./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-19.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_amount500_file-19.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 a3c9443ab2a9a0ac9f8b1a4dfc6a8acea9c43b5adb9d9f2e6268045e7c9cd431 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 14:44:19,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 14:44:19,829 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 14:44:19,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 14:44:19,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 14:44:19,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 14:44:19,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 14:44:19,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 14:44:19,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 14:44:19,858 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 14:44:19,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 14:44:19,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 14:44:19,859 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 14:44:19,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 14:44:19,860 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:44:19,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:44:19,860 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 14:44:19,860 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 14:44:19,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 14:44:19,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 14:44:19,861 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 14:44:19,861 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 -> a3c9443ab2a9a0ac9f8b1a4dfc6a8acea9c43b5adb9d9f2e6268045e7c9cd431 [2025-01-09 14:44:20,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 14:44:20,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 14:44:20,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 14:44:20,076 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 14:44:20,076 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 14:44:20,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-19.i [2025-01-09 14:44:21,245 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d68c00f0/4cb010dd7db74e73a8ed219579f8079d/FLAG631cbaff4 [2025-01-09 14:44:21,545 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 14:44:21,545 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-19.i [2025-01-09 14:44:21,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d68c00f0/4cb010dd7db74e73a8ed219579f8079d/FLAG631cbaff4 [2025-01-09 14:44:21,571 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/4d68c00f0/4cb010dd7db74e73a8ed219579f8079d [2025-01-09 14:44:21,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 14:44:21,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 14:44:21,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 14:44:21,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 14:44:21,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 14:44:21,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:44:21" (1/1) ... [2025-01-09 14:44:21,580 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b739f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:21, skipping insertion in model container [2025-01-09 14:44:21,580 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:44:21" (1/1) ... [2025-01-09 14:44:21,611 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 14:44:21,722 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_amount500_file-19.i[916,929] [2025-01-09 14:44:21,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:44:21,936 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 14:44:21,945 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_amount500_file-19.i[916,929] [2025-01-09 14:44:22,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 14:44:22,062 INFO L204 MainTranslator]: Completed translation [2025-01-09 14:44:22,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22 WrapperNode [2025-01-09 14:44:22,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 14:44:22,063 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 14:44:22,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 14:44:22,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 14:44:22,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,164 INFO L138 Inliner]: procedures = 26, calls = 72, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 709 [2025-01-09 14:44:22,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 14:44:22,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 14:44:22,166 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 14:44:22,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 14:44:22,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,284 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 14:44:22,285 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 14:44:22,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 14:44:22,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 14:44:22,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 14:44:22,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (1/1) ... [2025-01-09 14:44:22,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 14:44:22,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:44:22,378 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 14:44:22,382 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 14:44:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 14:44:22,398 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 14:44:22,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 14:44:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 14:44:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 14:44:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 14:44:22,509 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 14:44:22,510 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 14:44:23,496 INFO L? ?]: Removed 86 outVars from TransFormulas that were not future-live. [2025-01-09 14:44:23,496 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 14:44:23,511 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 14:44:23,513 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 14:44:23,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:44:23 BoogieIcfgContainer [2025-01-09 14:44:23,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 14:44:23,515 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 14:44:23,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 14:44:23,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 14:44:23,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:44:21" (1/3) ... [2025-01-09 14:44:23,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133a3e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:44:23, skipping insertion in model container [2025-01-09 14:44:23,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:44:22" (2/3) ... [2025-01-09 14:44:23,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133a3e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:44:23, skipping insertion in model container [2025-01-09 14:44:23,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:44:23" (3/3) ... [2025-01-09 14:44:23,521 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-19.i [2025-01-09 14:44:23,530 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 14:44:23,533 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-19.i that has 2 procedures, 283 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 14:44:23,582 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 14:44:23,590 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;@213e5d53, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 14:44:23,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 14:44:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 222 states have internal predecessors, (348), 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 14:44:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-01-09 14:44:23,620 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:23,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:23,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:23,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1625335760, now seen corresponding path program 1 times [2025-01-09 14:44:23,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35045192] [2025-01-09 14:44:23,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:23,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-01-09 14:44:23,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-01-09 14:44:23,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:23,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:24,137 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 14:44:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35045192] [2025-01-09 