,451 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-09 02:54:41,451 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:54:41,460 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:54:41,461 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 02:54:41,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:54:41 BoogieIcfgContainer [2025-01-09 02:54:41,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:54:41,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:54:41,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:54:41,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:54:41,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:54:40" (1/3) ... [2025-01-09 02:54:41,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942e629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:54:41, skipping insertion in model container [2025-01-09 02:54:41,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:54:41" (2/3) ... [2025-01-09 02:54:41,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@942e629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:54:41, skipping insertion in model container [2025-01-09 02:54:41,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:54:41" (3/3) ... [2025-01-09 02:54:41,470 INFO L128 eAbstractionObserver]: Analyzing ICFG array_3-2.i [2025-01-09 02:54:41,483 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:54:41,485 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_3-2.i that has 1 procedures, 15 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 02:54:41,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:54:41,542 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;@5288749, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:54:41,542 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:54:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) [2025-01-09 02:54:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 02:54:41,551 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:41,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:41,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:41,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1808290057, now seen corresponding path program 1 times [2025-01-09 02:54:41,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819566264] [2025-01-09 02:54:41,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:41,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:41,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 02:54:41,637 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 02:54:41,638 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:41,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:41,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:41,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819566264] [2025-01-09 02:54:41,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819566264] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:41,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:54:41,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 02:54:41,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348619097] [2025-01-09 02:54:41,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:41,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 02:54:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:41,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 02:54:41,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 02:54:41,769 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-01-09 02:54:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:41,816 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2025-01-09 02:54:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 02:54:41,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2025-01-09 02:54:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:41,825 INFO L225 Difference]: With dead ends: 33 [2025-01-09 02:54:41,825 INFO L226 Difference]: Without dead ends: 17 [2025-01-09 02:54:41,830 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 [2025-01-09 02:54:41,833 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:41,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-09 02:54:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2025-01-09 02:54:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2025-01-09 02:54:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-01-09 02:54:41,866 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2025-01-09 02:54:41,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:41,867 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-01-09 02:54:41,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-01-09 02:54:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-01-09 02:54:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 02:54:41,868 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:41,868 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:41,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:54:41,869 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:41,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:41,869 INFO L85 PathProgramCache]: Analyzing trace with hash -379906958, now seen corresponding path program 1 times [2025-01-09 02:54:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:41,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109280603] [2025-01-09 02:54:41,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:41,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:41,881 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:54:41,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:54:41,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:41,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:41,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:41,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109280603] [2025-01-09 02:54:41,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109280603] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:41,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138812286] [2025-01-09 02:54:41,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:41,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:41,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:41,990 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) [2025-01-09 02:54:41,993 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 [2025-01-09 02:54:42,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:54:42,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:54:42,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:42,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:42,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 02:54:42,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 02:54:42,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 02:54:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138812286] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 02:54:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-01-09 02:54:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479911487] [2025-01-09 02:54:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:42,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:54:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:42,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:54:42,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-01-09 02:54:42,125 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 02:54:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:42,173 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2025-01-09 02:54:42,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:54:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2025-01-09 02:54:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:42,174 INFO L225 Difference]: With dead ends: 25 [2025-01-09 02:54:42,175 INFO L226 Difference]: Without dead ends: 17 [2025-01-09 02:54:42,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:54:42,176 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:42,177 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-09 02:54:42,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2025-01-09 02:54:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2025-01-09 02:54:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2025-01-09 02:54:42,181 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 10 [2025-01-09 02:54:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:42,182 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2025-01-09 02:54:42,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 02:54:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2025-01-09 02:54:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 02:54:42,184 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:42,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:42,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 02:54:42,384 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 [2025-01-09 02:54:42,385 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:42,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash -381754000, now seen corresponding path program 1 times [2025-01-09 02:54:42,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:42,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026802308] [2025-01-09 02:54:42,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:42,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:42,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:54:42,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:54:42,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:42,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:42,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026802308] [2025-01-09 