./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.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/hardness-nfm22/hardness_operatoramount_amount250_file-99.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 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:30:46,088 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:30:46,151 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:30:46,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:30:46,155 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:30:46,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:30:46,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:30:46,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:30:46,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:30:46,181 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:30:46,181 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:30:46,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:30:46,182 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:30:46,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:30:46,182 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:30:46,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:30:46,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:30:46,182 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:30:46,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:30:46,183 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:30:46,183 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:30:46,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:30:46,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:30:46,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:30:46,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:30:46,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:30:46,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:30:46,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:30:46,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:30:46,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:30:46,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:30:46,186 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 -> 488e55d188f50c80d73146c130bc528a02bef0b3d213155fb7178728f7b142f2 [2025-01-09 14:30:46,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:30:46,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:30:46,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:30:46,428 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:30:46,428 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:30:46,430 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-01-09 14:30:47,806 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d0823891/65c5a42565f74b0abdf12532e48908c8/FLAGf065ff1a7 [2025-01-09 14:30:48,087 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:30:48,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i [2025-01-09 14:30:48,106 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d0823891/65c5a42565f74b0abdf12532e48908c8/FLAGf065ff1a7 [2025-01-09 14:30:48,120 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5d0823891/65c5a42565f74b0abdf12532e48908c8 [2025-01-09 14:30:48,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:30:48,123 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:30:48,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:30:48,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:30:48,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:30:48,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb9803d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48, skipping insertion in model container [2025-01-09 14:30:48,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,158 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:30:48,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i[916,929] [2025-01-09 14:30:48,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:30:48,410 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:30:48,417 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-99.i[916,929] [2025-01-09 14:30:48,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:30:48,472 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:30:48,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48 WrapperNode [2025-01-09 14:30:48,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:30:48,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:30:48,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:30:48,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:30:48,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,545 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 434 [2025-01-09 14:30:48,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:30:48,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:30:48,546 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:30:48,546 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:30:48,553 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,600 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 14:30:48,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,623 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:30:48,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:30:48,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:30:48,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:30:48,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (1/1) ... [2025-01-09 14:30:48,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:30:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:30:48,693 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 14:30:48,704 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 14:30:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:30:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:30:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:30:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:30:48,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:30:48,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:30:48,830 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:30:48,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:30:49,527 INFO L? ?]: Removed 40 outVars from TransFormulas that were not future-live. [2025-01-09 14:30:49,528 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:30:49,539 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:30:49,540 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:30:49,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:30:49 BoogieIcfgContainer [2025-01-09 14:30:49,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:30:49,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:30:49,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:30:49,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:30:49,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:30:48" (1/3) ... [2025-01-09 14:30:49,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd9e2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:30:49, skipping insertion in model container [2025-01-09 14:30:49,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:30:48" (2/3) ... [2025-01-09 14:30:49,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dd9e2f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:30:49, skipping insertion in model container [2025-01-09 14:30:49,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:30:49" (3/3) ... [2025-01-09 14:30:49,548 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-99.i [2025-01-09 14:30:49,557 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:30:49,560 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-99.i that has 2 procedures, 188 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:30:49,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:30:49,614 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;@f1d88e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:30:49,615 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:30:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-01-09 14:30:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2025-01-09 14:30:49,632 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:49,633 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:49,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:49,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash -120744982, now seen corresponding path program 1 times [2025-01-09 14:30:49,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:49,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232235394] [2025-01-09 14:30:49,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:49,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:49,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-01-09 14:30:49,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-01-09 14:30:49,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:49,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-01-09 14:30:50,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232235394] [2025-01-09 14:30:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232235394] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:30:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692273107] [2025-01-09 14:30:50,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:50,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:30:50,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:30:50,076 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 14:30:50,077 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 14:30:50,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-01-09 14:30:50,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-01-09 14:30:50,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:50,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:50,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:30:50,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:30:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 6728 trivial. 