14:44:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35045192] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:44:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430276498] [2025-01-09 14:44:24,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:24,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:44:24,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:44:24,141 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 14:44:24,143 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 14:44:24,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-01-09 14:44:24,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-01-09 14:44:24,439 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:24,439 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:24,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 14:44:24,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:44:24,516 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 14:44:24,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 14:44:24,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430276498] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:24,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:44:24,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 14:44:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139401223] [2025-01-09 14:44:24,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:24,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 14:44:24,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:24,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 14:44:24,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 14:44:24,542 INFO L87 Difference]: Start difference. First operand has 283 states, 221 states have (on average 1.5746606334841629) internal successors, (348), 222 states have internal predecessors, (348), 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 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 14:44:24,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:24,597 INFO L93 Difference]: Finished difference Result 560 states and 986 transitions. [2025-01-09 14:44:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 14:44:24,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 422 [2025-01-09 14:44:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:24,605 INFO L225 Difference]: With dead ends: 560 [2025-01-09 14:44:24,605 INFO L226 Difference]: Without dead ends: 280 [2025-01-09 14:44:24,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 423 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 14:44:24,612 INFO L435 NwaCegarLoop]: 461 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, 461 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 14:44:24,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:44:24,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-01-09 14:44:24,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2025-01-09 14:44:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 219 states have (on average 1.5662100456621004) internal successors, (343), 219 states have internal predecessors, (343), 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 14:44:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 461 transitions. [2025-01-09 14:44:24,670 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 461 transitions. Word has length 422 [2025-01-09 14:44:24,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:24,671 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 461 transitions. [2025-01-09 14:44:24,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 66.0) internal successors, (132), 2 states have internal predecessors, (132), 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 14:44:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 461 transitions. [2025-01-09 14:44:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2025-01-09 14:44:24,681 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:24,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:24,693 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 14:44:24,886 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 14:44:24,886 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:24,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash -452263522, now seen corresponding path program 1 times [2025-01-09 14:44:24,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:24,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502295954] [2025-01-09 14:44:24,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:24,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:24,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 422 statements into 1 equivalence classes. [2025-01-09 14:44:25,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 422 of 422 statements. [2025-01-09 14:44:25,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:25,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:26,061 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 14:44:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502295954] [2025-01-09 14:44:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502295954] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:26,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557198792] [2025-01-09 14:44:26,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:26,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:26,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:26,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:26,066 INFO L87 Difference]: Start difference. First operand 280 states and 461 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 14:44:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:26,342 INFO L93 Difference]: Finished difference Result 874 states and 1443 transitions. [2025-01-09 14:44:26,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:44:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 422 [2025-01-09 14:44:26,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:26,350 INFO L225 Difference]: With dead ends: 874 [2025-01-09 14:44:26,350 INFO L226 Difference]: Without dead ends: 597 [2025-01-09 14:44:26,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:44:26,352 INFO L435 NwaCegarLoop]: 481 mSDtfsCounter, 679 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:26,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1067 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:44:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-01-09 14:44:26,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 565. [2025-01-09 14:44:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 493 states have (on average 1.6267748478701824) internal successors, (802), 494 states have internal predecessors, (802), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2025-01-09 14:44:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 940 transitions. [2025-01-09 14:44:26,389 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 940 transitions. Word has length 422 [2025-01-09 14:44:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:26,390 INFO L471 AbstractCegarLoop]: Abstraction has 565 states and 940 transitions. [2025-01-09 14:44:26,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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 14:44:26,391 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 940 transitions. [2025-01-09 14:44:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:26,397 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:26,398 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:26,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 14:44:26,400 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:26,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash -883377878, now seen corresponding path program 1 times [2025-01-09 14:44:26,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:26,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308948463] [2025-01-09 14:44:26,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:26,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:26,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:26,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:26,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:26,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:26,641 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 14:44:26,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:26,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308948463] [2025-01-09 14:44:26,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308948463] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:26,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:26,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:44:26,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620777042] [2025-01-09 14:44:26,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:26,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:44:26,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:26,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:44:26,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:44:26,644 