02:54:42,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026802308] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:42,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143576232] [2025-01-09 02:54:42,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:42,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:42,477 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) [2025-01-09 02:54:42,480 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 [2025-01-09 02:54:42,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:54:42,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:54:42,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:42,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:42,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-09 02:54:42,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:42,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:54:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143576232] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:42,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-09 02:54:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120654709] [2025-01-09 02:54:42,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:42,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 02:54:42,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:42,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 02:54:42,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:54:42,581 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2025-01-09 02:54:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:42,647 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2025-01-09 02:54:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 02:54:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10 [2025-01-09 02:54:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:42,650 INFO L225 Difference]: With dead ends: 45 [2025-01-09 02:54:42,650 INFO L226 Difference]: Without dead ends: 35 [2025-01-09 02:54:42,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:54:42,651 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:42,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 35 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:54:42,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-09 02:54:42,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2025-01-09 02:54:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2025-01-09 02:54:42,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-01-09 02:54:42,660 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2025-01-09 02:54:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:42,661 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-01-09 02:54:42,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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) [2025-01-09 02:54:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-01-09 02:54:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-09 02:54:42,662 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:42,662 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:42,668 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 02:54:42,862 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 [2025-01-09 02:54:42,863 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:42,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash -842933680, now seen corresponding path program 2 times [2025-01-09 02:54:42,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:42,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159388623] [2025-01-09 02:54:42,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:42,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:42,878 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-01-09 02:54:42,894 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 13 statements. [2025-01-09 02:54:42,894 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 02:54:42,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 02:54:42,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:42,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159388623] [2025-01-09 02:54:42,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159388623] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:42,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:54:42,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:54:42,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238527573] [2025-01-09 02:54:42,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:42,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:54:42,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:42,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:54:42,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:54:42,999 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 02:54:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:43,026 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2025-01-09 02:54:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:54:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 13 [2025-01-09 02:54:43,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:43,027 INFO L225 Difference]: With dead ends: 23 [2025-01-09 02:54:43,027 INFO L226 Difference]: Without dead ends: 19 [2025-01-09 02:54:43,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:54:43,028 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:43,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-09 02:54:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2025-01-09 02:54:43,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2025-01-09 02:54:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-01-09 02:54:43,033 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 13 [2025-01-09 02:54:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:43,033 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-01-09 02:54:43,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-01-09 02:54:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-01-09 02:54:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-09 02:54:43,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:43,034 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:43,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 02:54:43,034 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:43,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1129010425, now seen corresponding path program 1 times [2025-01-09 02:54:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:43,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187194385] [2025-01-09 02:54:43,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:43,046 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 02:54:43,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 02:54:43,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:43,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 02:54:43,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:43,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187194385] [2025-01-09 02:54:43,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187194385] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:43,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824631092] [2025-01-09 02:54:43,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:43,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:43,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:43,138 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) [2025-01-09 02:54:43,140 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 [2025-01-09 02:54:43,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-09 02:54:43,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-09 02:54:43,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:43,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:43,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 02:54:43,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:43,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:43,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824631092] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:43,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:43,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2025-01-09 02:54:43,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886400921] [2025-01-09 02:54:43,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:43,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 02:54:43,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:43,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 02:54:43,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:54:43,345 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2025-01-09 02:54:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:43,534 INFO L93 Difference]: Finished difference Result 81 states and 108 transitions. [2025-01-09 02:54:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 02:54:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 17 [2025-01-09 02:54:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:43,536 INFO L225 Difference]: With dead ends: 81 [2025-01-09 02:54:43,536 INFO L226 Difference]: Without dead ends: 70 [2025-01-09 02:54:43,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2025-01-09 02:54:43,537 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 84 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:43,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 