0 not checked. [2025-01-09 14:30:50,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:30:50,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692273107] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:30:50,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:30:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:30:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528051734] [2025-01-09 14:30:50,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:30:50,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:30:50,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:50,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:30:50,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:30:50,354 INFO L87 Difference]: Start difference. First operand has 188 states, 126 states have (on average 1.4761904761904763) internal successors, (186), 127 states have internal predecessors, (186), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-01-09 14:30:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:30:50,384 INFO L93 Difference]: Finished difference Result 370 states and 662 transitions. [2025-01-09 14:30:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:30:50,385 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) Word has length 378 [2025-01-09 14:30:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:30:50,390 INFO L225 Difference]: With dead ends: 370 [2025-01-09 14:30:50,390 INFO L226 Difference]: Without dead ends: 185 [2025-01-09 14:30:50,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:30:50,395 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:30:50,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:30:50,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-01-09 14:30:50,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2025-01-09 14:30:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.4516129032258065) internal successors, (180), 124 states have internal predecessors, (180), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-01-09 14:30:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 298 transitions. [2025-01-09 14:30:50,436 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 298 transitions. Word has length 378 [2025-01-09 14:30:50,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:30:50,436 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 298 transitions. [2025-01-09 14:30:50,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.0) internal successors, (88), 2 states have internal predecessors, (88), 2 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 2 states have call successors, (59) [2025-01-09 14:30:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 298 transitions. [2025-01-09 14:30:50,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2025-01-09 14:30:50,457 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:50,457 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:50,467 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 14:30:50,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 14:30:50,659 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:50,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:50,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1906047744, now seen corresponding path program 1 times [2025-01-09 14:30:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919377217] [2025-01-09 14:30:50,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:50,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:50,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 378 statements into 1 equivalence classes. [2025-01-09 14:30:50,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 378 of 378 statements. [2025-01-09 14:30:50,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:50,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:30:51,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:51,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919377217] [2025-01-09 14:30:51,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919377217] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:30:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:30:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:30:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355093808] [2025-01-09 14:30:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:30:51,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:30:51,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:51,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:30:51,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:30:51,053 INFO L87 Difference]: Start difference. First operand 185 states and 298 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:30:51,220 INFO L93 Difference]: Finished difference Result 543 states and 877 transitions. [2025-01-09 14:30:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:30:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 378 [2025-01-09 14:30:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:30:51,228 INFO L225 Difference]: With dead ends: 543 [2025-01-09 14:30:51,228 INFO L226 Difference]: Without dead ends: 361 [2025-01-09 14:30:51,229 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 14:30:51,231 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 270 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:30:51,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 736 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:30:51,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-01-09 14:30:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 233. [2025-01-09 14:30:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 172 states have (on average 1.505813953488372) internal successors, (259), 172 states have internal predecessors, (259), 59 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2025-01-09 14:30:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 377 transitions. [2025-01-09 14:30:51,275 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 377 transitions. Word has length 378 [2025-01-09 14:30:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:30:51,277 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 377 transitions. [2025-01-09 14:30:51,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 377 transitions. [2025-01-09 14:30:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-01-09 14:30:51,284 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:51,284 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:51,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:30:51,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:51,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 275185816, now seen corresponding path program 1 times [2025-01-09 14:30:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847029181] [2025-01-09 14:30:51,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:51,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:51,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 379 statements into 1 equivalence classes. [2025-01-09 14:30:51,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 379 of 379 statements. [2025-01-09 14:30:51,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:51,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:51,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:30:51,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:51,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847029181] [2025-01-09 14:30:51,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847029181] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:30:51,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:30:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:30:51,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085622598] [2025-01-09 14:30:51,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:30:51,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:30:51,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:51,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:30:51,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:30:51,940 INFO L87 Difference]: Start difference. First operand 233 states and 377 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:30:52,014 INFO L93 Difference]: Finished difference Result 689 states and 1117 transitions. [2025-01-09 14:30:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:30:52,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 379 [2025-01-09 14:30:52,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:30:52,021 INFO L225 Difference]: With dead ends: 689 [2025-01-09 14:30:52,023 INFO L226 Difference]: Without dead ends: 459 [2025-01-09 14:30:52,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:30:52,025 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 166 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:30:52,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 576 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:30:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2025-01-09 14:30:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 455. [2025-01-09 14:30:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 334 states have (on average 1.4970059880239521) internal successors, (500), 334 states have internal predecessors, (500), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 118 states have call predecessors, (118), 118 states have call successors, (118) [2025-01-09 14:30:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 736 transitions. [2025-01-09 14:30:52,088 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 736 transitions. Word has length 379 [2025-01-09 14:30:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:30:52,089 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 736 transitions. [2025-01-09 14:30:52,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 736 transitions. [2025-01-09 14:30:52,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-01-09 14:30:52,093 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:52,093 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:52,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:30:52,093 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:52,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:52,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1076110240, now seen corresponding path program 1 times [2025-01-09 14:30:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:52,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083864816] [2025-01-09 14:30:52,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:52,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:52,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-01-09 14:30:52,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-01-09 14:30:52,337 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:52,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:30:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083864816] [2025-01-09 14:30:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083864816] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:30:53,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:30:53,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 14:30:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312880570] [2025-01-09 14:30:53,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:30:53,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:30:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:53,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:30:53,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:30:53,766 INFO L87 Difference]: Start difference. First operand 455 states and 736 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:54,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:30:54,283 INFO L93 Difference]: Finished difference Result 1447 states and 2328 transitions. [2025-01-09 14:30:54,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:30:54,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 380 [2025-01-09 14:30:54,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:30:54,294 INFO L225 Difference]: With dead ends: 1447 [2025-01-09 14:30:54,294 INFO L226 Difference]: Without dead ends: 995 [2025-01-09 14:30:54,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-09 14:30:54,297 INFO L435 NwaCegarLoop]: 313 mSDtfsCounter, 353 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:30:54,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1210 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:30:54,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2025-01-09 14:30:54,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 767. [2025-01-09 14:30:54,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 640 states have (on average 1.565625) internal successors, (1002), 642 states have internal predecessors, (1002), 122 states have call successors, (122), 4 states have call predecessors, (122), 4 states have return successors, (122), 120 states have call predecessors, (122), 122 states have call successors, (122) [2025-01-09 14:30:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1246 transitions. [2025-01-09 14:30:54,364 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1246 transitions. Word has length 380 [2025-01-09 14:30:54,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:30:54,366 