INFO L87 Difference]: Start difference. First operand 565 states and 940 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 14:44:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:26,745 INFO L93 Difference]: Finished difference Result 1441 states and 2395 transitions. [2025-01-09 14:44:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:44:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 423 [2025-01-09 14:44:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:26,754 INFO L225 Difference]: With dead ends: 1441 [2025-01-09 14:44:26,755 INFO L226 Difference]: Without dead ends: 879 [2025-01-09 14:44:26,756 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 14:44:26,757 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 228 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:26,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 927 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:44:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2025-01-09 14:44:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 794. [2025-01-09 14:44:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 722 states have (on average 1.6426592797783934) internal successors, (1186), 723 states have internal predecessors, (1186), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2025-01-09 14:44:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1324 transitions. [2025-01-09 14:44:26,801 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1324 transitions. Word has length 423 [2025-01-09 14:44:26,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:26,802 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1324 transitions. [2025-01-09 14:44:26,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 14:44:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1324 transitions. [2025-01-09 14:44:26,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:26,809 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:26,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:26,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 14:44:26,809 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:26,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1423892598, now seen corresponding path program 1 times [2025-01-09 14:44:26,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:26,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970191910] [2025-01-09 14:44:26,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:26,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:26,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:26,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:26,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:27,063 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 14:44:27,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970191910] [2025-01-09 14:44:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970191910] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:27,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:27,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 14:44:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310589712] [2025-01-09 14:44:27,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:27,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 14:44:27,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:27,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 14:44:27,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 14:44:27,066 INFO L87 Difference]: Start difference. First operand 794 states and 1324 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 14:44:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:27,112 INFO L93 Difference]: Finished difference Result 1773 states and 2974 transitions. [2025-01-09 14:44:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 14:44:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 423 [2025-01-09 14:44:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:27,117 INFO L225 Difference]: With dead ends: 1773 [2025-01-09 14:44:27,117 INFO L226 Difference]: Without dead ends: 982 [2025-01-09 14:44:27,118 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 14:44:27,119 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 71 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:27,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 902 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:44:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2025-01-09 14:44:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 794. [2025-01-09 14:44:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 722 states have (on average 1.6357340720221607) internal successors, (1181), 723 states have internal predecessors, (1181), 69 states have call successors, (69), 2 states have call predecessors, (69), 2 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2025-01-09 14:44:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1319 transitions. [2025-01-09 14:44:27,159 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1319 transitions. Word has length 423 [2025-01-09 14:44:27,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:27,160 INFO L471 AbstractCegarLoop]: Abstraction has 794 states and 1319 transitions. [2025-01-09 14:44:27,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 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 14:44:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1319 transitions. [2025-01-09 14:44:27,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:27,167 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:27,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:27,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 14:44:27,168 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:27,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:27,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1866714877, now seen corresponding path program 1 times [2025-01-09 14:44:27,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843704018] [2025-01-09 14:44:27,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:27,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:27,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:27,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:27,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:27,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:30,113 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 14:44:30,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:30,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843704018] [2025-01-09 14:44:30,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843704018] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:30,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:30,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-01-09 14:44:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190922153] [2025-01-09 14:44:30,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:30,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 14:44:30,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:30,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 14:44:30,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-01-09 14:44:30,116 INFO L87 Difference]: Start difference. First operand 794 states and 1319 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-01-09 14:44:31,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:31,438 INFO L93 Difference]: Finished difference Result 3212 states and 5320 transitions. [2025-01-09 14:44:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 14:44:31,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 423 [2025-01-09 14:44:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:31,450 INFO L225 Difference]: With dead ends: 3212 [2025-01-09 14:44:31,450 INFO L226 Difference]: Without dead ends: 2421 [2025-01-09 14:44:31,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-01-09 14:44:31,452 INFO L435 NwaCegarLoop]: 549 mSDtfsCounter, 1708 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:31,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 1950 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-09 14:44:31,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2421 states. [2025-01-09 14:44:31,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2421 to 2249. [2025-01-09 14:44:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2249 states, 2100 states have (on average 1.651904761904762) internal successors, (3469), 2104 states have internal predecessors, (3469), 142 states have call successors, (142), 6 states have call predecessors, (142), 6 states have return successors, (142), 138 states have call predecessors, (142), 142 states have call successors, (142) [2025-01-09 14:44:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 