38 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:54:43,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-01-09 02:54:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2025-01-09 02:54:43,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 58 states have internal predecessors, (69), 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) [2025-01-09 02:54:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2025-01-09 02:54:43,549 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 17 [2025-01-09 02:54:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:43,549 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2025-01-09 02:54:43,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2025-01-09 02:54:43,550 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2025-01-09 02:54:43,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 02:54:43,550 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:43,550 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:43,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 02:54:43,750 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 [2025-01-09 02:54:43,751 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:43,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash 414667255, now seen corresponding path program 1 times [2025-01-09 02:54:43,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:43,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732660691] [2025-01-09 02:54:43,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:43,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:43,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 02:54:43,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 02:54:43,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:43,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-09 02:54:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732660691] [2025-01-09 02:54:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732660691] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319057202] [2025-01-09 02:54:43,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:54:43,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:43,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:43,908 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) [2025-01-09 02:54:43,911 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 [2025-01-09 02:54:43,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 02:54:43,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 02:54:43,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:54:43,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:43,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 02:54:43,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:44,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-09 02:54:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319057202] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:44,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 26 [2025-01-09 02:54:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765604835] [2025-01-09 02:54:44,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:44,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 02:54:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:44,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 02:54:44,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:54:44,384 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-01-09 02:54:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:44,607 INFO L93 Difference]: Finished difference Result 189 states and 245 transitions. [2025-01-09 02:54:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-09 02:54:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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 23 [2025-01-09 02:54:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:44,609 INFO L225 Difference]: With dead ends: 189 [2025-01-09 02:54:44,609 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 02:54:44,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:54:44,610 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 286 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:44,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 91 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:54:44,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 02:54:44,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 76. [2025-01-09 02:54:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 75 states have internal predecessors, (79), 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) [2025-01-09 02:54:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2025-01-09 02:54:44,626 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 23 [2025-01-09 02:54:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:44,626 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2025-01-09 02:54:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 26 states have internal predecessors, (45), 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) [2025-01-09 02:54:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2025-01-09 02:54:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-09 02:54:44,629 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:44,629 INFO L218 NwaCegarLoop]: trace histogram [22, 12, 11, 11, 10, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:44,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 02:54:44,833 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 [2025-01-09 02:54:44,833 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:44,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:44,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1800278785, now seen corresponding path program 2 times [2025-01-09 02:54:44,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:44,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480525142] [2025-01-09 02:54:44,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:44,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:44,866 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 75 statements into 2 equivalence classes. [2025-01-09 02:54:44,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 02:54:44,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:44,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2025-01-09 02:54:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480525142] [2025-01-09 02:54:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480525142] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:54:44,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:54:44,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 02:54:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406956806] [2025-01-09 02:54:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:54:44,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 02:54:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:44,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 02:54:44,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 02:54:44,959 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2025-01-09 02:54:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:44,971 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2025-01-09 02:54:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 02:54:44,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) Word has length 75 [2025-01-09 02:54:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:44,972 INFO L225 Difference]: With dead ends: 86 [2025-01-09 02:54:44,973 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 02:54:44,973 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 [2025-01-09 02:54:44,974 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:44,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:54:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 02:54:44,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2025-01-09 02:54:44,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 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) [2025-01-09 02:54:44,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2025-01-09 02:54:44,983 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 75 [2025-01-09 02:54:44,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:44,984 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2025-01-09 02:54:44,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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) [2025-01-09 02:54:44,984 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2025-01-09 02:54:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-09 02:54:44,985 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:44,985 INFO L218 NwaCegarLoop]: trace histogram [22, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:44,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 02:54:44,986 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:44,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:44,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1120220415, now seen corresponding path program 3 times [2025-01-09 02:54:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:44,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714999052] [2025-01-09 02:54:44,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:44,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:45,011 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 75 statements into 12 equivalence classes. [2025-01-09 02:54:45,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 02:54:45,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:54:45,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:45,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:45,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714999052] [2025-01-09 02:54:45,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714999052] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949845287] [2025-01-09 02:54:45,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:45,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:45,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:45,851 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) [2025-01-09 02:54:45,854 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 [2025-01-09 02:54:45,942 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 75 statements into 12 equivalence classes. [2025-01-09 02:54:47,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 02:54:47,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:54:47,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:47,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:54:47,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 11 proven. 