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 1246 transitions. [2025-01-09 14:30:54,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:30:54,366 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1246 transitions. [2025-01-09 14:30:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2025-01-09 14:30:54,371 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:30:54,371 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:30:54,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:30:54,372 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:30:54,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:30:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash 310093154, now seen corresponding path program 1 times [2025-01-09 14:30:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:30:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773588759] [2025-01-09 14:30:54,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:30:54,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-01-09 14:30:54,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-01-09 14:30:54,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:54,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:55,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:30:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:30:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773588759] [2025-01-09 14:30:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773588759] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:30:55,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719397916] [2025-01-09 14:30:55,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:30:55,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:30:55,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:30:55,298 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 14:30:55,301 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 14:30:55,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 380 statements into 1 equivalence classes. [2025-01-09 14:30:55,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 380 of 380 statements. [2025-01-09 14:30:55,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:30:55,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:30:55,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 14:30:55,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:30:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 1410 proven. 18 refuted. 0 times theorem prover too weak. 5416 trivial. 0 not checked. [2025-01-09 14:30:56,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:30:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 156 proven. 18 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:30:57,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719397916] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:30:57,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:30:57,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2025-01-09 14:30:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025189821] [2025-01-09 14:30:57,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:30:57,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 14:30:57,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:30:57,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 14:30:57,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2025-01-09 14:30:57,760 INFO L87 Difference]: Start difference. First operand 767 states and 1246 transitions. Second operand has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-01-09 14:31:01,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:01,648 INFO L93 Difference]: Finished difference Result 2309 states and 3658 transitions. [2025-01-09 14:31:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-01-09 14:31:01,649 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 380 [2025-01-09 14:31:01,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:01,660 INFO L225 Difference]: With dead ends: 2309 [2025-01-09 14:31:01,660 INFO L226 Difference]: Without dead ends: 1545 [2025-01-09 14:31:01,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 831 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1042, Invalid=4810, Unknown=0, NotChecked=0, Total=5852 [2025-01-09 14:31:01,665 INFO L435 NwaCegarLoop]: 610 mSDtfsCounter, 1621 mSDsluCounter, 4231 mSDsCounter, 0 mSdLazyCounter, 4073 mSolverCounterSat, 959 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 4841 SdHoareTripleChecker+Invalid, 5032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 959 IncrementalHoareTripleChecker+Valid, 4073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:01,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 4841 Invalid, 5032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [959 Valid, 4073 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-01-09 14:31:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2025-01-09 14:31:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 872. [2025-01-09 14:31:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 679 states have (on average 1.4477172312223858) internal successors, (983), 682 states have internal predecessors, (983), 181 states have call successors, (181), 11 states have call predecessors, (181), 11 states have return successors, (181), 178 states have call predecessors, (181), 181 states have call successors, (181) [2025-01-09 14:31:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1345 transitions. [2025-01-09 14:31:01,769 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1345 transitions. Word has length 380 [2025-01-09 14:31:01,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:01,770 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1345 transitions. [2025-01-09 14:31:01,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.263157894736842) internal successors, (233), 19 states have internal predecessors, (233), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-01-09 14:31:01,770 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1345 transitions. [2025-01-09 14:31:01,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2025-01-09 14:31:01,777 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:01,778 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:01,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 14:31:01,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:01,979 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:01,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash -611275475, now seen corresponding path program 1 times [2025-01-09 14:31:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:01,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746074233] [2025-01-09 14:31:01,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:02,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 381 statements into 1 equivalence classes. [2025-01-09 14:31:02,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 381 of 381 statements. [2025-01-09 14:31:02,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:02,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:02,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:31:02,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:02,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746074233] [2025-01-09 14:31:02,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746074233] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:31:02,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:31:02,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:31:02,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262309785] [2025-01-09 14:31:02,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:31:02,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:31:02,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:02,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:31:02,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:31:02,253 INFO L87 Difference]: Start difference. First operand 872 states and 1345 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:02,357 INFO L93 Difference]: Finished difference Result 1977 states and 3050 transitions. [2025-01-09 14:31:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:31:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 381 [2025-01-09 14:31:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:02,364 INFO L225 Difference]: With dead ends: 1977 [2025-01-09 14:31:02,364 INFO L226 Difference]: Without dead ends: 1337 [2025-01-09 14:31:02,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:31:02,365 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 158 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:02,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 654 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:31:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2025-01-09 14:31:02,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1335. [2025-01-09 14:31:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1013 states have (on average 1.4106614017769004) internal successors, (1429), 1019 states have internal predecessors, (1429), 303 states have call successors, (303), 18 states have call predecessors, (303), 18 states have return successors, (303), 297 states have call predecessors, (303), 303 states have call successors, (303) [2025-01-09 14:31:02,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 2035 transitions. [2025-01-09 14:31:02,474 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 2035 transitions. Word has length 381 [2025-01-09 14:31:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:02,476 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 2035 transitions. [2025-01-09 14:31:02,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 2035 transitions. [2025-01-09 14:31:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-01-09 14:31:02,480 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:02,480 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:02,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 14:31:02,480 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:02,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash 477659063, now seen corresponding path program 1 times [2025-01-09 14:31:02,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:02,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267069638] [2025-01-09 14:31:02,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:02,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:02,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-01-09 14:31:02,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-01-09 14:31:02,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:02,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:02,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:31:02,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:02,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267069638] [2025-01-09 14:31:02,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267069638] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:31:02,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:31:02,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:31:02,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093428528] [2025-01-09 14:31:02,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:31:02,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:31:02,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:02,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:31:02,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:31:02,925 INFO L87 Difference]: Start difference. First