3753 transitions. [2025-01-09 14:44:31,550 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 3753 transitions. Word has length 423 [2025-01-09 14:44:31,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:31,551 INFO L471 AbstractCegarLoop]: Abstraction has 2249 states and 3753 transitions. [2025-01-09 14:44:31,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 2 states have call successors, (59), 1 states have call predecessors, (59), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2025-01-09 14:44:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 3753 transitions. [2025-01-09 14:44:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:31,559 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:31,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:31,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 14:44:31,560 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:31,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1432985791, now seen corresponding path program 1 times [2025-01-09 14:44:31,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:31,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75457600] [2025-01-09 14:44:31,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:31,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:31,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:31,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:31,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:32,255 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 14:44:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:32,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75457600] [2025-01-09 14:44:32,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75457600] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:32,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:32,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072157768] [2025-01-09 14:44:32,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:32,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:32,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:32,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:32,259 INFO L87 Difference]: Start difference. First operand 2249 states and 3753 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 14:44:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:32,521 INFO L93 Difference]: Finished difference Result 7381 states and 12245 transitions. [2025-01-09 14:44:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:44:32,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 423 [2025-01-09 14:44:32,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:32,541 INFO L225 Difference]: With dead ends: 7381 [2025-01-09 14:44:32,542 INFO L226 Difference]: Without dead ends: 5135 [2025-01-09 14:44:32,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 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 14:44:32,548 INFO L435 NwaCegarLoop]: 884 mSDtfsCounter, 584 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:32,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1594 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:44:32,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5135 states. [2025-01-09 14:44:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5135 to 4421. [2025-01-09 14:44:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4421 states, 4162 states have (on average 1.6535319557904853) internal successors, (6882), 4172 states have internal predecessors, (6882), 246 states have call successors, (246), 12 states have call predecessors, (246), 12 states have return successors, (246), 236 states have call predecessors, (246), 246 states have call successors, (246) [2025-01-09 14:44:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4421 states to 4421 states and 7374 transitions. [2025-01-09 14:44:32,706 INFO L78 Accepts]: Start accepts. Automaton has 4421 states and 7374 transitions. Word has length 423 [2025-01-09 14:44:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:32,707 INFO L471 AbstractCegarLoop]: Abstraction has 4421 states and 7374 transitions. [2025-01-09 14:44:32,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 14:44:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4421 states and 7374 transitions. [2025-01-09 14:44:32,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:32,716 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:32,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:32,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 14:44:32,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:32,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:32,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2130014079, now seen corresponding path program 1 times [2025-01-09 14:44:32,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:32,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163027760] [2025-01-09 14:44:32,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:32,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:32,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:33,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:33,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:33,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:33,500 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 14:44:33,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:33,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163027760] [2025-01-09 14:44:33,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163027760] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:33,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:33,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:33,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454003034] [2025-01-09 14:44:33,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:33,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:33,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:33,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:33,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:33,504 INFO L87 Difference]: Start difference. First operand 4421 states and 7374 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 14:44:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:33,867 INFO L93 Difference]: Finished difference Result 11062 states and 18309 transitions. [2025-01-09 14:44:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:44:33,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 423 [2025-01-09 14:44:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:33,898 INFO L225 Difference]: With dead ends: 11062 [2025-01-09 14:44:33,898 INFO L226 Difference]: Without dead ends: 6644 [2025-01-09 14:44:33,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:44:33,908 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 450 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:33,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1119 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:44:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6644 states. [2025-01-09 14:44:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6644 to 6633. [2025-01-09 14:44:34,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6633 states, 6308 states have (on average 1.634432466708941) internal successors, (10310), 6331 states have internal predecessors, (10310), 292 states have call successors, (292), 32 states have call predecessors, (292), 32 states have return successors, (292), 269 states have call predecessors, (292), 292 states have call successors, (292) [2025-01-09 14:44:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6633 states to 6633 states and 10894 transitions. [2025-01-09 14:44:34,130 INFO L78 Accepts]: Start accepts. Automaton has 6633 states and 10894 transitions. Word has length 423 [2025-01-09 14:44:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:34,131 INFO L471 AbstractCegarLoop]: Abstraction has 6633 states and 10894 transitions. [2025-01-09 14:44:34,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 14:44:34,131 INFO L276 IsEmpty]: Start isEmpty. Operand 6633 states and 10894 transitions. [2025-01-09 14:44:34,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2025-01-09 14:44:34,145 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:34,145 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:34,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 14:44:34,145 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:34,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:34,146 INFO L85 PathProgramCache]: Analyzing trace with hash 135869373, now seen corresponding path program 1 times [2025-01-09 14:44:34,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:34,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517865228] [2025-01-09 14:44:34,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:34,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:35,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:35,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:35,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 33 proven. 