242 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:47,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 11 proven. 242 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:48,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949845287] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:48,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:48,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 15] total 39 [2025-01-09 02:54:48,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707271074] [2025-01-09 02:54:48,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:48,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-09 02:54:48,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:48,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-09 02:54:48,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 02:54:48,042 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 39 states, 39 states have (on average 3.3076923076923075) internal successors, (129), 39 states have internal predecessors, (129), 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) [2025-01-09 02:54:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:48,981 INFO L93 Difference]: Finished difference Result 263 states and 327 transitions. [2025-01-09 02:54:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-09 02:54:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.3076923076923075) internal successors, (129), 39 states have internal predecessors, (129), 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 75 [2025-01-09 02:54:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:48,982 INFO L225 Difference]: With dead ends: 263 [2025-01-09 02:54:48,983 INFO L226 Difference]: Without dead ends: 211 [2025-01-09 02:54:48,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2036, Invalid=3366, Unknown=0, NotChecked=0, Total=5402 [2025-01-09 02:54:48,986 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 151 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:48,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 95 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:54:48,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2025-01-09 02:54:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 185. [2025-01-09 02:54:48,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.141304347826087) internal successors, (210), 184 states have internal predecessors, (210), 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) [2025-01-09 02:54:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions. [2025-01-09 02:54:48,996 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 75 [2025-01-09 02:54:48,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:48,996 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 210 transitions. [2025-01-09 02:54:48,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.3076923076923075) internal successors, (129), 39 states have internal predecessors, (129), 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) [2025-01-09 02:54:48,997 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions. [2025-01-09 02:54:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-01-09 02:54:48,997 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:48,997 INFO L218 NwaCegarLoop]: trace histogram [35, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:49,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 02:54:49,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:49,198 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:49,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash -708167395, now seen corresponding path program 2 times [2025-01-09 02:54:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751765870] [2025-01-09 02:54:49,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:49,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-01-09 02:54:49,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 02:54:49,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:49,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:50,489 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:50,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:50,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751765870] [2025-01-09 02:54:50,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751765870] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:50,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158086753] [2025-01-09 02:54:50,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:54:50,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:50,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:50,492 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) [2025-01-09 02:54:50,495 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 [2025-01-09 02:54:50,579 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 88 statements into 2 equivalence classes. [2025-01-09 02:54:50,642 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 88 of 88 statements. [2025-01-09 02:54:50,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:54:50,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:50,645 INFO L256 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 02:54:50,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:50,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-09 02:54:52,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158086753] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:52,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:52,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 75 [2025-01-09 02:54:52,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954332446] [2025-01-09 02:54:52,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:52,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-01-09 02:54:52,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:52,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-01-09 02:54:52,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2025-01-09 02:54:52,457 INFO L87 Difference]: Start difference. First operand 185 states and 210 transitions. Second operand has 75 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 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) [2025-01-09 02:54:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:53,312 INFO L93 Difference]: Finished difference Result 617 states and 778 transitions. [2025-01-09 02:54:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-01-09 02:54:53,312 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 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 88 [2025-01-09 02:54:53,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:53,314 INFO L225 Difference]: With dead ends: 617 [2025-01-09 02:54:53,314 INFO L226 Difference]: Without dead ends: 470 [2025-01-09 02:54:53,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2025-01-09 02:54:53,316 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 1344 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:53,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 189 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 02:54:53,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2025-01-09 02:54:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 222. [2025-01-09 02:54:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.1176470588235294) internal successors, (247), 221 states have internal predecessors, (247), 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) [2025-01-09 02:54:53,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 247 transitions. [2025-01-09 02:54:53,331 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 247 transitions. Word has length 88 [2025-01-09 02:54:53,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:53,331 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 247 transitions. [2025-01-09 02:54:53,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 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) [2025-01-09 02:54:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 247 transitions. [2025-01-09 02:54:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2025-01-09 02:54:53,332 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:53,332 INFO L218 NwaCegarLoop]: trace histogram [72, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:53,340 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 [2025-01-09 02:54:53,536 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,SelfDestructingSolverStorable8 [2025-01-09 02:54:53,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:53,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash -139474435, now seen corresponding path program 3 times [2025-01-09 02:54:53,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:53,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48320422] [2025-01-09 02:54:53,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:53,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 37 equivalence classes. [2025-01-09 02:54:53,640 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 75 of 125 statements. [2025-01-09 02:54:53,640 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:54:53,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:53,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2025-01-09 02:54:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48320422] [2025-01-09 02:54:53,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48320422] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067741922] [2025-01-09 02:54:53,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:54:53,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:53,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:53,969 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) [2025-01-09 02:54:53,971 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 [2025-01-09 02:54:54,094 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 125 statements into 37 equivalence classes. [2025-01-09 02:54:55,210 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 75 of 125 statements. [2025-01-09 02:54:55,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:54:55,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:55,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 02:54:55,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2025-01-09 02:54:55,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:54:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2881 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2025-01-09 02:54:55,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067741922] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:54:55,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:54:55,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2025-01-09 02:54:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430327812] [2025-01-09 02:54:55,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:54:55,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 02:54:55,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:54:55,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 02:54:55,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:54:55,564 INFO L87 Difference]: Start difference. First operand 222 states and 247 transitions. Second operand has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 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) [2025-01-09 02:54:55,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:54:55,708 INFO L93 Difference]: Finished difference Result 238 states and 262 transitions. [2025-01-09 02:54:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 02:54:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 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 125 [2025-01-09 02:54:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:54:55,710 INFO L225 Difference]: With dead ends: 238 [2025-01-09 02:54:55,710 INFO L226 Difference]: Without dead ends: 222 [2025-01-09 02:54:55,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:54:55,711 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 27 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:54:55,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 83 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:54:55,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2025-01-09 02:54:55,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2025-01-09 02:54:55,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.0588235294117647) internal successors, (234), 221 states have internal predecessors, (234), 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) [2025-01-09 02:54:55,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 234 transitions. [2025-01-09 02:54:55,721 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 234 transitions. Word has length 125 [2025-01-09 02:54:55,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:54:55,722 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 234 transitions. [2025-01-09 02:54:55,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 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) [2025-01-09 02:54:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 234 transitions. [2025-01-09 02:54:55,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-01-09 02:54:55,724 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:54:55,724 INFO L218 NwaCegarLoop]: trace histogram [72, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:54:55,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 02:54:55,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:55,928 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:54:55,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:54:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash -243510280, now seen corresponding path program 4 times [2025-01-09 02:54:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:54:55,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733940245] [2025-01-09 02:54:55,929 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:54:55,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:54:55,970 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 177 statements into 2 equivalence classes. [2025-01-09 02:54:56,004 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 02:54:56,005 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:54:56,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3804 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 2628 trivial. 0 not checked. [2025-01-09 02:54:57,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:54:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733940245] [2025-01-09 02:54:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733940245] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:54:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245333106] [2025-01-09 02:54:57,093 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:54:57,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:54:57,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:54:57,095 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) [2025-01-09 02:54:57,096 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 [2025-01-09 02:54:57,251 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 177 statements into 2 equivalence classes. [2025-01-09 02:54:57,345 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 177 of 177 statements. [2025-01-09 02:54:57,346 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:54:57,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:54:57,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-01-09 02:54:57,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:54:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3804 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2025-01-09 02:54:58,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:03,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3804 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 1176 trivial. 0 not checked. [2025-01-09 02:55:03,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245333106] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:03,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:03,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 75, 75] total 149 [2025-01-09 02:55:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11480258] [2025-01-09 02:55:03,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:03,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2025-01-09 02:55:03,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:03,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2025-01-09 02:55:03,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2025-01-09 02:55:03,977 INFO L87 Difference]: Start difference. First operand 222 states and 234 transitions. Second operand has 149 states, 149 states have (on average 1.7516778523489933) internal successors, (261), 149 states have internal predecessors, (261), 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) [2025-01-09 02:55:11,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:11,142 INFO L93 Difference]: Finished difference Result 1123 states and 1443 transitions. [2025-01-09 02:55:11,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2025-01-09 02:55:11,143 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 1.7516778523489933) internal successors, (261), 149 states have internal predecessors, (261), 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 177 [2025-01-09 02:55:11,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:11,148 INFO L225 Difference]: With dead ends: 1123 [2025-01-09 02:55:11,148 INFO L226 Difference]: Without dead ends: 888 [2025-01-09 02:55:11,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10880, Invalid=11172, Unknown=0, NotChecked=0, Total=22052 [2025-01-09 02:55:11,156 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 2918 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2918 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:11,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2918 