operand 1335 states and 2035 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:03,400 INFO L93 Difference]: Finished difference Result 3079 states and 4685 transitions. [2025-01-09 14:31:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:31:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 383 [2025-01-09 14:31:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:03,417 INFO L225 Difference]: With dead ends: 3079 [2025-01-09 14:31:03,417 INFO L226 Difference]: Without dead ends: 2448 [2025-01-09 14:31:03,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:31:03,420 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 372 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:03,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 659 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:31:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2025-01-09 14:31:03,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2272. [2025-01-09 14:31:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 1845 states have (on average 1.4368563685636857) internal successors, (2651), 1859 states have internal predecessors, (2651), 399 states have call successors, (399), 27 states have call predecessors, (399), 27 states have return successors, (399), 385 states have call predecessors, (399), 399 states have call successors, (399) [2025-01-09 14:31:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3449 transitions. [2025-01-09 14:31:03,578 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3449 transitions. Word has length 383 [2025-01-09 14:31:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:03,578 INFO L471 AbstractCegarLoop]: Abstraction has 2272 states and 3449 transitions. [2025-01-09 14:31:03,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3449 transitions. [2025-01-09 14:31:03,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2025-01-09 14:31:03,584 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:03,584 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:03,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:31:03,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:03,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:03,585 INFO L85 PathProgramCache]: Analyzing trace with hash 418670154, now seen corresponding path program 1 times [2025-01-09 14:31:03,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:03,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092998924] [2025-01-09 14:31:03,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:03,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-01-09 14:31:04,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-01-09 14:31:04,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:04,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 75 proven. 99 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:04,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092998924] [2025-01-09 14:31:04,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092998924] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:04,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839772200] [2025-01-09 14:31:04,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:04,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:04,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:04,271 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 14:31:04,272 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 14:31:04,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 383 statements into 1 equivalence classes. [2025-01-09 14:31:04,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 383 of 383 statements. [2025-01-09 14:31:04,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:04,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:04,473 INFO L256 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 14:31:04,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:04,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3174 proven. 60 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2025-01-09 14:31:04,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839772200] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:04,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2025-01-09 14:31:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013515087] [2025-01-09 14:31:04,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:04,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 14:31:04,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:04,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 14:31:04,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-01-09 14:31:04,986 INFO L87 Difference]: Start difference. First operand 2272 states and 3449 transitions. Second operand has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 4 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2025-01-09 14:31:06,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:06,462 INFO L93 Difference]: Finished difference Result 4886 states and 7347 transitions. [2025-01-09 14:31:06,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 14:31:06,463 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 4 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) Word has length 383 [2025-01-09 14:31:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:06,476 INFO L225 Difference]: With dead ends: 4886 [2025-01-09 14:31:06,477 INFO L226 Difference]: Without dead ends: 2976 [2025-01-09 14:31:06,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 763 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=439, Invalid=1283, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 14:31:06,481 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 840 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:06,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1184 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 14:31:06,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2025-01-09 14:31:06,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 2654. [2025-01-09 14:31:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 1901 states have (on average 1.3461336138874276) internal successors, (2559), 1915 states have internal predecessors, (2559), 695 states have call successors, (695), 57 states have call predecessors, (695), 57 states have return successors, (695), 681 states have call predecessors, (695), 695 states have call successors, (695) [2025-01-09 14:31:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3949 transitions. [2025-01-09 14:31:06,664 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3949 transitions. Word has length 383 [2025-01-09 14:31:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:06,665 INFO L471 AbstractCegarLoop]: Abstraction has 2654 states and 3949 transitions. [2025-01-09 14:31:06,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.545454545454547) internal successors, (204), 11 states have internal predecessors, (204), 4 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (114), 4 states have call predecessors, (114), 4 states have call successors, (114) [2025-01-09 14:31:06,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3949 transitions. [2025-01-09 14:31:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2025-01-09 14:31:06,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:06,668 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:06,681 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 14:31:06,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:06,872 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:06,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:06,873 INFO L85 PathProgramCache]: Analyzing trace with hash 946393252, now seen corresponding path program 1 times [2025-01-09 14:31:06,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:06,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044831110] [2025-01-09 14:31:06,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:06,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:06,891 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 385 statements into 1 equivalence classes. [2025-01-09 14:31:06,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 385 of 385 statements. [2025-01-09 14:31:06,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:06,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:31:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044831110] [2025-01-09 14:31:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044831110] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:31:07,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:31:07,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:31:07,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501791489] [2025-01-09 14:31:07,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:31:07,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:31:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:07,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:31:07,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:31:07,469 INFO L87 Difference]: Start difference. First operand 2654 states and 3949 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:07,942 INFO L93 Difference]: Finished difference Result 4239 states and 6320 transitions. [2025-01-09 14:31:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:31:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 385 [2025-01-09 14:31:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:07,956 INFO L225 Difference]: With dead ends: 4239 [2025-01-09 14:31:07,956 INFO L226 Difference]: Without dead ends: 2910 [2025-01-09 14:31:07,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:31:07,963 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 321 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:07,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 908 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:31:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2025-01-09 14:31:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2654. [2025-01-09 14:31:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 1901 states have (on average 1.3440294581799053) internal successors, (2555), 1915 states have internal predecessors, (2555), 695 states have call successors, (695), 57 states have call predecessors, (695), 57 states have return successors, (695), 681 states have call predecessors, (695), 695 states have call successors, (695) [2025-01-09 14:31:08,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3945 transitions. [2025-01-09 14:31:08,191 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3945 transitions. Word has length 385 [2025-01-09 14:31:08,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:08,192 INFO L471 AbstractCegarLoop]: Abstraction has 2654 states and 3945 transitions. [2025-01-09 14:31:08,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3945 transitions. [2025-01-09 14:31:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:08,194 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:08,194 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:08,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 14:31:08,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:08,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:08,195 INFO L85 PathProgramCache]: Analyzing trace with hash -17358498, now seen corresponding path program 1 times [2025-01-09 14:31:08,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:08,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372291184] [2025-01-09 14:31:08,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:08,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:08,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:08,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:08,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:08,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6844 trivial. 