141 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:44:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:35,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517865228] [2025-01-09 14:44:35,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517865228] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:44:35,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436832953] [2025-01-09 14:44:35,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:35,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:44:35,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:44:35,495 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 14:44:35,497 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 14:44:35,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 423 statements into 1 equivalence classes. [2025-01-09 14:44:35,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 423 of 423 statements. [2025-01-09 14:44:35,778 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:35,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:35,784 INFO L256 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 14:44:35,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:44:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 2074 proven. 30 refuted. 0 times theorem prover too weak. 4740 trivial. 0 not checked. [2025-01-09 14:44:35,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:44:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 144 proven. 30 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2025-01-09 14:44:36,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436832953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:44:36,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:44:36,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-09 14:44:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726626363] [2025-01-09 14:44:36,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:44:36,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 14:44:36,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:36,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 14:44:36,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2025-01-09 14:44:36,213 INFO L87 Difference]: Start difference. First operand 6633 states and 10894 transitions. Second operand has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2025-01-09 14:44:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:36,702 INFO L93 Difference]: Finished difference Result 8115 states and 13266 transitions. [2025-01-09 14:44:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 14:44:36,703 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 423 [2025-01-09 14:44:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:36,710 INFO L225 Difference]: With dead ends: 8115 [2025-01-09 14:44:36,711 INFO L226 Difference]: Without dead ends: 1495 [2025-01-09 14:44:36,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 843 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2025-01-09 14:44:36,720 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 563 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:36,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 932 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 14:44:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2025-01-09 14:44:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1348. [2025-01-09 14:44:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 1218 states have (on average 1.5927750410509032) internal successors, (1940), 1222 states have internal predecessors, (1940), 117 states have call successors, (117), 12 states have call predecessors, (117), 12 states have return successors, (117), 113 states have call predecessors, (117), 117 states have call successors, (117) [2025-01-09 14:44:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2174 transitions. [2025-01-09 14:44:36,773 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2174 transitions. Word has length 423 [2025-01-09 14:44:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:36,774 INFO L471 AbstractCegarLoop]: Abstraction has 1348 states and 2174 transitions. [2025-01-09 14:44:36,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.0) internal successors, (192), 8 states have internal predecessors, (192), 3 states have call successors, (116), 2 states have call predecessors, (116), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2025-01-09 14:44:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2174 transitions. [2025-01-09 14:44:36,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:44:36,779 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:36,779 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:36,789 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 14:44:36,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:44:36,980 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:36,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash 549307281, now seen corresponding path program 1 times [2025-01-09 14:44:36,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100168618] [2025-01-09 14:44:36,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:37,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:37,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:37,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:37,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:37,741 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 14:44:37,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:37,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100168618] [2025-01-09 14:44:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100168618] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:37,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:37,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374957005] [2025-01-09 14:44:37,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:37,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:37,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:37,743 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:37,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:37,747 INFO L87 Difference]: Start difference. First operand 1348 states and 2174 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:38,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:38,043 INFO L93 Difference]: Finished difference Result 5058 states and 8179 transitions. [2025-01-09 14:44:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:44:38,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 424 [2025-01-09 14:44:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:38,057 INFO L225 Difference]: With dead ends: 5058 [2025-01-09 14:44:38,058 INFO L226 Difference]: Without dead ends: 3733 [2025-01-09 14:44:38,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:44:38,063 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 782 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:38,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1130 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:44:38,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2025-01-09 14:44:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 2563. [2025-01-09 14:44:38,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2563 states, 2383 states have (on average 1.6059588753671843) internal successors, (3827), 2391 states have internal predecessors, (3827), 157 states have call successors, (157), 22 states have call predecessors, (157), 22 states have return successors, (157), 149 states have call predecessors, (157), 157 states have call successors, (157) [2025-01-09 14:44:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2563 states to 2563 states and 4141 transitions. [2025-01-09 14:44:38,174 INFO L78 Accepts]: Start accepts. Automaton has 2563 states and 4141 transitions. Word has length 424 [2025-01-09 14:44:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:38,175 INFO L471 AbstractCegarLoop]: Abstraction has 2563 states and 4141 transitions. [2025-01-09 14:44:38,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2563 states and 4141 transitions. [2025-01-09 14:44:38,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:44:38,182 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:38,182 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:38,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 14:44:38,182 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:38,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1136872557, now seen corresponding path program 1 times [2025-01-09 14:44:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816760832] [2025-01-09 