Valid, 408 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 02:55:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2025-01-09 02:55:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 449. [2025-01-09 02:55:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.0066964285714286) internal successors, (451), 448 states have internal predecessors, (451), 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) [2025-01-09 02:55:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 451 transitions. [2025-01-09 02:55:11,175 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 451 transitions. Word has length 177 [2025-01-09 02:55:11,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:11,175 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 451 transitions. [2025-01-09 02:55:11,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 1.7516778523489933) internal successors, (261), 149 states have internal predecessors, (261), 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) [2025-01-09 02:55:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 451 transitions. [2025-01-09 02:55:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2025-01-09 02:55:11,184 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:11,185 INFO L218 NwaCegarLoop]: trace histogram [146, 74, 73, 73, 73, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:11,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 02:55:11,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:11,386 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:11,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash -45233679, now seen corresponding path program 4 times [2025-01-09 02:55:11,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:11,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870579244] [2025-01-09 02:55:11,386 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:55:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:11,461 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 447 statements into 2 equivalence classes. [2025-01-09 02:55:11,522 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 447 of 447 statements. [2025-01-09 02:55:11,523 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:55:11,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 73 proven. 10658 refuted. 0 times theorem prover too weak. 10731 trivial. 0 not checked. [2025-01-09 02:55:16,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870579244] [2025-01-09 02:55:16,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870579244] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:16,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391930793] [2025-01-09 02:55:16,995 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:55:16,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:16,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:16,996 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) [2025-01-09 02:55:16,997 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 [2025-01-09 02:55:17,250 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 447 statements into 2 equivalence classes. [2025-01-09 02:55:17,426 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 447 of 447 statements. [2025-01-09 02:55:17,426 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:55:17,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:17,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 76 conjuncts are in the unsatisfiable core [2025-01-09 02:55:17,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:55:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 73 proven. 10658 refuted. 0 times theorem prover too weak. 10731 trivial. 0 not checked. [2025-01-09 02:55:17,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:55:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 21462 backedges. 73 proven. 10658 refuted. 0 times theorem prover too weak. 10731 trivial. 0 not checked. [2025-01-09 02:55:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391930793] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:55:23,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:55:23,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 151 [2025-01-09 02:55:23,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356753298] [2025-01-09 02:55:23,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:55:23,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2025-01-09 02:55:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:55:23,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2025-01-09 02:55:23,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11177, Invalid=11473, Unknown=0, NotChecked=0, Total=22650 [2025-01-09 02:55:23,093 INFO L87 Difference]: Start difference. First operand 449 states and 451 transitions. Second operand has 151 states, 151 states have (on average 3.947019867549669) internal successors, (596), 151 states have internal predecessors, (596), 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) [2025-01-09 02:55:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:55:31,958 INFO L93 Difference]: Finished difference Result 1127 states and 1282 transitions. [2025-01-09 02:55:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2025-01-09 02:55:31,959 INFO L78 Accepts]: Start accepts. Automaton has has 151 states, 151 states have (on average 3.947019867549669) internal successors, (596), 151 states have internal predecessors, (596), 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 447 [2025-01-09 02:55:31,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:55:31,962 INFO L225 Difference]: With dead ends: 1127 [2025-01-09 02:55:31,963 INFO L226 Difference]: Without dead ends: 827 [2025-01-09 02:55:31,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1117 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13579 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=33525, Invalid=55577, Unknown=0, NotChecked=0, Total=89102 [2025-01-09 02:55:31,971 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 339 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 02:55:31,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 257 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 02:55:31,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2025-01-09 02:55:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 750. [2025-01-09 02:55:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 1.102803738317757) internal successors, (826), 749 states have internal predecessors, (826), 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) [2025-01-09 02:55:31,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 826 transitions. [2025-01-09 02:55:31,991 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 826 transitions. Word has length 447 [2025-01-09 02:55:31,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:55:31,992 INFO L471 AbstractCegarLoop]: Abstraction has 750 states and 826 transitions. [2025-01-09 02:55:31,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 151 states, 151 states have (on average 3.947019867549669) internal successors, (596), 151 states have internal predecessors, (596), 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) [2025-01-09 02:55:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 826 transitions. [2025-01-09 02:55:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2025-01-09 02:55:31,999 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:55:31,999 INFO L218 NwaCegarLoop]: trace histogram [148, 74, 74, 73, 73, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:55:32,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 02:55:32,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:32,200 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:55:32,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:55:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1566113519, now seen corresponding path program 5 times [2025-01-09 02:55:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:55:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636155920] [2025-01-09 02:55:32,201 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:55:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:55:32,278 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 449 statements into 75 equivalence classes. [2025-01-09 02:55:34,677 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 75 check-sat command(s) and asserted 449 of 449 statements. [2025-01-09 02:55:34,677 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 75 check-sat command(s) [2025-01-09 02:55:34,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:55:46,443 INFO L134 CoverageAnalysis]: Checked inductivity of 21757 backedges. 0 proven. 11026 refuted. 0 times theorem prover too weak. 10731 trivial. 0 not checked. [2025-01-09 02:55:46,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:55:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636155920] [2025-01-09 02:55:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636155920] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:55:46,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049208453] [2025-01-09 02:55:46,444 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:55:46,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:55:46,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:55:46,446 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) [2025-01-09 02:55:46,448 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 [2025-01-09 02:55:46,739 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 449 statements into 75 equivalence classes.