0 not checked. [2025-01-09 14:31:08,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:08,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372291184] [2025-01-09 14:31:08,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372291184] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:31:08,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:31:08,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 14:31:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486753749] [2025-01-09 14:31:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:31:08,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 14:31:08,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:08,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 14:31:08,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 14:31:08,809 INFO L87 Difference]: Start difference. First operand 2654 states and 3945 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:09,419 INFO L93 Difference]: Finished difference Result 7248 states and 10563 transitions. [2025-01-09 14:31:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:31:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) Word has length 386 [2025-01-09 14:31:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:09,440 INFO L225 Difference]: With dead ends: 7248 [2025-01-09 14:31:09,440 INFO L226 Difference]: Without dead ends: 4916 [2025-01-09 14:31:09,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-01-09 14:31:09,448 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 215 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:09,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1541 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 14:31:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2025-01-09 14:31:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4006. [2025-01-09 14:31:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4006 states, 3116 states have (on average 1.3562259306803595) internal successors, (4226), 3162 states have internal predecessors, (4226), 791 states have call successors, (791), 98 states have call predecessors, (791), 98 states have return successors, (791), 745 states have call predecessors, (791), 791 states have call successors, (791) [2025-01-09 14:31:09,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4006 states to 4006 states and 5808 transitions. [2025-01-09 14:31:09,720 INFO L78 Accepts]: Start accepts. Automaton has 4006 states and 5808 transitions. Word has length 386 [2025-01-09 14:31:09,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:09,721 INFO L471 AbstractCegarLoop]: Abstraction has 4006 states and 5808 transitions. [2025-01-09 14:31:09,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 1 states have call predecessors, (59), 1 states have call successors, (59) [2025-01-09 14:31:09,722 INFO L276 IsEmpty]: Start isEmpty. Operand 4006 states and 5808 transitions. [2025-01-09 14:31:09,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:09,725 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:09,725 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:09,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 14:31:09,725 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:09,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash -89745056, now seen corresponding path program 1 times [2025-01-09 14:31:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:09,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304564384] [2025-01-09 14:31:09,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:09,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:09,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:09,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:09,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 123 proven. 51 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:10,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304564384] [2025-01-09 14:31:10,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304564384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:10,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20322839] [2025-01-09 14:31:10,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:10,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:10,299 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 14:31:10,303 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 14:31:10,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:10,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:10,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:10,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:10,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 14:31:10,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2928 proven. 51 refuted. 0 times theorem prover too weak. 3865 trivial. 0 not checked. [2025-01-09 14:31:11,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 123 proven. 51 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:11,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20322839] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:11,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:11,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2025-01-09 14:31:11,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039646200] [2025-01-09 14:31:11,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:11,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 14:31:11,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:11,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 14:31:11,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2025-01-09 14:31:11,704 INFO L87 Difference]: Start difference. First operand 4006 states and 5808 transitions. Second operand has 14 states, 14 states have (on average 16.357142857142858) internal successors, (229), 14 states have internal predecessors, (229), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-01-09 14:31:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:13,555 INFO L93 Difference]: Finished difference Result 14194 states and 20543 transitions. [2025-01-09 14:31:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 14:31:13,556 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.357142857142858) internal successors, (229), 14 states have internal predecessors, (229), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) Word has length 386 [2025-01-09 14:31:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:13,604 INFO L225 Difference]: With dead ends: 14194 [2025-01-09 14:31:13,605 INFO L226 Difference]: Without dead ends: 12083 [2025-01-09 14:31:13,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2025-01-09 14:31:13,613 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 901 mSDsluCounter, 1732 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:13,614 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1985 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 14:31:13,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12083 states. [2025-01-09 14:31:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12083 to 9105. [2025-01-09 14:31:14,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9105 states, 7119 states have (on average 1.35370136255092) internal successors, (9637), 7236 states have internal predecessors, (9637), 1749 states have call successors, (1749), 236 states have call predecessors, (1749), 236 states have return successors, (1749), 1632 states have call predecessors, (1749), 1749 states have call successors, (1749) [2025-01-09 14:31:14,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9105 states to 9105 states and 13135 transitions. [2025-01-09 14:31:14,492 INFO L78 Accepts]: Start accepts. Automaton has 9105 states and 13135 transitions. Word has length 386 [2025-01-09 14:31:14,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:14,493 INFO L471 AbstractCegarLoop]: Abstraction has 9105 states and 13135 transitions. [2025-01-09 14:31:14,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.357142857142858) internal successors, (229), 14 states have internal predecessors, (229), 6 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 6 states have call predecessors, (177), 6 states have call successors, (177) [2025-01-09 14:31:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 9105 states and 13135 transitions. [2025-01-09 14:31:14,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:14,500 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:14,500 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:14,508 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 14:31:14,701 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,SelfDestructingSolverStorable10 [2025-01-09 14:31:14,701 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:14,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:14,702 INFO L85 PathProgramCache]: Analyzing trace with hash 185014558, now seen corresponding path program 1 times [2025-01-09 14:31:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987103047] [2025-01-09 14:31:14,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:14,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:14,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:14,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:14,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:14,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:15,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 228 proven. 114 refuted. 0 times theorem prover too weak. 6502 trivial. 0 not checked. [2025-01-09 14:31:15,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987103047] [2025-01-09 14:31:15,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987103047] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:15,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927074310] [2025-01-09 14:31:15,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:15,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:15,553 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 14:31:15,554 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 14:31:15,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:15,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:15,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:15,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:15,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 14:31:15,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 4060 proven. 264 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2025-01-09 14:31:16,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:17,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 228 proven. 117 refuted. 0 times theorem prover too weak. 6499 trivial. 