14:44:38,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:38,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:38,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:38,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:38,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:38,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:38,679 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 14:44:38,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:38,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816760832] [2025-01-09 14:44:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816760832] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285691261] [2025-01-09 14:44:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:38,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:38,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:38,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:38,681 INFO L87 Difference]: Start difference. First operand 2563 states and 4141 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:38,962 INFO L93 Difference]: Finished difference Result 11747 states and 18961 transitions. [2025-01-09 14:44:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 14:44:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 424 [2025-01-09 14:44:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:39,004 INFO L225 Difference]: With dead ends: 11747 [2025-01-09 14:44:39,004 INFO L226 Difference]: Without dead ends: 9207 [2025-01-09 14:44:39,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:44:39,013 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 1047 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:39,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2133 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 14:44:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9207 states. [2025-01-09 14:44:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9207 to 5391. [2025-01-09 14:44:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5391 states, 5043 states have (on average 1.6032123735871504) internal successors, (8085), 5058 states have internal predecessors, (8085), 304 states have call successors, (304), 43 states have call predecessors, (304), 43 states have return successors, (304), 289 states have call predecessors, (304), 304 states have call successors, (304) [2025-01-09 14:44:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5391 states to 5391 states and 8693 transitions. [2025-01-09 14:44:39,207 INFO L78 Accepts]: Start accepts. Automaton has 5391 states and 8693 transitions. Word has length 424 [2025-01-09 14:44:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:39,207 INFO L471 AbstractCegarLoop]: Abstraction has 5391 states and 8693 transitions. [2025-01-09 14:44:39,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 5391 states and 8693 transitions. [2025-01-09 14:44:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:44:39,215 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:39,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:39,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 14:44:39,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:39,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash -365752237, now seen corresponding path program 1 times [2025-01-09 14:44:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728264806] [2025-01-09 14:44:39,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:39,244 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:39,363 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:39,363 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:39,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:39,682 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 14:44:39,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:39,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728264806] [2025-01-09 14:44:39,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728264806] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:39,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:39,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 14:44:39,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732741513] [2025-01-09 14:44:39,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:39,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 14:44:39,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:39,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 14:44:39,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:44:39,684 INFO L87 Difference]: Start difference. First operand 5391 states and 8693 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 14:44:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:40,029 INFO L93 Difference]: Finished difference Result 16047 states and 25835 transitions. [2025-01-09 14:44:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 14:44:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 424 [2025-01-09 14:44:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:40,052 INFO L225 Difference]: With dead ends: 16047 [2025-01-09 14:44:40,052 INFO L226 Difference]: Without dead ends: 10679 [2025-01-09 14:44:40,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-01-09 14:44:40,063 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 663 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:40,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 2201 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 14:44:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10679 states. [2025-01-09 14:44:40,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10679 to 10677. [2025-01-09 14:44:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10677 states, 9989 states have (on average 1.585043547902693) internal successors, (15833), 10018 states have internal predecessors, (15833), 598 states have call successors, (598), 89 states have call predecessors, (598), 89 states have return successors, (598), 569 states have call predecessors, (598), 598 states have call successors, (598) [2025-01-09 14:44:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10677 states to 10677 states and 17029 transitions. [2025-01-09 14:44:40,337 INFO L78 Accepts]: Start accepts. Automaton has 10677 states and 17029 transitions. Word has length 424 [2025-01-09 14:44:40,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:40,338 INFO L471 AbstractCegarLoop]: Abstraction has 10677 states and 17029 transitions. [2025-01-09 14:44:40,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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 14:44:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 10677 states and 17029 transitions. [2025-01-09 14:44:40,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:44:40,348 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:40,348 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:40,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 14:44:40,348 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:40,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:40,349 INFO L85 PathProgramCache]: Analyzing trace with hash -225203627, now seen corresponding path program 1 times [2025-01-09 14:44:40,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:40,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636082479] [2025-01-09 14:44:40,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:40,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:40,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:40,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:40,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:40,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:40,780 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 14:44:40,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:40,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636082479] [2025-01-09 14:44:40,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636082479] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 14:44:40,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 14:44:40,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 14:44:40,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916553835] [2025-01-09 14:44:40,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 14:44:40,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 14:44:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:40,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 14:44:40,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 14:44:40,783 INFO L87 Difference]: Start difference. First operand 10677 states and 17029 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:44:41,058 INFO L93 Difference]: Finished difference Result 24725 states and 39315 transitions. [2025-01-09 14:44:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 14:44:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 424 [2025-01-09 14:44:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:44:41,088 INFO L225 Difference]: With dead ends: 24725 [2025-01-09 14:44:41,088 INFO L226 Difference]: Without dead ends: 14071 [2025-01-09 14:44:41,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 14:44:41,108 INFO L435 NwaCegarLoop]: 531 mSDtfsCounter, 213 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:44:41,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1474 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 14:44:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2025-01-09 14:44:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 12405. [2025-01-09 14:44:41,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12405 states, 11717 states have (on average 1.5957156268669455) internal successors, (18697), 11746 states have internal predecessors, (18697), 598 states have call successors, (598), 89 states have call predecessors, (598), 89 states have return successors, (598), 569 states have call predecessors, (598), 598 states have call successors, (598) [2025-01-09 14:44:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12405 states to 12405 states and 19893 transitions. [2025-01-09 14:44:41,585 INFO L78 Accepts]: Start accepts. Automaton has 12405 states and 19893 transitions. Word has length 424 [2025-01-09 14:44:41,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:44:41,586 INFO L471 AbstractCegarLoop]: Abstraction has 12405 states and 19893 transitions. [2025-01-09 14:44:41,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 14:44:41,586 INFO L276 IsEmpty]: Start isEmpty. Operand 12405 states and 19893 transitions. [2025-01-09 14:44:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:44:41,601 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:44:41,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:44:41,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 14:44:41,602 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:44:41,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:44:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash -277494763, now seen corresponding path program 1 times [2025-01-09 14:44:41,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:44:41,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984116030] [2025-01-09 14:44:41,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:41,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:44:41,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:42,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:42,328 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:42,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:45,420 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 14:44:45,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:44:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984116030] [2025-01-09 14:44:45,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984116030] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:44:45,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474278388] [2025-01-09 14:44:45,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:44:45,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:44:45,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:44:45,423 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 14:44:45,427 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 14:44:45,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:44:45,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:44:45,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:44:45,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:44:45,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 14:44:45,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:44:46,998 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 14:44:46,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:44:47,564 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 14:44:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474278388] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 14:44:47,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 14:44:47,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 9] total 26 [2025-01-09 14:44:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181442255] [2025-01-09 14:44:47,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 14:44:47,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 14:44:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:44:47,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 14:44:47,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2025-01-09 14:44:47,567 INFO L87 Difference]: Start difference. First operand 12405 states and 19893 transitions. Second operand has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 7 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (175), 7 states have call predecessors, (175), 7 states have call successors, (175) [2025-01-09 14:45:07,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:45:07,422 INFO L93 Difference]: Finished difference Result 395439 states and 633550 transitions. [2025-01-09 14:45:07,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 237 states. [2025-01-09 14:45:07,422 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 7 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (175), 7 states have call predecessors, (175), 7 states have call successors, (175) Word has length 424 [2025-01-09 14:45:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:45:08,180 INFO L225 Difference]: With dead ends: 395439 [2025-01-09 14:45:08,181 INFO L226 Difference]: Without dead ends: 383057 [2025-01-09 14:45:08,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 882 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27078 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8074, Invalid=54676, Unknown=0, NotChecked=0, Total=62750 [2025-01-09 14:45:08,283 INFO L435 NwaCegarLoop]: 870 mSDtfsCounter, 19007 mSDsluCounter, 10947 mSDsCounter, 0 mSdLazyCounter, 6591 mSolverCounterSat, 2941 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19013 SdHoareTripleChecker+Valid, 11817 SdHoareTripleChecker+Invalid, 9532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2941 IncrementalHoareTripleChecker+Valid, 6591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2025-01-09 14:45:08,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19013 Valid, 11817 Invalid, 9532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2941 Valid, 6591 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2025-01-09 14:45:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383057 states. [2025-01-09 14:45:12,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383057 to 122933. [2025-01-09 14:45:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122933 states, 117606 states have (on average 1.6123497100488071) internal successors, (189622), 117767 states have internal predecessors, (189622), 4330 states have call successors, (4330), 996 states have call predecessors, (4330), 996 states have return successors, (4330), 4169 states have call predecessors, (4330), 4330 states have call successors, (4330) [2025-01-09 14:45:13,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122933 states to 122933 states and 198282 transitions. [2025-01-09 14:45:13,078 INFO L78 Accepts]: Start accepts. Automaton has 122933 states and 198282 transitions. Word has length 424 [2025-01-09 14:45:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:45:13,079 INFO L471 AbstractCegarLoop]: Abstraction has 122933 states and 198282 transitions. [2025-01-09 14:45:13,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 13.153846153846153) internal successors, (342), 25 states have internal predecessors, (342), 7 states have call successors, (174), 3 states have call predecessors, (174), 5 states have return successors, (175), 7 states have call predecessors, (175), 7 states have call successors, (175) [2025-01-09 14:45:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 122933 states and 198282 transitions. [2025-01-09 14:45:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:45:13,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:45:13,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:13,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 14:45:13,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:45:13,698 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:45:13,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:45:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash -353238767, now seen corresponding path program 1 times [2025-01-09 14:45:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:45:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844949502] [2025-01-09 14:45:13,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:45:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:45:13,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:45:15,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:45:15,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:45:15,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:45:16,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 30 proven. 