0 not checked. [2025-01-09 14:31:17,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927074310] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:17,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:17,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 9] total 25 [2025-01-09 14:31:17,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983376051] [2025-01-09 14:31:17,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:17,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 14:31:17,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:17,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 14:31:17,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2025-01-09 14:31:17,375 INFO L87 Difference]: Start difference. First operand 9105 states and 13135 transitions. Second operand has 25 states, 23 states have (on average 8.956521739130435) internal successors, (206), 21 states have internal predecessors, (206), 9 states have call successors, (107), 5 states have call predecessors, (107), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) [2025-01-09 14:31:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:20,569 INFO L93 Difference]: Finished difference Result 24148 states and 34318 transitions. [2025-01-09 14:31:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2025-01-09 14:31:20,570 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 8.956521739130435) internal successors, (206), 21 states have internal predecessors, (206), 9 states have call successors, (107), 5 states have call predecessors, (107), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) Word has length 386 [2025-01-09 14:31:20,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:20,609 INFO L225 Difference]: With dead ends: 24148 [2025-01-09 14:31:20,609 INFO L226 Difference]: Without dead ends: 15649 [2025-01-09 14:31:20,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2003 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1495, Invalid=4985, Unknown=0, NotChecked=0, Total=6480 [2025-01-09 14:31:20,626 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 1159 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:20,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 2601 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 2172 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 14:31:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15649 states. [2025-01-09 14:31:21,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15649 to 9145. [2025-01-09 14:31:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9145 states, 7195 states have (on average 1.3499652536483668) internal successors, (9713), 7312 states have internal predecessors, (9713), 1669 states have call successors, (1669), 280 states have call predecessors, (1669), 280 states have return successors, (1669), 1552 states have call predecessors, (1669), 1669 states have call successors, (1669) [2025-01-09 14:31:21,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9145 states to 9145 states and 13051 transitions. [2025-01-09 14:31:21,371 INFO L78 Accepts]: Start accepts. Automaton has 9145 states and 13051 transitions. Word has length 386 [2025-01-09 14:31:21,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:21,372 INFO L471 AbstractCegarLoop]: Abstraction has 9145 states and 13051 transitions. [2025-01-09 14:31:21,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 8.956521739130435) internal successors, (206), 21 states have internal predecessors, (206), 9 states have call successors, (107), 5 states have call predecessors, (107), 9 states have return successors, (109), 9 states have call predecessors, (109), 9 states have call successors, (109) [2025-01-09 14:31:21,372 INFO L276 IsEmpty]: Start isEmpty. Operand 9145 states and 13051 transitions. [2025-01-09 14:31:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:21,378 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:21,378 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:21,390 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 14:31:21,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 14:31:21,579 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:21,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2055555701, now seen corresponding path program 1 times [2025-01-09 14:31:21,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:21,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554357133] [2025-01-09 14:31:21,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:21,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:21,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:21,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:21,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:21,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554357133] [2025-01-09 14:31:21,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554357133] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:21,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498588898] [2025-01-09 14:31:21,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:21,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:21,960 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 14:31:21,962 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 14:31:22,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:22,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:22,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:22,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:22,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 14:31:22,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3018 proven. 54 refuted. 0 times theorem prover too weak. 3772 trivial. 0 not checked. [2025-01-09 14:31:22,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 120 proven. 54 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:22,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498588898] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:22,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:22,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 10 [2025-01-09 14:31:22,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556390808] [2025-01-09 14:31:22,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:22,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 14:31:22,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:22,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 14:31:22,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2025-01-09 14:31:22,669 INFO L87 Difference]: Start difference. First operand 9145 states and 13051 transitions. Second operand has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2025-01-09 14:31:23,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:23,908 INFO L93 Difference]: Finished difference Result 18122 states and 25663 transitions. [2025-01-09 14:31:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 14:31:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) Word has length 386 [2025-01-09 14:31:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:23,947 INFO L225 Difference]: With dead ends: 18122 [2025-01-09 14:31:23,947 INFO L226 Difference]: Without dead ends: 9599 [2025-01-09 14:31:23,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 768 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2025-01-09 14:31:23,968 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 301 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:23,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 568 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:31:23,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2025-01-09 14:31:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 9197. [2025-01-09 14:31:24,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9197 states, 7234 states have (on average 1.342272601603539) internal successors, (9710), 7351 states have internal predecessors, (9710), 1669 states have call successors, (1669), 293 states have call predecessors, (1669), 293 states have return successors, (1669), 1552 states have call predecessors, (1669), 1669 states have call successors, (1669) [2025-01-09 14:31:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9197 states to 9197 states and 13048 transitions. [2025-01-09 14:31:24,665 INFO L78 Accepts]: Start accepts. Automaton has 9197 states and 13048 transitions. Word has length 386 [2025-01-09 14:31:24,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:24,665 INFO L471 AbstractCegarLoop]: Abstraction has 9197 states and 13048 transitions. [2025-01-09 14:31:24,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.7) internal successors, (187), 10 states have internal predecessors, (187), 4 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (97), 4 states have call predecessors, (97), 4 states have call successors, (97) [2025-01-09 14:31:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9197 states and 13048 transitions. [2025-01-09 14:31:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:24,670 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:24,671 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:24,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 14:31:24,871 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,SelfDestructingSolverStorable12 [2025-01-09 14:31:24,871 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:24,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:24,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1421763145, now seen corresponding path program 1 times [2025-01-09 14:31:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383369351] [2025-01-09 14:31:24,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:24,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:24,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:25,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:25,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:25,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 612 proven. 48 refuted. 0 times theorem prover too weak. 6184 trivial. 0 not checked. [2025-01-09 14:31:26,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:26,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383369351] [2025-01-09 14:31:26,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383369351] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:26,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496839195] [2025-01-09 14:31:26,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:26,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:26,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:26,162 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 14:31:26,164 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 14:31:26,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:26,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:26,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:26,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:26,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 14:31:26,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3540 proven. 93 refuted. 0 times theorem prover too weak. 3211 trivial. 