474 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2025-01-09 14:45:16,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:45:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844949502] [2025-01-09 14:45:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844949502] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:45:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366697138] [2025-01-09 14:45:16,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:45:16,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:45:16,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:45:16,417 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 14:45:16,419 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 14:45:16,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:45:16,726 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:45:16,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:45:16,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:45:16,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 14:45:16,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:45:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 1436 proven. 474 refuted. 0 times theorem prover too weak. 4934 trivial. 0 not checked. [2025-01-09 14:45:18,746 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:45:19,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366697138] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:45:19,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 14:45:19,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 19 [2025-01-09 14:45:19,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339102246] [2025-01-09 14:45:19,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 14:45:19,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 14:45:19,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:45:19,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 14:45:19,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2025-01-09 14:45:19,580 INFO L87 Difference]: Start difference. First operand 122933 states and 198282 transitions. Second operand has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 6 states have call successors, (117), 4 states have call predecessors, (117), 7 states have return successors, (117), 5 states have call predecessors, (117), 6 states have call successors, (117) [2025-01-09 14:45:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 14:45:25,462 INFO L93 Difference]: Finished difference Result 404651 states and 652274 transitions. [2025-01-09 14:45:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 14:45:25,463 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 6 states have call successors, (117), 4 states have call predecessors, (117), 7 states have return successors, (117), 5 states have call predecessors, (117), 6 states have call successors, (117) Word has length 424 [2025-01-09 14:45:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 14:45:26,227 INFO L225 Difference]: With dead ends: 404651 [2025-01-09 14:45:26,228 INFO L226 Difference]: Without dead ends: 281753 [2025-01-09 14:45:26,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=308, Invalid=1414, Unknown=0, NotChecked=0, Total=1722 [2025-01-09 14:45:26,321 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 2971 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 2132 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 14:45:26,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2973 Valid, 2494 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2132 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 14:45:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281753 states. [2025-01-09 14:45:31,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281753 to 169181. [2025-01-09 14:45:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169181 states, 163548 states have (on average 1.629637782180155) internal successors, (266524), 163708 states have internal predecessors, (266524), 4320 states have call successors, (4320), 1312 states have call predecessors, (4320), 1312 states have return successors, (4320), 4160 states have call predecessors, (4320), 4320 states have call successors, (4320) [2025-01-09 14:45:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169181 states to 169181 states and 275164 transitions. [2025-01-09 14:45:32,222 INFO L78 Accepts]: Start accepts. Automaton has 169181 states and 275164 transitions. Word has length 424 [2025-01-09 14:45:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 14:45:32,223 INFO L471 AbstractCegarLoop]: Abstraction has 169181 states and 275164 transitions. [2025-01-09 14:45:32,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 6 states have call successors, (117), 4 states have call predecessors, (117), 7 states have return successors, (117), 5 states have call predecessors, (117), 6 states have call successors, (117) [2025-01-09 14:45:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 169181 states and 275164 transitions. [2025-01-09 14:45:32,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2025-01-09 14:45:32,291 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 14:45:32,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:45:32,300 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 14:45:32,492 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,SelfDestructingSolverStorable13 [2025-01-09 14:45:32,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 14:45:32,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 14:45:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1108403622, now seen corresponding path program 1 times [2025-01-09 14:45:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 14:45:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543435808] [2025-01-09 14:45:32,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:45:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 14:45:32,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:45:33,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:45:33,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:45:33,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 14:45:33,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473254693] [2025-01-09 14:45:33,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 14:45:33,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 14:45:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 14:45:33,488 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 14:45:33,492 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 14:45:33,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 424 statements into 1 equivalence classes. [2025-01-09 14:45:33,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 424 of 424 statements. [2025-01-09 14:45:33,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 14:45:33,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 14:45:33,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 14:45:33,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 14:45:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6844 backedges. 1620 proven. 819 refuted. 0 times theorem prover too weak. 4405 trivial. 0 not checked. [2025-01-09 14:45:36,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 14:45:37,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 14:45:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543435808] [2025-01-09 14:45:37,161 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 14:45:37,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473254693] [2025-01-09 14:45:37,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473254693] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 14:45:37,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 14:45:37,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2025-01-09 14:45:37,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684467656] [2025-01-09 14:45:37,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 14:45:37,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 14:45:37,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 14:45:37,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 14:45:37,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2025-01-09 14:45:37,164 INFO L87 Difference]: Start difference. First operand 169181 states and 275164 transitions. Second operand has 20 states, 20 states have (on average 7.8) internal successors, (156), 17 states have internal predecessors, (156), 6 states have call successors, (59), 6 states have call predecessors, (59), 9 states have return successors, (59), 6 states have call predecessors, (59), 6 states have call successors, (59)