0 not checked. [2025-01-09 14:31:28,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:30,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496839195] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:30,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 14:31:30,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19] total 29 [2025-01-09 14:31:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920800016] [2025-01-09 14:31:30,389 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:30,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 14:31:30,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:30,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 14:31:30,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2025-01-09 14:31:30,391 INFO L87 Difference]: Start difference. First operand 9197 states and 13048 transitions. Second operand has 29 states, 27 states have (on average 7.333333333333333) internal successors, (198), 25 states have internal predecessors, (198), 11 states have call successors, (118), 7 states have call predecessors, (118), 11 states have return successors, (118), 11 states have call predecessors, (118), 11 states have call successors, (118) [2025-01-09 14:31:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:33,333 INFO L93 Difference]: Finished difference Result 23304 states and 32925 transitions. [2025-01-09 14:31:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 14:31:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 7.333333333333333) internal successors, (198), 25 states have internal predecessors, (198), 11 states have call successors, (118), 7 states have call predecessors, (118), 11 states have return successors, (118), 11 states have call predecessors, (118), 11 states have call successors, (118) Word has length 386 [2025-01-09 14:31:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:33,375 INFO L225 Difference]: With dead ends: 23304 [2025-01-09 14:31:33,376 INFO L226 Difference]: Without dead ends: 14449 [2025-01-09 14:31:33,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 435 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=652, Invalid=2540, Unknown=0, NotChecked=0, Total=3192 [2025-01-09 14:31:33,396 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 2336 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 893 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:33,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 2833 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [893 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 14:31:33,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14449 states. [2025-01-09 14:31:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14449 to 9241. [2025-01-09 14:31:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 7273 states have (on average 1.3419496768871166) internal successors, (9760), 7390 states have internal predecessors, (9760), 1669 states have call successors, (1669), 298 states have call predecessors, (1669), 298 states have return successors, (1669), 1552 states have call predecessors, (1669), 1669 states have call successors, (1669) [2025-01-09 14:31:34,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13098 transitions. [2025-01-09 14:31:34,131 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13098 transitions. Word has length 386 [2025-01-09 14:31:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:34,132 INFO L471 AbstractCegarLoop]: Abstraction has 9241 states and 13098 transitions. [2025-01-09 14:31:34,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 7.333333333333333) internal successors, (198), 25 states have internal predecessors, (198), 11 states have call successors, (118), 7 states have call predecessors, (118), 11 states have return successors, (118), 11 states have call predecessors, (118), 11 states have call successors, (118) [2025-01-09 14:31:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13098 transitions. [2025-01-09 14:31:34,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:34,137 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:34,138 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:34,150 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 14:31:34,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:34,339 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:34,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:34,340 INFO L85 PathProgramCache]: Analyzing trace with hash -367337509, now seen corresponding path program 1 times [2025-01-09 14:31:34,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:34,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109361868] [2025-01-09 14:31:34,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:34,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:34,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:34,494 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:34,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:34,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:35,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109361868] [2025-01-09 14:31:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109361868] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440571846] [2025-01-09 14:31:35,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:35,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:35,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:35,048 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 14:31:35,049 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 14:31:35,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:35,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:35,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:35,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:35,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 14:31:35,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:36,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 568 proven. 330 refuted. 0 times theorem prover too weak. 5946 trivial. 0 not checked. [2025-01-09 14:31:36,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:36,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:36,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440571846] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:36,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:36,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 7] total 17 [2025-01-09 14:31:36,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206432911] [2025-01-09 14:31:36,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:36,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 14:31:36,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:36,862 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 14:31:36,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2025-01-09 14:31:36,862 INFO L87 Difference]: Start difference. First operand 9241 states and 13098 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2025-01-09 14:31:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:39,242 INFO L93 Difference]: Finished difference Result 21772 states and 29865 transitions. [2025-01-09 14:31:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 14:31:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) Word has length 386 [2025-01-09 14:31:39,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:39,278 INFO L225 Difference]: With dead ends: 21772 [2025-01-09 14:31:39,278 INFO L226 Difference]: Without dead ends: 13201 [2025-01-09 14:31:39,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2025-01-09 14:31:39,293 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 873 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:39,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1395 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 14:31:39,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13201 states. [2025-01-09 14:31:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13201 to 8179. [2025-01-09 14:31:39,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8179 states, 6410 states have (on average 1.3489859594383775) internal successors, (8647), 6467 states have internal predecessors, (8647), 1469 states have call successors, (1469), 299 states have call predecessors, (1469), 299 states have return successors, (1469), 1412 states have call predecessors, (1469), 1469 states have call successors, (1469) [2025-01-09 14:31:39,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8179 states to 8179 states and 11585 transitions. [2025-01-09 14:31:39,986 INFO L78 Accepts]: Start accepts. Automaton has 8179 states and 11585 transitions. Word has length 386 [2025-01-09 14:31:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:39,987 INFO L471 AbstractCegarLoop]: Abstraction has 8179 states and 11585 transitions. [2025-01-09 14:31:39,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 4 states have call successors, (171), 3 states have call predecessors, (171), 5 states have return successors, (172), 4 states have call predecessors, (172), 4 states have call successors, (172) [2025-01-09 14:31:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8179 states and 11585 transitions. [2025-01-09 14:31:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:39,991 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:39,992 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:40,000 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 14:31:40,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 14:31:40,193 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:40,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1683646489, now seen corresponding path program 1 times [2025-01-09 14:31:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:40,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711416754] [2025-01-09 14:31:40,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:40,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:40,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:40,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:40,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:31:40,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288295591] [2025-01-09 14:31:40,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:40,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:40,427 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 14:31:40,429 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 14:31:40,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:40,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:40,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:40,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:40,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 14:31:40,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 1392 proven. 318 refuted. 0 times theorem prover too weak. 5134 trivial. 0 not checked. [2025-01-09 14:31:42,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 6 proven. 168 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:42,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711416754] [2025-01-09 14:31:42,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:31:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288295591] [2025-01-09 14:31:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288295591] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:42,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 14:31:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2025-01-09 14:31:42,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718050853] [2025-01-09 14:31:42,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:42,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 14:31:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:42,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 14:31:42,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2025-01-09 14:31:42,936 INFO L87 Difference]: Start difference. First operand 8179 states and 11585 transitions. Second operand has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 5 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) [2025-01-09 14:31:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:31:47,324 INFO L93 Difference]: Finished difference Result 19237 states and 26928 transitions. [2025-01-09 14:31:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 14:31:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 5 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) Word has length 386 [2025-01-09 14:31:47,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:31:47,350 INFO L225 Difference]: With dead ends: 19237 [2025-01-09 14:31:47,350 INFO L226 Difference]: Without dead ends: 14379 [2025-01-09 14:31:47,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 756 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=610, Invalid=1552, Unknown=0, NotChecked=0, Total=2162 [2025-01-09 14:31:47,359 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 1783 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1785 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-09 14:31:47,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1785 Valid, 1760 Invalid, 1892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-09 14:31:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14379 states. [2025-01-09 14:31:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14379 to 9119. [2025-01-09 14:31:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9119 states, 7309 states have (on average 1.360240799014913) internal successors, (9942), 7366 states have internal predecessors, (9942), 1469 states have call successors, (1469), 340 states have call predecessors, (1469), 340 states have return successors, (1469), 1412 states have call predecessors, (1469), 1469 states have call successors, (1469) [2025-01-09 14:31:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9119 states to 9119 states and 12880 transitions. [2025-01-09 14:31:48,032 INFO L78 Accepts]: Start accepts. Automaton has 9119 states and 12880 transitions. Word has length 386 [2025-01-09 14:31:48,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:31:48,033 INFO L471 AbstractCegarLoop]: Abstraction has 9119 states and 12880 transitions. [2025-01-09 14:31:48,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 9.2) internal successors, (184), 20 states have internal predecessors, (184), 5 states have call successors, (115), 3 states have call predecessors, (115), 6 states have return successors, (116), 5 states have call predecessors, (116), 5 states have call successors, (116) [2025-01-09 14:31:48,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9119 states and 12880 transitions. [2025-01-09 14:31:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:31:48,038 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:31:48,038 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:31:48,047 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 14:31:48,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:48,239 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:31:48,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:31:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash -662564591, now seen corresponding path program 1 times [2025-01-09 14:31:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:31:48,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595365943] [2025-01-09 14:31:48,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:31:48,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:48,396 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:48,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:48,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:48,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:31:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595365943] [2025-01-09 14:31:48,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595365943] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:31:48,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675034694] [2025-01-09 14:31:48,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:31:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:31:48,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:31:48,767 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 14:31:48,769 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 14:31:48,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:31:48,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:31:48,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:31:48,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:31:48,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 14:31:49,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:31:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 3174 proven. 60 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2025-01-09 14:31:49,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:31:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 114 proven. 60 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:31:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675034694] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:31:50,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:31:50,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2025-01-09 14:31:50,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81046044] [2025-01-09 14:31:50,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:31:50,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 14:31:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:31:50,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 14:31:50,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2025-01-09 14:31:50,084 INFO L87 Difference]: Start difference. First operand 9119 states and 12880 transitions. Second operand has 22 states, 22 states have (on average 11.181818181818182) internal successors, (246), 22 states have internal predecessors, (246), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) [2025-01-09 14:32:00,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:32:00,067 INFO L93 Difference]: Finished difference Result 59268 states and 81991 transitions. [2025-01-09 14:32:00,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2025-01-09 14:32:00,068 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.181818181818182) internal successors, (246), 22 states have internal predecessors, (246), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) Word has length 386 [2025-01-09 14:32:00,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:32:00,183 INFO L225 Difference]: With dead ends: 59268 [2025-01-09 14:32:00,183 INFO L226 Difference]: Without dead ends: 51115 [2025-01-09 14:32:00,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1604, Invalid=6228, Unknown=0, NotChecked=0, Total=7832 [2025-01-09 14:32:00,206 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 4435 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 4552 mSolverCounterSat, 2989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4493 SdHoareTripleChecker+Valid, 4394 SdHoareTripleChecker+Invalid, 7541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2989 IncrementalHoareTripleChecker+Valid, 4552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:32:00,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4493 Valid, 4394 Invalid, 7541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2989 Valid, 4552 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2025-01-09 14:32:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51115 states. [2025-01-09 14:32:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51115 to 25324. [2025-01-09 14:32:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25324 states, 20008 states have (on average 1.3509096361455417) internal successors, (27029), 20179 states have internal predecessors, (27029), 4319 states have call successors, (4319), 996 states have call predecessors, (4319), 996 states have return successors, (4319), 4148 states have call predecessors, (4319), 4319 states have call successors, (4319) [2025-01-09 14:32:02,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25324 states to 25324 states and 35667 transitions. [2025-01-09 14:32:03,018 INFO L78 Accepts]: Start accepts. Automaton has 25324 states and 35667 transitions. Word has length 386 [2025-01-09 14:32:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:32:03,018 INFO L471 AbstractCegarLoop]: Abstraction has 25324 states and 35667 transitions. [2025-01-09 14:32:03,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.181818181818182) internal successors, (246), 22 states have internal predecessors, (246), 5 states have call successors, (177), 3 states have call predecessors, (177), 6 states have return successors, (177), 5 states have call predecessors, (177), 5 states have call successors, (177) [2025-01-09 14:32:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 25324 states and 35667 transitions. [2025-01-09 14:32:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2025-01-09 14:32:03,026 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:32:03,027 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 14:32:03,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 14:32:03,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-09 14:32:03,228 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:32:03,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:32:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash 38499987, now seen corresponding path program 1 times [2025-01-09 14:32:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:32:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571921037] [2025-01-09 14:32:03,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:32:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:32:03,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:32:03,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:32:03,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:32:03,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:32:03,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144298187] [2025-01-09 14:32:03,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:32:03,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:32:03,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:32:03,471 INFO L229 MonitoredProcess]: Starting monitored process 12 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 14:32:03,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 14:32:03,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 386 statements into 1 equivalence classes. [2025-01-09 14:32:03,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 386 of 386 statements. [2025-01-09 14:32:03,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:32:03,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:32:03,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 14:32:03,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:32:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2656 proven. 294 refuted. 0 times theorem prover too weak. 3894 trivial. 0 not checked. [2025-01-09 14:32:06,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:32:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:32:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571921037] [2025-01-09 14:32:06,261 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:32:06,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144298187] [2025-01-09 14:32:06,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144298187] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:32:06,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:32:06,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2025-01-09 14:32:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893515509] [2025-01-09 14:32:06,261 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:32:06,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 14:32:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:32:06,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 14:32:06,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-01-09 14:32:06,262 INFO L87 Difference]: Start difference. First operand 25324 states and 35667 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 10 states have internal predecessors, (106), 3 states have call successors, (59), 3 states have call predecessors, (59), 5 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59)